Merge branch 'siri/sasl/check_process_code/OTP-9395' into dev

* siri/sasl/check_process_code/OTP-9395:
  Add option purge to release_handler:check_install_release
  Improve performance of upgrade when many processes have old code

35 files changed, 722 insertions, 53 deletions

diff --git a/lib/sasl/doc/src/release_handler.xml b/lib/sasl/doc/src/release_handler.xml
index 4a973bc5ed..5ac0dc1acc 100644
--- a/lib/sasl/doc/src/release_handler.xml
+++ b/lib/sasl/doc/src/release_handler.xml
@@ -4,7 +4,7 @@
 <erlref>
   <header>
     <copyright>
-      <year>1996</year><year>2009</year>
+      <year>1996</year><year>2011</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -159,9 +159,12 @@ old        reboot_old            permanent
   <funcs>
     <func>
       <name>check_install_release(Vsn) -> {ok, OtherVsn, Descr} | {error, Reason}</name>
+      <name>check_install_release(Vsn,Opts) -> {ok, OtherVsn, Descr} | {error, Reason}</name>
       <fsummary>Check installation of a release in the system.</fsummary>
       <type>
         <v>Vsn = OtherVsn = string()</v>
+	<v>Opts = [Opt]</v>
+	<v>Opt = purge</v>
         <v>Descr = term()</v>
         <v>Reason = term()</v>
       </type>
@@ -179,6 +182,11 @@ old        reboot_old            permanent
           upgrade script.</p>
         <p>Returns the same as <c>install_release/1</c>. <c>Descr</c>
           defaults to "" if no <c>relup</c> file is found.</p>
+	<p>If the option <c>purge</c> is given, all old code that can
+          be soft purged will be purged after all other checks are
+          successfully completed. This can be useful in order to
+          reduce the time needed by <seealso
+          marker="#install_release/1">install_release</seealso>.</p>
       </desc>
     </func>
     <func>
@@ -299,6 +307,24 @@ release_handler:set_unpacked(RelFile, [{myapp,"1.0","/home/user"},...]).
           <c>{update_paths,true}</c>, afterwards
           <c>code:lib_dir(myapp)</c> will return
           <c>/home/user/myapp-1.0</c>.</p>
+	<note>
+	  <p>Installing a new release might be quite time consuming if
+	  there are many processes in the system. The reason is that
+	  each process must be checked for references to old code
+	  before a module can be purged. This check might lead to
+	  garbage collections and copying of data.</p>
+	  <p>If you wish to speed up the execution of
+	  <c>install_release</c>, then you may call <seealso
+	  marker="#check_install_release/1">check_install_release</seealso>
+	  first, using the option <c>purge</c>. This will do the same
+	  check for old code, and then purge all modules that can be
+	  soft purged. The purged modules will then no longer have any
+	  old code, and <c>install_release</c> will not need to do the
+	  checks.</p>
+	  <p>Obviously, this will not reduce the overall time for the
+	  upgrade, but it will allow checks and purge to be executed
+	  in the background before the real upgrade is started.</p>
+	</note>
       </desc>
     </func>
     <func>
diff --git a/lib/sasl/src/release_handler.erl b/lib/sasl/src/release_handler.erl
index ab54b1d00b..4f01f5f559 100644
--- a/lib/sasl/src/release_handler.erl
+++ b/lib/sasl/src/release_handler.erl
@@ -25,8 +25,8 @@
 -export([start_link/0,
 	 create_RELEASES/1, create_RELEASES/2, create_RELEASES/4,
 	 unpack_release/1,
-	 check_install_release/1, install_release/1, install_release/2,
-	 remove_release/1, 
+	 check_install_release/1, check_install_release/2,
+	 install_release/1, install_release/2, remove_release/1,
 	 which_releases/0, make_permanent/1, reboot_old_release/1,
 	 set_unpacked/2, set_removed/1, install_file/2]).
 -export([upgrade_app/2, downgrade_app/2, downgrade_app/3,
@@ -149,15 +149,35 @@ unpack_release(ReleaseName) ->
 %%-----------------------------------------------------------------
 %% Purpose: Checks the relup script for the specified version.
 %%          The release must be unpacked.
+%%          Options = [purge] - all old code that can be soft purged
+%%          will be purged if all checks succeeds. This can be usefull
+%%          in order to reduce time needed in the following call to
+%%          install_release.
 %% Returns: {ok, FromVsn, Descr} | {error, Reason}
-%%          Reason = {already_installed, Vsn} |
+%%          Reason = {illegal_option, IllegalOpt} |
+%%                   {already_installed, Vsn} |
 %%                   {bad_relup_file, RelFile} |
 %%                   {no_such_release, Vsn} |
 %%                   {no_such_from_vsn, Vsn} |
 %%                   exit_reason()
 %%-----------------------------------------------------------------
 check_install_release(Vsn) ->
-    call({check_install_release, Vsn}).
+    check_install_release(Vsn, []).
+
+check_install_release(Vsn, Opts) ->
+    case check_check_install_options(Opts, false) of
+	{ok,Purge} ->
+	    call({check_install_release, Vsn, Purge});
+	Error ->
+	    Error
+    end.
+
+check_check_install_options([purge|Opts], _) ->
+    check_check_install_options(Opts, true);
+check_check_install_options([Illegal|_],Purge) ->
+    {error,{illegal_option,Illegal}};
+check_check_install_options([],Purge) ->
+    {ok,Purge}.
 
 
 %%-----------------------------------------------------------------
@@ -541,11 +561,12 @@ handle_call({unpack_release, ReleaseName}, _From, S)
 handle_call({unpack_release, _ReleaseName}, _From, S) ->
     {reply, {error, client_node}, S};
 
-handle_call({check_install_release, Vsn}, _From, S) ->
+handle_call({check_install_release, Vsn, Purge}, _From, S) ->
     case catch do_check_install_release(S#state.rel_dir,
 					Vsn,
 					S#state.releases,
-					S#state.masters) of
+					S#state.masters,
+					Purge) of
 	{ok, CurrentVsn, Descr} -> 
 	    {reply, {ok, CurrentVsn, Descr}, S};
 	{error, Reason}   ->
@@ -855,7 +876,7 @@ check_path_response(Path, {ok, _Info}) ->
 check_path_response(Path, {error, _Reason}) ->
 	throw({error, {no_such_directory, Path}}).
 
-do_check_install_release(RelDir, Vsn, Releases, Masters) ->
+do_check_install_release(RelDir, Vsn, Releases, Masters, Purge) ->
     case lists:keysearch(Vsn, #release.vsn, Releases) of
 	{value, #release{status = current}} ->
 	    {error, {already_installed, Vsn}};
@@ -880,7 +901,20 @@ do_check_install_release(RelDir, Vsn, Releases, Masters) ->
 		    case get_rh_script(LatestRelease, Release, RelDir, Masters) of
 			{ok, {CurrentVsn, Descr, Script}} ->
 			    case catch check_script(Script, Libs) of
-				ok ->
+				{ok,SoftPurgeMods} when Purge=:=true ->
+				    %% Get modules with brutal_purge
+				    %% instructions, but that can be
+				    %% soft purged
+				    {ok,BrutalPurgeMods} =
+					release_handler_1:check_old_processes(
+					  Script,brutal_purge),
+				    lists:foreach(
+				      fun(Mod) ->
+					      catch erlang:purge_module(Mod)
+				      end,
+				      SoftPurgeMods ++ BrutalPurgeMods),
+				    {ok, CurrentVsn, Descr};
+				{ok,_} ->
 				    {ok, CurrentVsn, Descr};
 				Else ->
 				    Else
diff --git a/lib/sasl/src/release_handler_1.erl b/lib/sasl/src/release_handler_1.erl
index ff62f847ac..ef95606bb5 100644
--- a/lib/sasl/src/release_handler_1.erl
+++ b/lib/sasl/src/release_handler_1.erl
@@ -19,7 +19,8 @@
 -module(release_handler_1).
 
 %% External exports
--export([eval_script/1, eval_script/5, check_script/2]).
+-export([eval_script/1, eval_script/5,
+	 check_script/2, check_old_processes/2]).
 -export([get_current_vsn/1]). %% exported because used in a test case
 
 -record(eval_state, {bins = [], stopped = [], suspended = [], apps = [],
@@ -47,17 +48,20 @@
 %%% This is a low-level release handler.
 %%%-----------------------------------------------------------------
 check_script(Script, LibDirs) ->
-    case catch check_old_processes(Script) of
-	ok ->
+    case catch check_old_processes(Script,soft_purge) of
+	{ok, PurgeMods} ->
 	    {Before, _After} = split_instructions(Script),
 	    case catch lists:foldl(fun(Instruction, EvalState1) ->
 					   eval(Instruction, EvalState1)
 				   end,
 				   #eval_state{libdirs = LibDirs},
 				   Before) of
-		EvalState2 when is_record(EvalState2, eval_state) -> ok;
-		{error, Error} -> {error, Error};
-		Other -> {error, Other}
+		EvalState2 when is_record(EvalState2, eval_state) ->
+		    {ok,PurgeMods};
+		{error, Error} ->
+		    {error, Error};
+		Other ->
+		    {error, Other}
 	    end;
 	{error, Mod} ->
 	    {error, {old_processes, Mod}}
@@ -68,8 +72,8 @@ eval_script(Script) ->
     eval_script(Script, [], [], [], []).
 
 eval_script(Script, Apps, LibDirs, NewLibs, Opts) ->
-    case catch check_old_processes(Script) of
-	ok ->
+    case catch check_old_processes(Script,soft_purge) of
+	{ok,_} ->
 	    {Before, After} = split_instructions(Script),
 	    case catch lists:foldl(fun(Instruction, EvalState1) ->
 					   eval(Instruction, EvalState1)
@@ -112,32 +116,63 @@ split_instructions([], Before) ->
     {[], lists:reverse(Before)}.
 
 %%-----------------------------------------------------------------
-%% Func: check_old_processes/1
+%% Func: check_old_processes/2
 %% Args: Script = [instruction()]
+%%       PrePurgeMethod = soft_purge | brutal_purge
 %% Purpose: Check if there is any process that runs an old version
-%%          of a module that should be soft_purged, (i.e. not purged
-%%          at all if there is any such process).  Returns {error, Mod}
-%%          if so, ok otherwise.
-%% Returns: ok | {error, Mod}
+%%          of a module that should be purged according to PrePurgeMethod.
+%%          Returns a list of modules that can be soft_purged.
+%%
+%%          If PrePurgeMethod == soft_purge, the function will succeed
+%%          only if there is no process running old code of any of the
+%%          modules. Else it will throw {error,Mod}, where Mod is the
+%%          first module found that can not be soft_purged.
+%%
+%%          If PrePurgeMethod == brutal_purge, the function will
+%%          always succeed and return a list of all modules that are
+%%          specified in the script with PrePurgeMethod brutal_purge,
+%%          but that can be soft_purged.
+%%
+%% Returns: {ok,PurgeMods} | {error, Mod}
+%%          PurgeMods = [Mod]
 %%          Mod = atom()  
 %%-----------------------------------------------------------------
-check_old_processes(Script) ->
-    lists:foreach(fun({load, {Mod, soft_purge, _PostPurgeMethod}}) ->
-			  check_old_code(Mod);
-		     ({remove, {Mod, soft_purge, _PostPurgeMethod}}) ->
-			  check_old_code(Mod);
-		     (_) -> ok
-		  end,
-		  Script).
+check_old_processes(Script,PrePurgeMethod) ->
+    Procs = erlang:processes(),
+    {ok,lists:flatmap(
+	  fun({load, {Mod, PPM, _PostPurgeMethod}}) when PPM==PrePurgeMethod ->
+		  check_old_code(Mod,Procs,PrePurgeMethod);
+	     ({remove, {Mod, PPM, _PostPurgeMethod}}) when PPM==PrePurgeMethod ->
+		  check_old_code(Mod,Procs,PrePurgeMethod);
+	     (_) -> []
+	  end,
+	  Script)}.
+
+check_old_code(Mod,Procs,PrePurgeMethod) ->
+    case erlang:check_old_code(Mod) of
+	true when PrePurgeMethod==soft_purge ->
+	    do_check_old_code(Mod,Procs);
+	true when PrePurgeMethod==brutal_purge ->
+	    case catch do_check_old_code(Mod,Procs) of
+		{error,Mod} -> [];
+		R -> R
+	    end;
+	false ->
+	    []
+    end.
+
+
+do_check_old_code(Mod,Procs) ->
+    lists:foreach(
+      fun(Pid) ->
+	      case erlang:check_process_code(Pid, Mod) of
+		  false -> ok;
+		  true -> throw({error, Mod})
+	      end
+      end,
+      Procs),
+    [Mod].
 
-check_old_code(Mod) ->
-    lists:foreach(fun(Pid) ->
-			  case erlang:check_process_code(Pid, Mod) of
-			      false -> ok;
-			      true -> throw({error, Mod})
-			  end
-		  end,
-		  erlang:processes()).
 
 %%-----------------------------------------------------------------
 %% An unpurged module is a module for which there exist an old
diff --git a/lib/sasl/test/release_handler_SUITE.erl b/lib/sasl/test/release_handler_SUITE.erl
index 9c7733b7ec..b44da72d35 100644
--- a/lib/sasl/test/release_handler_SUITE.erl
+++ b/lib/sasl/test/release_handler_SUITE.erl
@@ -55,7 +55,10 @@ win32_cases() ->
 
 %% Cases that can be run on all platforms
 cases() ->
-    [otp_2740, otp_2760, otp_5761, otp_9402, otp_9417, instructions, eval_appup].
+    [otp_2740, otp_2760, otp_5761, otp_9402, otp_9417,
+     otp_9395_check_old_code, otp_9395_check_and_purge,
+     otp_9395_update_many_mods, otp_9395_rm_many_mods,
+     instructions, eval_appup].
 
 groups() ->
     [{release,[],
@@ -556,7 +559,7 @@ otp_2760(Conf) ->
     LibDir = filename:join([DataDir,app1_app2,lib1]),
 
     Rel1 = create_and_install_fake_first_release(Dir,[{app1,"1.0",LibDir}]),
-    Rel2 = create_fake_upgrade_release(Dir,"after",[],{Rel1,Rel1,[LibDir]}),
+    Rel2 = create_fake_upgrade_release(Dir,"after",[],{[Rel1],[Rel1],[LibDir]}),
     Rel2Dir = filename:dirname(Rel2),
 
     %% Start a node with Rel1.boot and check that the app1 module is loaded
@@ -569,9 +572,12 @@ otp_2760(Conf) ->
     {ok, []} = rpc:call(Node, release_handler_1, eval_script, [Script]),
     false = rpc:call(Node, code, is_loaded, [app1]),
 
-    true = stop_node(Node),
     ok.
 
+otp_2760(cleanup,_Conf) ->
+    stop_node(node_name(otp_2760)).
+
+
 %% Test upgrade using other filesystem than the defined in OTP and
 %% option {update_paths, true}
 otp_5761(Conf) when is_list(Conf) ->
@@ -597,7 +603,7 @@ otp_5761(Conf) when is_list(Conf) ->
 				       "2",
 				       [{app1,"2.0",LibDir2},
 					{app2,"1.0",LibDir2}],
-				       {Rel1,Rel1,[LibDir1]}),
+				       {[Rel1],[Rel1],[LibDir1]}),
     Rel1Dir = filename:dirname(Rel1),
     Rel2Dir = filename:dirname(Rel2),
     
@@ -653,10 +659,11 @@ otp_5761(Conf) when is_list(Conf) ->
     App11Dir = rpc:call(Node, code, lib_dir, [app1]),
     App2aDir = rpc:call(Node, code, lib_dir, [app2]),
 
-    %% Stop the slave node
-    true = stop_node(Node),
     ok.
 
+otp_5761(cleanup,_Conf) ->
+    stop_node(node_name(otp_5761)).
+
 
 %% When a new version of an application is added, but no module is
 %% changed - the path was not updated - i.e. code:priv_dir would point
@@ -673,7 +680,7 @@ otp_9402(Conf) when is_list(Conf) ->
     Rel2 = create_fake_upgrade_release(Dir,
 				       "2",
 				       [{a,"1.2",LibDir}],
-				       {Rel1,Rel1,[LibDir]}),
+				       {[Rel1],[Rel1],[LibDir]}),
     Rel1Dir = filename:dirname(Rel1),
     Rel2Dir = filename:dirname(Rel2),
 
@@ -722,6 +729,9 @@ otp_9402(Conf) when is_list(Conf) ->
 
     ok.
 
+otp_9402(cleanup,_Conf) ->
+    stop_node(node_name(otp_9402)).
+
 
 %% When a module is deleted in an appup instruction, the upgrade
 %% failed if the module was not loaded.
@@ -737,7 +747,7 @@ otp_9417(Conf) when is_list(Conf) ->
     Rel2 = create_fake_upgrade_release(Dir,
 				       "2",
 				       [{b,"2.0",LibDir}],
-				       {Rel1,Rel1,[LibDir]}),
+				       {[Rel1],[Rel1],[LibDir]}),
     Rel1Dir = filename:dirname(Rel1),
     Rel2Dir = filename:dirname(Rel2),
 
@@ -777,6 +787,282 @@ otp_9417(Conf) when is_list(Conf) ->
     {file,BServerBeam} = rpc:call(Node,code,is_loaded,[b_server]),
     ok.
 
+otp_9417(cleanup,_Conf) ->
+    stop_node(node_name(otp_9417)).
+
+
+%% OTP-9395 - performance problems when there are MANY processes
+%% Test that the procedure of checking for old code before an upgrade
+%% can be started is "very much faster" when there is no old code in
+%% the system.
+otp_9395_check_old_code(Conf) when is_list(Conf) ->
+
+    NProcs = 1000,
+    MPath = filename:join([?config(data_dir,Conf),"lib","many_mods-1.0","ebin"]),
+    code:add_path(MPath),
+
+    %% Start NProc processes, each referencing each module
+    {Modules,Pids} = m:start(NProcs),
+
+    %% Load each module again in order to get old code
+    [code:load_file(Mod) || Mod <- Modules],
+    true = erlang:check_old_code(m10),
+
+    S = [point_of_no_return |
+	 [{remove,{M,soft_purge,soft_purge}} || M <- Modules]],
+
+    %% Do the old code check, then purge, and redo
+    {T1,{ok,PurgeMods}} = timer:tc(release_handler_1,check_script,[S,[]]),
+    true = (lists:sort(PurgeMods) == lists:sort(Modules)),
+    [code:purge(M) || M <- PurgeMods],
+    {T2,{ok,[]}} = timer:tc(release_handler_1,check_script,[S,[]]),
+
+    %% Cleanup
+    lists:foreach(fun(Pid) -> Pid ! stop end, Pids),
+    lists:foreach(fun(Mod) -> code:purge(Mod),
+			      code:delete(Mod),
+			      code:purge(Mod)
+		  end, Modules),
+    code:del_path(MPath),
+
+    %% Test that second run was much faster than the first
+    if T2 > 0 ->
+	    X = T1/T2,
+	    ct:log("~p procs, ~p mods -> ~n"
+		   "\tWith old code: ~.2f sec~n"
+		   "\tAfter purge: ~.2f sec~n"
+		   "\tT1/T2: ~.2f",
+		   [NProcs,length(Modules),T1/1000000,T2/1000000,X]),
+	    if X < 1000 ->
+		    ct:fail({not_enough_improvement_after_purge,round(X)});
+	       true ->
+		    ok
+	    end;
+       T1 > 0 -> %% Means T1/T2 = infinite
+	    ok;
+       true ->
+	    ct:fail({unexpected_values,T1,T2})
+    end,
+    ok.
+
+
+%% OTP-9395 - performance problems when there are MANY processes
+%% Added option 'purge' to check_install_release
+otp_9395_check_and_purge(Conf) when is_list(Conf) ->
+    %% Set some paths
+    PrivDir = priv_dir(Conf),
+    Dir = filename:join(PrivDir,"otp_9395_check_and_purge"),
+    LibDir = filename:join(?config(data_dir, Conf), "lib"),
+
+    %% Create the releases
+    Rel1 = create_and_install_fake_first_release(Dir,
+						 [{b,"1.0",LibDir}]),
+    Rel2 = create_fake_upgrade_release(Dir,
+				       "2",
+				       [{b,"2.0",LibDir}],
+				       {[Rel1],[Rel1],[LibDir]}),
+    Rel1Dir = filename:dirname(Rel1),
+    Rel2Dir = filename:dirname(Rel2),
+
+    %% Start a slave node
+    {ok, Node} = t_start_node(otp_9395_check_and_purge, Rel1,
+			      filename:join(Rel1Dir,"sys.config")),
+
+    %% Make sure there is old code for b_lib and b_server
+    rpc:call(Node,code,load_file,[b_lib]),
+    rpc:call(Node,code,load_file,[b_lib]),
+    rpc:call(Node,code,load_file,[b_server]),
+    rpc:call(Node,code,load_file,[b_server]),
+    true = rpc:call(Node,erlang,check_old_code,[b_lib]),
+    true = rpc:call(Node,erlang,check_old_code,[b_server]),
+
+    %% Unpack second release, which removes b_lib module and loads b_server
+    {ok, RelVsn2} =
+	rpc:call(Node, release_handler, set_unpacked,
+		 [Rel2++".rel", [{b,"2.0",LibDir}]]),
+    ok = rpc:call(Node, release_handler, install_file,
+		  [RelVsn2, filename:join(Rel2Dir, "relup")]),
+    ok = rpc:call(Node, release_handler, install_file,
+		  [RelVsn2, filename:join(Rel2Dir, "start.boot")]),
+    ok = rpc:call(Node, release_handler, install_file,
+		  [RelVsn2, filename:join(Rel2Dir, "sys.config")]),
+
+    %% Do check_install_release, and check that old code still exists
+    {ok, _RelVsn1, []} =
+	rpc:call(Node, release_handler, check_install_release, [RelVsn2]),
+    true = rpc:call(Node,erlang,check_old_code,[b_lib]),
+    true = rpc:call(Node,erlang,check_old_code,[b_server]),
+
+    %% Do check_install_release with option 'purge' and check that old
+    %% code is gone
+    {ok, _RelVsn1, []} =
+	rpc:call(Node, release_handler, check_install_release, [RelVsn2,[purge]]),
+    false = rpc:call(Node,erlang,check_old_code,[b_lib]),
+    false = rpc:call(Node,erlang,check_old_code,[b_server]),
+
+    ok.
+
+otp_9395_check_and_purge(cleanup,_Conf) ->
+    stop_node(node_name(otp_9395_check_and_purge)).
+
+
+%% OTP-9395 - performance problems when there are MANY processes
+%% Upgrade which updates many modules (brutal_purge)
+otp_9395_update_many_mods(Conf) when is_list(Conf) ->
+    %% Set some paths
+    PrivDir = priv_dir(Conf),
+    Dir = filename:join(PrivDir,"otp_9395_update_many_mods"),
+    LibDir = filename:join(?config(data_dir, Conf), "lib"),
+
+    %% Create the releases
+    Rel1 = create_and_install_fake_first_release(Dir,
+						 [{many_mods,"1.0",LibDir}]),
+    Rel2 = create_fake_upgrade_release(Dir,
+				       "2",
+				       [{many_mods,"1.1",LibDir}],
+				       {[Rel1],[Rel1],[LibDir]}),
+    Rel1Dir = filename:dirname(Rel1),
+    Rel2Dir = filename:dirname(Rel2),
+
+    %% Start a slave node
+    {ok, Node} = t_start_node(otp_9395_update_many_mods, Rel1,
+			      filename:join(Rel1Dir,"sys.config")),
+
+    %% Start a lot of processes on the new node, all with refs to each
+    %% module that will be updated
+    NProcs = 1000,
+    {Modules,Pids1} = rpc:call(Node,m,start,[NProcs]),
+
+    %% Then load modules in order to get old code
+    [rpc:call(Node,code,load_file,[Mod]) || Mod <- Modules],
+    true = rpc:call(Node,erlang,check_old_code,[m10]),
+
+    %% Unpack second release, which updates all mX modules
+    {ok, RelVsn2} =
+	rpc:call(Node, release_handler, set_unpacked,
+		 [Rel2++".rel", [{many_mods,"1.1",LibDir}]]),
+    ok = rpc:call(Node, release_handler, install_file,
+		  [RelVsn2, filename:join(Rel2Dir, "relup")]),
+    ok = rpc:call(Node, release_handler, install_file,
+		  [RelVsn2, filename:join(Rel2Dir, "start.boot")]),
+    ok = rpc:call(Node, release_handler, install_file,
+		  [RelVsn2, filename:join(Rel2Dir, "sys.config")]),
+
+    %% First, install release directly and check how much time it takes
+    {TInst0,{ok, _, []}} =
+	timer:tc(rpc,call,[Node, release_handler, install_release, [RelVsn2]]),
+    ct:log("install_release: ~.2f",[TInst0/1000000]),
+
+    %% Restore to old release, spawn processes again and load to get old code
+    {_,RelVsn1} = init:script_id(),
+    {_TInst1,{ok, _, []}} =
+	timer:tc(rpc,call,[Node, release_handler, install_release, [RelVsn1]]),
+%    ct:log("install_release: ~.2f",[_TInst1/1000000]),
+
+    [exit(Pid,kill) || Pid <- Pids1],
+    {Modules,_Pids2} = rpc:call(Node,m,start,[NProcs]),
+    [rpc:call(Node,code,load_file,[Mod]) || Mod <- Modules],
+    true = rpc:call(Node,erlang,check_old_code,[m10]),
+
+    %% Run check_install_release with purge before install this time
+    {TCheck,{ok, _RelVsn1, []}} =
+	timer:tc(rpc,call,[Node, release_handler, check_install_release,
+			   [RelVsn2,[purge]]]),
+    ct:log("check_install_release with purge: ~.2f",[TCheck/1000000]),
+
+    %% Finally install release after check and purge, and check that
+    %% this install was faster than the first.
+    {TInst2,{ok, _RelVsn1, []}} =
+	timer:tc(rpc,call,[Node, release_handler, install_release, [RelVsn2]]),
+    ct:log("install_release: ~.2f",[TInst2/1000000]),
+
+    true = (TInst2 < TInst0),
+
+    ok.
+
+otp_9395_update_many_mods(cleanup,_Conf) ->
+    stop_node(node_name(otp_9395_update_many_mods)).
+
+
+%% OTP-9395 - performance problems when there are MANY processes
+%% Upgrade which removes many modules (brutal_purge)
+otp_9395_rm_many_mods(Conf) when is_list(Conf) ->
+    %% Set some paths
+    PrivDir = priv_dir(Conf),
+    Dir = filename:join(PrivDir,"otp_9395_rm_many_mods"),
+    LibDir = filename:join(?config(data_dir, Conf), "lib"),
+
+    %% Create the releases
+    Rel1 = create_and_install_fake_first_release(Dir,
+						 [{many_mods,"1.0",LibDir}]),
+    Rel2 = create_fake_upgrade_release(Dir,
+				       "2",
+				       [{many_mods,"2.0",LibDir}],
+				       {[Rel1],[Rel1],[LibDir]}),
+    Rel1Dir = filename:dirname(Rel1),
+    Rel2Dir = filename:dirname(Rel2),
+
+    %% Start a slave node
+    {ok, Node} = t_start_node(otp_9395_rm_many_mods, Rel1,
+			      filename:join(Rel1Dir,"sys.config")),
+
+    %% Start a lot of processes on the new node, all with refs to each
+    %% module that will be updated
+    NProcs = 1000,
+    {Modules,Pids1} = rpc:call(Node,m,start,[NProcs]),
+
+    %% Then load modules in order to get old code
+    [rpc:call(Node,code,load_file,[Mod]) || Mod <- Modules],
+    true = rpc:call(Node,erlang,check_old_code,[m10]),
+
+    %% Unpack second release, which removes all mX modules
+    {ok, RelVsn2} =
+	rpc:call(Node, release_handler, set_unpacked,
+		 [Rel2++".rel", [{many_mods,"2.0",LibDir}]]),
+    ok = rpc:call(Node, release_handler, install_file,
+		  [RelVsn2, filename:join(Rel2Dir, "relup")]),
+    ok = rpc:call(Node, release_handler, install_file,
+		  [RelVsn2, filename:join(Rel2Dir, "start.boot")]),
+    ok = rpc:call(Node, release_handler, install_file,
+		  [RelVsn2, filename:join(Rel2Dir, "sys.config")]),
+
+    %% First, install release directly and check how much time it takes
+    {TInst0,{ok, _, []}} =
+	timer:tc(rpc,call,[Node, release_handler, install_release, [RelVsn2]]),
+    ct:log("install_release: ~.2f",[TInst0/1000000]),
+
+    %% Restore to old release, spawn processes again and load to get old code
+    {_,RelVsn1} = init:script_id(),
+    {_TInst1,{ok, _, []}} =
+	timer:tc(rpc,call,[Node, release_handler, install_release, [RelVsn1]]),
+%    ct:log("install_release: ~.2f",[_TInst1/1000000]),
+
+    [exit(Pid,kill) || Pid <- Pids1],
+    {Modules,_Pids2} = rpc:call(Node,m,start,[NProcs]),
+    [rpc:call(Node,code,load_file,[Mod]) || Mod <- Modules],
+    true = rpc:call(Node,erlang,check_old_code,[m10]),
+
+    %% Run check_install_release with purge before install this time
+    {TCheck,{ok, _RelVsn1, []}} =
+	timer:tc(rpc,call,[Node, release_handler, check_install_release,
+			   [RelVsn2,[purge]]]),
+    ct:log("check_install_release with purge: ~.2f",[TCheck/1000000]),
+
+    %% Finally install release after check and purge, and check that
+    %% this install was faster than the first.
+    {TInst2,{ok, _RelVsn1, []}} =
+	timer:tc(rpc,call,[Node, release_handler, install_release, [RelVsn2]]),
+    ct:log("install_release: ~.2f",[TInst2/1000000]),
+
+    true = (TInst2 =< TInst0),
+
+    ok.
+
+otp_9395_rm_many_mods(cleanup,_Conf) ->
+    stop_node(node_name(otp_9395_rm_many_mods)).
+
+
+
 %% Test upgrade and downgrade of applications
 eval_appup(Conf) when is_list(Conf) ->
 
@@ -1838,9 +2124,8 @@ create_fake_upgrade_release(Dir,RelVsn,AppDirs,{UpFrom,DownTo,ExtraLibs}) ->
 
     %% And a relup file so it can be upgraded to
     RelupPath = Paths ++ [filename:join([Lib,"*","ebin"]) || Lib <- ExtraLibs],
-    ok = systools:make_relup(Rel,[UpFrom],[DownTo],
-				   [{path,RelupPath},
-				    {outdir,RelDir}]),
+    ok = systools:make_relup(Rel,UpFrom,DownTo,[{path,RelupPath},
+						{outdir,RelDir}]),
     
     Rel.
 
diff --git a/lib/sasl/test/release_handler_SUITE_data/Makefile.src b/lib/sasl/test/release_handler_SUITE_data/Makefile.src
index a12e526d2e..9b07e7ce0a 100644
--- a/lib/sasl/test/release_handler_SUITE_data/Makefile.src
+++ b/lib/sasl/test/release_handler_SUITE_data/Makefile.src
@@ -13,7 +13,30 @@ LIB= \
      lib/a-1.0/ebin/a_sup.@EMULATOR@ \
      lib/b-1.0/ebin/b_server.@EMULATOR@ \
      lib/b-1.0/ebin/b_lib.@EMULATOR@ \
-     lib/b-2.0/ebin/b_server.@EMULATOR@
+     lib/b-2.0/ebin/b_server.@EMULATOR@ \
+     lib/many_mods-1.0/ebin/m.@EMULATOR@ \
+     lib/many_mods-1.0/ebin/m1.@EMULATOR@ \
+     lib/many_mods-1.0/ebin/m2.@EMULATOR@ \
+     lib/many_mods-1.0/ebin/m3.@EMULATOR@ \
+     lib/many_mods-1.0/ebin/m4.@EMULATOR@ \
+     lib/many_mods-1.0/ebin/m5.@EMULATOR@ \
+     lib/many_mods-1.0/ebin/m6.@EMULATOR@ \
+     lib/many_mods-1.0/ebin/m7.@EMULATOR@ \
+     lib/many_mods-1.0/ebin/m8.@EMULATOR@ \
+     lib/many_mods-1.0/ebin/m9.@EMULATOR@ \
+     lib/many_mods-1.0/ebin/m10.@EMULATOR@ \
+     lib/many_mods-1.1/ebin/m.@EMULATOR@ \
+     lib/many_mods-1.1/ebin/m1.@EMULATOR@ \
+     lib/many_mods-1.1/ebin/m2.@EMULATOR@ \
+     lib/many_mods-1.1/ebin/m3.@EMULATOR@ \
+     lib/many_mods-1.1/ebin/m4.@EMULATOR@ \
+     lib/many_mods-1.1/ebin/m5.@EMULATOR@ \
+     lib/many_mods-1.1/ebin/m6.@EMULATOR@ \
+     lib/many_mods-1.1/ebin/m7.@EMULATOR@ \
+     lib/many_mods-1.1/ebin/m8.@EMULATOR@ \
+     lib/many_mods-1.1/ebin/m9.@EMULATOR@ \
+     lib/many_mods-1.1/ebin/m10.@EMULATOR@ \
+     lib/many_mods-2.0/ebin/m.@EMULATOR@
 
 APP= \
      app1_app2/lib1/app1-1.0/ebin/app1_sup.@EMULATOR@ \
@@ -75,6 +98,52 @@ lib/b-1.0/ebin/b_lib.@EMULATOR@: lib/b-1.0/src/b_lib.erl
 lib/b-2.0/ebin/b_server.@EMULATOR@: lib/b-2.0/src/b_server.erl
 	erlc $(EFLAGS) -olib/b-2.0/ebin lib/b-2.0/src/b_server.erl
 
+lib/many_mods-1.0/ebin/m.@EMULATOR@: lib/many_mods-1.0/src/m.erl
+	erlc $(EFLAGS) -olib/many_mods-1.0/ebin lib/many_mods-1.0/src/m.erl
+lib/many_mods-1.0/ebin/m1.@EMULATOR@: lib/many_mods-1.0/src/m1.erl
+	erlc $(EFLAGS) -olib/many_mods-1.0/ebin lib/many_mods-1.0/src/m1.erl
+lib/many_mods-1.0/ebin/m2.@EMULATOR@: lib/many_mods-1.0/src/m2.erl
+	erlc $(EFLAGS) -olib/many_mods-1.0/ebin lib/many_mods-1.0/src/m2.erl
+lib/many_mods-1.0/ebin/m3.@EMULATOR@: lib/many_mods-1.0/src/m3.erl
+	erlc $(EFLAGS) -olib/many_mods-1.0/ebin lib/many_mods-1.0/src/m3.erl
+lib/many_mods-1.0/ebin/m4.@EMULATOR@: lib/many_mods-1.0/src/m4.erl
+	erlc $(EFLAGS) -olib/many_mods-1.0/ebin lib/many_mods-1.0/src/m4.erl
+lib/many_mods-1.0/ebin/m5.@EMULATOR@: lib/many_mods-1.0/src/m5.erl
+	erlc $(EFLAGS) -olib/many_mods-1.0/ebin lib/many_mods-1.0/src/m5.erl
+lib/many_mods-1.0/ebin/m6.@EMULATOR@: lib/many_mods-1.0/src/m6.erl
+	erlc $(EFLAGS) -olib/many_mods-1.0/ebin lib/many_mods-1.0/src/m6.erl
+lib/many_mods-1.0/ebin/m7.@EMULATOR@: lib/many_mods-1.0/src/m7.erl
+	erlc $(EFLAGS) -olib/many_mods-1.0/ebin lib/many_mods-1.0/src/m7.erl
+lib/many_mods-1.0/ebin/m8.@EMULATOR@: lib/many_mods-1.0/src/m8.erl
+	erlc $(EFLAGS) -olib/many_mods-1.0/ebin lib/many_mods-1.0/src/m8.erl
+lib/many_mods-1.0/ebin/m9.@EMULATOR@: lib/many_mods-1.0/src/m9.erl
+	erlc $(EFLAGS) -olib/many_mods-1.0/ebin lib/many_mods-1.0/src/m9.erl
+lib/many_mods-1.0/ebin/m10.@EMULATOR@: lib/many_mods-1.0/src/m10.erl
+	erlc $(EFLAGS) -olib/many_mods-1.0/ebin lib/many_mods-1.0/src/m10.erl
+lib/many_mods-1.1/ebin/m.@EMULATOR@: lib/many_mods-1.1/src/m.erl
+	erlc $(EFLAGS) -olib/many_mods-1.1/ebin lib/many_mods-1.1/src/m.erl
+lib/many_mods-1.1/ebin/m1.@EMULATOR@: lib/many_mods-1.1/src/m1.erl
+	erlc $(EFLAGS) -olib/many_mods-1.1/ebin lib/many_mods-1.1/src/m1.erl
+lib/many_mods-1.1/ebin/m2.@EMULATOR@: lib/many_mods-1.1/src/m2.erl
+	erlc $(EFLAGS) -olib/many_mods-1.1/ebin lib/many_mods-1.1/src/m2.erl
+lib/many_mods-1.1/ebin/m3.@EMULATOR@: lib/many_mods-1.1/src/m3.erl
+	erlc $(EFLAGS) -olib/many_mods-1.1/ebin lib/many_mods-1.1/src/m3.erl
+lib/many_mods-1.1/ebin/m4.@EMULATOR@: lib/many_mods-1.1/src/m4.erl
+	erlc $(EFLAGS) -olib/many_mods-1.1/ebin lib/many_mods-1.1/src/m4.erl
+lib/many_mods-1.1/ebin/m5.@EMULATOR@: lib/many_mods-1.1/src/m5.erl
+	erlc $(EFLAGS) -olib/many_mods-1.1/ebin lib/many_mods-1.1/src/m5.erl
+lib/many_mods-1.1/ebin/m6.@EMULATOR@: lib/many_mods-1.1/src/m6.erl
+	erlc $(EFLAGS) -olib/many_mods-1.1/ebin lib/many_mods-1.1/src/m6.erl
+lib/many_mods-1.1/ebin/m7.@EMULATOR@: lib/many_mods-1.1/src/m7.erl
+	erlc $(EFLAGS) -olib/many_mods-1.1/ebin lib/many_mods-1.1/src/m7.erl
+lib/many_mods-1.1/ebin/m8.@EMULATOR@: lib/many_mods-1.1/src/m8.erl
+	erlc $(EFLAGS) -olib/many_mods-1.1/ebin lib/many_mods-1.1/src/m8.erl
+lib/many_mods-1.1/ebin/m9.@EMULATOR@: lib/many_mods-1.1/src/m9.erl
+	erlc $(EFLAGS) -olib/many_mods-1.1/ebin lib/many_mods-1.1/src/m9.erl
+lib/many_mods-1.1/ebin/m10.@EMULATOR@: lib/many_mods-1.1/src/m10.erl
+	erlc $(EFLAGS) -olib/many_mods-1.1/ebin lib/many_mods-1.1/src/m10.erl
+lib/many_mods-2.0/ebin/m.@EMULATOR@: lib/many_mods-2.0/src/m.erl
+	erlc $(EFLAGS) -olib/many_mods-2.0/ebin lib/many_mods-2.0/src/m.erl
 
 
 app1_app2/lib1/app1-1.0/ebin/app1_sup.@EMULATOR@: app1_app2/lib1/app1-1.0/src/app1_sup.erl
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/README b/lib/sasl/test/release_handler_SUITE_data/lib/README
index 667d21d4cf..639a4ca0fb 100644
--- a/lib/sasl/test/release_handler_SUITE_data/lib/README
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/README
@@ -13,4 +13,21 @@ start version, includes b_lib and b_server
 
 b-2.0:
 can be upgraded to from b-1.0.
-Removes b_lib and updates b_server
+Removes b_lib (soft_purge) and updates b_server (brutal_purge)
+* The diff in purge method is important for test "check_and_purge", in
+  order to check that the purge option to check_install_release works
+  for both methods.
+
+many_mods-1.0:
+start version.
+m:start/1 starts N procs, each calling Mod:bar() in all other modules (m1-m10).
+m1-m10: implements bar() which returns a big constant.
+The point is to get many processes with references to many modules,
+and then load the modules again so that old code exists. See tests
+otp_9395_update_many_mods and otp_9395_rm_many_mods.
+
+many_mods-1.1:
+can be upgraded to from many_mods-1.0. Updates modules m1-m10.
+
+many_mods-2.0:
+can be upgraded to from many_mods-1.0. Removes modules m1-m10.
\ No newline at end of file
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/b-2.0/ebin/b.appup b/lib/sasl/test/release_handler_SUITE_data/lib/b-2.0/ebin/b.appup
index d261a37732..001255a88c 100644
--- a/lib/sasl/test/release_handler_SUITE_data/lib/b-2.0/ebin/b.appup
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/b-2.0/ebin/b.appup
@@ -1,3 +1,6 @@
+%% -*- erlang -*-
 {"2.0",
- [{"1.0",[{delete_module,b_lib}, {update,b_server,{advanced,[]}}]}],
- [{"1.0",[{add_module,b_lib},{update,b_server,{advanced,[]}}]}]}.
+ [{"1.0",[{remove_module,b_lib,soft_purge,soft_purge,[]},
+	  {update,b_server,{advanced,[]}}]}],
+ [{"1.0",[{add_module,b_lib},
+	  {update,b_server,{advanced,[]}}]}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/ebin/many_mods.app b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/ebin/many_mods.app
new file mode 100644
index 0000000000..aa39adfffa
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/ebin/many_mods.app
@@ -0,0 +1,17 @@
+%% -*- erlang -*-
+{application, many_mods,
+ [{description, "Application with many modules  CXC 138 11"},
+  {vsn, "1.0"},
+  {modules, [{m, 1},
+	     {m1,1},
+	     {m2,1},
+	     {m3,1},
+	     {m4,1},
+	     {m5,1},
+	     {m6,1},
+	     {m7,1},
+	     {m8,1},
+	     {m9,1},
+	     {m10,1}]},
+  {registered, []},
+  {applications, [kernel, stdlib]}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m.erl
new file mode 100644
index 0000000000..418102bebb
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m.erl
@@ -0,0 +1,11 @@
+-module(m).
+-compile(export_all).
+
+start(NProcs) ->
+    Modules = [m1,m2,m3,m4,m5,m6,m7,m8,m9,m10],
+    Pids = [spawn_link(fun() ->
+			       Cs = [M:bar() || M <- Modules],
+			       receive stop -> Cs end
+		       end) ||
+	       _ <- lists:seq(1,NProcs)],
+    {Modules,Pids}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m1.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m1.erl
new file mode 100644
index 0000000000..cacc13f5d7
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m1.erl
@@ -0,0 +1,4 @@
+-module(m1).
+-compile(export_all).
+%% A module with a big constant...
+bar() -> {now(),[{1,'1',"1"},{2,'2',"2"},{3,'3',"3"},{4,'4',"4"},{5,'5',"5"},{6,'6',"6"},{7,'7',"7"},{8,'8',"8"},{9,'9',"9"},{10,'10',"10"},{11,'11',"11"},{12,'12',"12"},{13,'13',"13"},{14,'14',"14"},{15,'15',"15"},{16,'16',"16"},{17,'17',"17"},{18,'18',"18"},{19,'19',"19"},{20,'20',"20"},{21,'21',"21"},{22,'22',"22"},{23,'23',"23"},{24,'24',"24"},{25,'25',"25"},{26,'26',"26"},{27,'27',"27"},{28,'28',"28"},{29,'29',"29"},{30,'30',"30"},{31,'31',"31"},{32,'32',"32"},{33,'33',"33"},{34,'34',"34"},{35,'35',"35"},{36,'36',"36"},{37,'37',"37"},{38,'38',"38"},{39,'39',"39"},{40,'40',"40"},{41,'41',"41"},{42,'42',"42"},{43,'43',"43"},{44,'44',"44"},{45,'45',"45"},{46,'46',"46"},{47,'47',"47"},{48,'48',"48"},{49,'49',"49"},{50,'50',"50"},{51,'51',"51"},{52,'52',"52"},{53,'53',"53"},{54,'54',"54"},{55,'55',"55"},{56,'56',"56"},{57,'57',"57"},{58,'58',"58"},{59,'59',"59"},{60,'60',"60"},{61,'61',"61"},{62,'62',"62"},{63,'63',"63"},{64,'64',"64"},{65,'65',"65"},{66,'66',"66"},{67,'67',"67"},{68,'68',"68"},{69,'69',"69"},{70,'70',"70"},{71,'71',"71"},{72,'72',"72"},{73,'73',"73"},{74,'74',"74"},{75,'75',"75"},{76,'76',"76"},{77,'77',"77"},{78,'78',"78"},{79,'79',"79"},{80,'80',"80"},{81,'81',"81"},{82,'82',"82"},{83,'83',"83"},{84,'84',"84"},{85,'85',"85"},{86,'86',"86"},{87,'87',"87"},{88,'88',"88"},{89,'89',"89"},{90,'90',"90"},{91,'91',"91"},{92,'92',"92"},{93,'93',"93"},{94,'94',"94"},{95,'95',"95"},{96,'96',"96"},{97,'97',"97"},{98,'98',"98"},{99,'99',"99"},{100,'100',"100"}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m10.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m10.erl
new file mode 100644
index 0000000000..81e120b891
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m10.erl
@@ -0,0 +1,4 @@
+-module(m10).
+-compile(export_all).
+%% A module with a big constant...
+bar() -> {now(),[{1,'1',"1"},{2,'2',"2"},{3,'3',"3"},{4,'4',"4"},{5,'5',"5"},{6,'6',"6"},{7,'7',"7"},{8,'8',"8"},{9,'9',"9"},{10,'10',"10"},{11,'11',"11"},{12,'12',"12"},{13,'13',"13"},{14,'14',"14"},{15,'15',"15"},{16,'16',"16"},{17,'17',"17"},{18,'18',"18"},{19,'19',"19"},{20,'20',"20"},{21,'21',"21"},{22,'22',"22"},{23,'23',"23"},{24,'24',"24"},{25,'25',"25"},{26,'26',"26"},{27,'27',"27"},{28,'28',"28"},{29,'29',"29"},{30,'30',"30"},{31,'31',"31"},{32,'32',"32"},{33,'33',"33"},{34,'34',"34"},{35,'35',"35"},{36,'36',"36"},{37,'37',"37"},{38,'38',"38"},{39,'39',"39"},{40,'40',"40"},{41,'41',"41"},{42,'42',"42"},{43,'43',"43"},{44,'44',"44"},{45,'45',"45"},{46,'46',"46"},{47,'47',"47"},{48,'48',"48"},{49,'49',"49"},{50,'50',"50"},{51,'51',"51"},{52,'52',"52"},{53,'53',"53"},{54,'54',"54"},{55,'55',"55"},{56,'56',"56"},{57,'57',"57"},{58,'58',"58"},{59,'59',"59"},{60,'60',"60"},{61,'61',"61"},{62,'62',"62"},{63,'63',"63"},{64,'64',"64"},{65,'65',"65"},{66,'66',"66"},{67,'67',"67"},{68,'68',"68"},{69,'69',"69"},{70,'70',"70"},{71,'71',"71"},{72,'72',"72"},{73,'73',"73"},{74,'74',"74"},{75,'75',"75"},{76,'76',"76"},{77,'77',"77"},{78,'78',"78"},{79,'79',"79"},{80,'80',"80"},{81,'81',"81"},{82,'82',"82"},{83,'83',"83"},{84,'84',"84"},{85,'85',"85"},{86,'86',"86"},{87,'87',"87"},{88,'88',"88"},{89,'89',"89"},{90,'90',"90"},{91,'91',"91"},{92,'92',"92"},{93,'93',"93"},{94,'94',"94"},{95,'95',"95"},{96,'96',"96"},{97,'97',"97"},{98,'98',"98"},{99,'99',"99"},{100,'100',"100"}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m2.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m2.erl
new file mode 100644
index 0000000000..481276ba7b
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m2.erl
@@ -0,0 +1,4 @@
+-module(m2).
+-compile(export_all).
+%% A module with a big constant...
+bar() -> {now(),[{1,'1',"1"},{2,'2',"2"},{3,'3',"3"},{4,'4',"4"},{5,'5',"5"},{6,'6',"6"},{7,'7',"7"},{8,'8',"8"},{9,'9',"9"},{10,'10',"10"},{11,'11',"11"},{12,'12',"12"},{13,'13',"13"},{14,'14',"14"},{15,'15',"15"},{16,'16',"16"},{17,'17',"17"},{18,'18',"18"},{19,'19',"19"},{20,'20',"20"},{21,'21',"21"},{22,'22',"22"},{23,'23',"23"},{24,'24',"24"},{25,'25',"25"},{26,'26',"26"},{27,'27',"27"},{28,'28',"28"},{29,'29',"29"},{30,'30',"30"},{31,'31',"31"},{32,'32',"32"},{33,'33',"33"},{34,'34',"34"},{35,'35',"35"},{36,'36',"36"},{37,'37',"37"},{38,'38',"38"},{39,'39',"39"},{40,'40',"40"},{41,'41',"41"},{42,'42',"42"},{43,'43',"43"},{44,'44',"44"},{45,'45',"45"},{46,'46',"46"},{47,'47',"47"},{48,'48',"48"},{49,'49',"49"},{50,'50',"50"},{51,'51',"51"},{52,'52',"52"},{53,'53',"53"},{54,'54',"54"},{55,'55',"55"},{56,'56',"56"},{57,'57',"57"},{58,'58',"58"},{59,'59',"59"},{60,'60',"60"},{61,'61',"61"},{62,'62',"62"},{63,'63',"63"},{64,'64',"64"},{65,'65',"65"},{66,'66',"66"},{67,'67',"67"},{68,'68',"68"},{69,'69',"69"},{70,'70',"70"},{71,'71',"71"},{72,'72',"72"},{73,'73',"73"},{74,'74',"74"},{75,'75',"75"},{76,'76',"76"},{77,'77',"77"},{78,'78',"78"},{79,'79',"79"},{80,'80',"80"},{81,'81',"81"},{82,'82',"82"},{83,'83',"83"},{84,'84',"84"},{85,'85',"85"},{86,'86',"86"},{87,'87',"87"},{88,'88',"88"},{89,'89',"89"},{90,'90',"90"},{91,'91',"91"},{92,'92',"92"},{93,'93',"93"},{94,'94',"94"},{95,'95',"95"},{96,'96',"96"},{97,'97',"97"},{98,'98',"98"},{99,'99',"99"},{100,'100',"100"}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m3.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m3.erl
new file mode 100644
index 0000000000..9a04ed5fc9
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m3.erl
@@ -0,0 +1,4 @@
+-module(m3).
+-compile(export_all).
+%% A module with a big constant...
+bar() -> {now(),[{1,'1',"1"},{2,'2',"2"},{3,'3',"3"},{4,'4',"4"},{5,'5',"5"},{6,'6',"6"},{7,'7',"7"},{8,'8',"8"},{9,'9',"9"},{10,'10',"10"},{11,'11',"11"},{12,'12',"12"},{13,'13',"13"},{14,'14',"14"},{15,'15',"15"},{16,'16',"16"},{17,'17',"17"},{18,'18',"18"},{19,'19',"19"},{20,'20',"20"},{21,'21',"21"},{22,'22',"22"},{23,'23',"23"},{24,'24',"24"},{25,'25',"25"},{26,'26',"26"},{27,'27',"27"},{28,'28',"28"},{29,'29',"29"},{30,'30',"30"},{31,'31',"31"},{32,'32',"32"},{33,'33',"33"},{34,'34',"34"},{35,'35',"35"},{36,'36',"36"},{37,'37',"37"},{38,'38',"38"},{39,'39',"39"},{40,'40',"40"},{41,'41',"41"},{42,'42',"42"},{43,'43',"43"},{44,'44',"44"},{45,'45',"45"},{46,'46',"46"},{47,'47',"47"},{48,'48',"48"},{49,'49',"49"},{50,'50',"50"},{51,'51',"51"},{52,'52',"52"},{53,'53',"53"},{54,'54',"54"},{55,'55',"55"},{56,'56',"56"},{57,'57',"57"},{58,'58',"58"},{59,'59',"59"},{60,'60',"60"},{61,'61',"61"},{62,'62',"62"},{63,'63',"63"},{64,'64',"64"},{65,'65',"65"},{66,'66',"66"},{67,'67',"67"},{68,'68',"68"},{69,'69',"69"},{70,'70',"70"},{71,'71',"71"},{72,'72',"72"},{73,'73',"73"},{74,'74',"74"},{75,'75',"75"},{76,'76',"76"},{77,'77',"77"},{78,'78',"78"},{79,'79',"79"},{80,'80',"80"},{81,'81',"81"},{82,'82',"82"},{83,'83',"83"},{84,'84',"84"},{85,'85',"85"},{86,'86',"86"},{87,'87',"87"},{88,'88',"88"},{89,'89',"89"},{90,'90',"90"},{91,'91',"91"},{92,'92',"92"},{93,'93',"93"},{94,'94',"94"},{95,'95',"95"},{96,'96',"96"},{97,'97',"97"},{98,'98',"98"},{99,'99',"99"},{100,'100',"100"}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m4.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m4.erl
new file mode 100644
index 0000000000..90de9a30c9
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m4.erl
@@ -0,0 +1,4 @@
+-module(m4).
+-compile(export_all).
+%% A module with a big constant...
+bar() -> {now(),[{1,'1',"1"},{2,'2',"2"},{3,'3',"3"},{4,'4',"4"},{5,'5',"5"},{6,'6',"6"},{7,'7',"7"},{8,'8',"8"},{9,'9',"9"},{10,'10',"10"},{11,'11',"11"},{12,'12',"12"},{13,'13',"13"},{14,'14',"14"},{15,'15',"15"},{16,'16',"16"},{17,'17',"17"},{18,'18',"18"},{19,'19',"19"},{20,'20',"20"},{21,'21',"21"},{22,'22',"22"},{23,'23',"23"},{24,'24',"24"},{25,'25',"25"},{26,'26',"26"},{27,'27',"27"},{28,'28',"28"},{29,'29',"29"},{30,'30',"30"},{31,'31',"31"},{32,'32',"32"},{33,'33',"33"},{34,'34',"34"},{35,'35',"35"},{36,'36',"36"},{37,'37',"37"},{38,'38',"38"},{39,'39',"39"},{40,'40',"40"},{41,'41',"41"},{42,'42',"42"},{43,'43',"43"},{44,'44',"44"},{45,'45',"45"},{46,'46',"46"},{47,'47',"47"},{48,'48',"48"},{49,'49',"49"},{50,'50',"50"},{51,'51',"51"},{52,'52',"52"},{53,'53',"53"},{54,'54',"54"},{55,'55',"55"},{56,'56',"56"},{57,'57',"57"},{58,'58',"58"},{59,'59',"59"},{60,'60',"60"},{61,'61',"61"},{62,'62',"62"},{63,'63',"63"},{64,'64',"64"},{65,'65',"65"},{66,'66',"66"},{67,'67',"67"},{68,'68',"68"},{69,'69',"69"},{70,'70',"70"},{71,'71',"71"},{72,'72',"72"},{73,'73',"73"},{74,'74',"74"},{75,'75',"75"},{76,'76',"76"},{77,'77',"77"},{78,'78',"78"},{79,'79',"79"},{80,'80',"80"},{81,'81',"81"},{82,'82',"82"},{83,'83',"83"},{84,'84',"84"},{85,'85',"85"},{86,'86',"86"},{87,'87',"87"},{88,'88',"88"},{89,'89',"89"},{90,'90',"90"},{91,'91',"91"},{92,'92',"92"},{93,'93',"93"},{94,'94',"94"},{95,'95',"95"},{96,'96',"96"},{97,'97',"97"},{98,'98',"98"},{99,'99',"99"},{100,'100',"100"}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m5.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m5.erl
new file mode 100644
index 0000000000..8a9b690dfa
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m5.erl
@@ -0,0 +1,4 @@
+-module(m5).
+-compile(export_all).
+%% A module with a big constant...
+bar() -> {now(),[{1,'1',"1"},{2,'2',"2"},{3,'3',"3"},{4,'4',"4"},{5,'5',"5"},{6,'6',"6"},{7,'7',"7"},{8,'8',"8"},{9,'9',"9"},{10,'10',"10"},{11,'11',"11"},{12,'12',"12"},{13,'13',"13"},{14,'14',"14"},{15,'15',"15"},{16,'16',"16"},{17,'17',"17"},{18,'18',"18"},{19,'19',"19"},{20,'20',"20"},{21,'21',"21"},{22,'22',"22"},{23,'23',"23"},{24,'24',"24"},{25,'25',"25"},{26,'26',"26"},{27,'27',"27"},{28,'28',"28"},{29,'29',"29"},{30,'30',"30"},{31,'31',"31"},{32,'32',"32"},{33,'33',"33"},{34,'34',"34"},{35,'35',"35"},{36,'36',"36"},{37,'37',"37"},{38,'38',"38"},{39,'39',"39"},{40,'40',"40"},{41,'41',"41"},{42,'42',"42"},{43,'43',"43"},{44,'44',"44"},{45,'45',"45"},{46,'46',"46"},{47,'47',"47"},{48,'48',"48"},{49,'49',"49"},{50,'50',"50"},{51,'51',"51"},{52,'52',"52"},{53,'53',"53"},{54,'54',"54"},{55,'55',"55"},{56,'56',"56"},{57,'57',"57"},{58,'58',"58"},{59,'59',"59"},{60,'60',"60"},{61,'61',"61"},{62,'62',"62"},{63,'63',"63"},{64,'64',"64"},{65,'65',"65"},{66,'66',"66"},{67,'67',"67"},{68,'68',"68"},{69,'69',"69"},{70,'70',"70"},{71,'71',"71"},{72,'72',"72"},{73,'73',"73"},{74,'74',"74"},{75,'75',"75"},{76,'76',"76"},{77,'77',"77"},{78,'78',"78"},{79,'79',"79"},{80,'80',"80"},{81,'81',"81"},{82,'82',"82"},{83,'83',"83"},{84,'84',"84"},{85,'85',"85"},{86,'86',"86"},{87,'87',"87"},{88,'88',"88"},{89,'89',"89"},{90,'90',"90"},{91,'91',"91"},{92,'92',"92"},{93,'93',"93"},{94,'94',"94"},{95,'95',"95"},{96,'96',"96"},{97,'97',"97"},{98,'98',"98"},{99,'99',"99"},{100,'100',"100"}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m6.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m6.erl
new file mode 100644
index 0000000000..cd0d3977ed
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m6.erl
@@ -0,0 +1,4 @@
+-module(m6).
+-compile(export_all).
+%% A module with a big constant...
+bar() -> {now(),[{1,'1',"1"},{2,'2',"2"},{3,'3',"3"},{4,'4',"4"},{5,'5',"5"},{6,'6',"6"},{7,'7',"7"},{8,'8',"8"},{9,'9',"9"},{10,'10',"10"},{11,'11',"11"},{12,'12',"12"},{13,'13',"13"},{14,'14',"14"},{15,'15',"15"},{16,'16',"16"},{17,'17',"17"},{18,'18',"18"},{19,'19',"19"},{20,'20',"20"},{21,'21',"21"},{22,'22',"22"},{23,'23',"23"},{24,'24',"24"},{25,'25',"25"},{26,'26',"26"},{27,'27',"27"},{28,'28',"28"},{29,'29',"29"},{30,'30',"30"},{31,'31',"31"},{32,'32',"32"},{33,'33',"33"},{34,'34',"34"},{35,'35',"35"},{36,'36',"36"},{37,'37',"37"},{38,'38',"38"},{39,'39',"39"},{40,'40',"40"},{41,'41',"41"},{42,'42',"42"},{43,'43',"43"},{44,'44',"44"},{45,'45',"45"},{46,'46',"46"},{47,'47',"47"},{48,'48',"48"},{49,'49',"49"},{50,'50',"50"},{51,'51',"51"},{52,'52',"52"},{53,'53',"53"},{54,'54',"54"},{55,'55',"55"},{56,'56',"56"},{57,'57',"57"},{58,'58',"58"},{59,'59',"59"},{60,'60',"60"},{61,'61',"61"},{62,'62',"62"},{63,'63',"63"},{64,'64',"64"},{65,'65',"65"},{66,'66',"66"},{67,'67',"67"},{68,'68',"68"},{69,'69',"69"},{70,'70',"70"},{71,'71',"71"},{72,'72',"72"},{73,'73',"73"},{74,'74',"74"},{75,'75',"75"},{76,'76',"76"},{77,'77',"77"},{78,'78',"78"},{79,'79',"79"},{80,'80',"80"},{81,'81',"81"},{82,'82',"82"},{83,'83',"83"},{84,'84',"84"},{85,'85',"85"},{86,'86',"86"},{87,'87',"87"},{88,'88',"88"},{89,'89',"89"},{90,'90',"90"},{91,'91',"91"},{92,'92',"92"},{93,'93',"93"},{94,'94',"94"},{95,'95',"95"},{96,'96',"96"},{97,'97',"97"},{98,'98',"98"},{99,'99',"99"},{100,'100',"100"}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m7.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m7.erl
new file mode 100644
index 0000000000..1f79918d6e
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m7.erl
@@ -0,0 +1,4 @@
+-module(m7).
+-compile(export_all).
+%% A module with a big constant...
+bar() -> {now(),[{1,'1',"1"},{2,'2',"2"},{3,'3',"3"},{4,'4',"4"},{5,'5',"5"},{6,'6',"6"},{7,'7',"7"},{8,'8',"8"},{9,'9',"9"},{10,'10',"10"},{11,'11',"11"},{12,'12',"12"},{13,'13',"13"},{14,'14',"14"},{15,'15',"15"},{16,'16',"16"},{17,'17',"17"},{18,'18',"18"},{19,'19',"19"},{20,'20',"20"},{21,'21',"21"},{22,'22',"22"},{23,'23',"23"},{24,'24',"24"},{25,'25',"25"},{26,'26',"26"},{27,'27',"27"},{28,'28',"28"},{29,'29',"29"},{30,'30',"30"},{31,'31',"31"},{32,'32',"32"},{33,'33',"33"},{34,'34',"34"},{35,'35',"35"},{36,'36',"36"},{37,'37',"37"},{38,'38',"38"},{39,'39',"39"},{40,'40',"40"},{41,'41',"41"},{42,'42',"42"},{43,'43',"43"},{44,'44',"44"},{45,'45',"45"},{46,'46',"46"},{47,'47',"47"},{48,'48',"48"},{49,'49',"49"},{50,'50',"50"},{51,'51',"51"},{52,'52',"52"},{53,'53',"53"},{54,'54',"54"},{55,'55',"55"},{56,'56',"56"},{57,'57',"57"},{58,'58',"58"},{59,'59',"59"},{60,'60',"60"},{61,'61',"61"},{62,'62',"62"},{63,'63',"63"},{64,'64',"64"},{65,'65',"65"},{66,'66',"66"},{67,'67',"67"},{68,'68',"68"},{69,'69',"69"},{70,'70',"70"},{71,'71',"71"},{72,'72',"72"},{73,'73',"73"},{74,'74',"74"},{75,'75',"75"},{76,'76',"76"},{77,'77',"77"},{78,'78',"78"},{79,'79',"79"},{80,'80',"80"},{81,'81',"81"},{82,'82',"82"},{83,'83',"83"},{84,'84',"84"},{85,'85',"85"},{86,'86',"86"},{87,'87',"87"},{88,'88',"88"},{89,'89',"89"},{90,'90',"90"},{91,'91',"91"},{92,'92',"92"},{93,'93',"93"},{94,'94',"94"},{95,'95',"95"},{96,'96',"96"},{97,'97',"97"},{98,'98',"98"},{99,'99',"99"},{100,'100',"100"}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m8.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m8.erl
new file mode 100644
index 0000000000..2ce03a0b7e
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m8.erl
@@ -0,0 +1,4 @@
+-module(m8).
+-compile(export_all).
+%% A module with a big constant...
+bar() -> {now(),[{1,'1',"1"},{2,'2',"2"},{3,'3',"3"},{4,'4',"4"},{5,'5',"5"},{6,'6',"6"},{7,'7',"7"},{8,'8',"8"},{9,'9',"9"},{10,'10',"10"},{11,'11',"11"},{12,'12',"12"},{13,'13',"13"},{14,'14',"14"},{15,'15',"15"},{16,'16',"16"},{17,'17',"17"},{18,'18',"18"},{19,'19',"19"},{20,'20',"20"},{21,'21',"21"},{22,'22',"22"},{23,'23',"23"},{24,'24',"24"},{25,'25',"25"},{26,'26',"26"},{27,'27',"27"},{28,'28',"28"},{29,'29',"29"},{30,'30',"30"},{31,'31',"31"},{32,'32',"32"},{33,'33',"33"},{34,'34',"34"},{35,'35',"35"},{36,'36',"36"},{37,'37',"37"},{38,'38',"38"},{39,'39',"39"},{40,'40',"40"},{41,'41',"41"},{42,'42',"42"},{43,'43',"43"},{44,'44',"44"},{45,'45',"45"},{46,'46',"46"},{47,'47',"47"},{48,'48',"48"},{49,'49',"49"},{50,'50',"50"},{51,'51',"51"},{52,'52',"52"},{53,'53',"53"},{54,'54',"54"},{55,'55',"55"},{56,'56',"56"},{57,'57',"57"},{58,'58',"58"},{59,'59',"59"},{60,'60',"60"},{61,'61',"61"},{62,'62',"62"},{63,'63',"63"},{64,'64',"64"},{65,'65',"65"},{66,'66',"66"},{67,'67',"67"},{68,'68',"68"},{69,'69',"69"},{70,'70',"70"},{71,'71',"71"},{72,'72',"72"},{73,'73',"73"},{74,'74',"74"},{75,'75',"75"},{76,'76',"76"},{77,'77',"77"},{78,'78',"78"},{79,'79',"79"},{80,'80',"80"},{81,'81',"81"},{82,'82',"82"},{83,'83',"83"},{84,'84',"84"},{85,'85',"85"},{86,'86',"86"},{87,'87',"87"},{88,'88',"88"},{89,'89',"89"},{90,'90',"90"},{91,'91',"91"},{92,'92',"92"},{93,'93',"93"},{94,'94',"94"},{95,'95',"95"},{96,'96',"96"},{97,'97',"97"},{98,'98',"98"},{99,'99',"99"},{100,'100',"100"}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m9.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m9.erl
new file mode 100644
index 0000000000..1c5f72e628
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.0/src/m9.erl
@@ -0,0 +1,4 @@
+-module(m9).
+-compile(export_all).
+%% A module with a big constant...
+bar() -> {now(),[{1,'1',"1"},{2,'2',"2"},{3,'3',"3"},{4,'4',"4"},{5,'5',"5"},{6,'6',"6"},{7,'7',"7"},{8,'8',"8"},{9,'9',"9"},{10,'10',"10"},{11,'11',"11"},{12,'12',"12"},{13,'13',"13"},{14,'14',"14"},{15,'15',"15"},{16,'16',"16"},{17,'17',"17"},{18,'18',"18"},{19,'19',"19"},{20,'20',"20"},{21,'21',"21"},{22,'22',"22"},{23,'23',"23"},{24,'24',"24"},{25,'25',"25"},{26,'26',"26"},{27,'27',"27"},{28,'28',"28"},{29,'29',"29"},{30,'30',"30"},{31,'31',"31"},{32,'32',"32"},{33,'33',"33"},{34,'34',"34"},{35,'35',"35"},{36,'36',"36"},{37,'37',"37"},{38,'38',"38"},{39,'39',"39"},{40,'40',"40"},{41,'41',"41"},{42,'42',"42"},{43,'43',"43"},{44,'44',"44"},{45,'45',"45"},{46,'46',"46"},{47,'47',"47"},{48,'48',"48"},{49,'49',"49"},{50,'50',"50"},{51,'51',"51"},{52,'52',"52"},{53,'53',"53"},{54,'54',"54"},{55,'55',"55"},{56,'56',"56"},{57,'57',"57"},{58,'58',"58"},{59,'59',"59"},{60,'60',"60"},{61,'61',"61"},{62,'62',"62"},{63,'63',"63"},{64,'64',"64"},{65,'65',"65"},{66,'66',"66"},{67,'67',"67"},{68,'68',"68"},{69,'69',"69"},{70,'70',"70"},{71,'71',"71"},{72,'72',"72"},{73,'73',"73"},{74,'74',"74"},{75,'75',"75"},{76,'76',"76"},{77,'77',"77"},{78,'78',"78"},{79,'79',"79"},{80,'80',"80"},{81,'81',"81"},{82,'82',"82"},{83,'83',"83"},{84,'84',"84"},{85,'85',"85"},{86,'86',"86"},{87,'87',"87"},{88,'88',"88"},{89,'89',"89"},{90,'90',"90"},{91,'91',"91"},{92,'92',"92"},{93,'93',"93"},{94,'94',"94"},{95,'95',"95"},{96,'96',"96"},{97,'97',"97"},{98,'98',"98"},{99,'99',"99"},{100,'100',"100"}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/ebin/many_mods.app b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/ebin/many_mods.app
new file mode 100644
index 0000000000..36c50caf2f
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/ebin/many_mods.app
@@ -0,0 +1,17 @@
+%% -*- erlang -*-
+{application, many_mods,
+ [{description, "Application with many modules  CXC 138 11"},
+  {vsn, "1.1"},
+  {modules, [{m, 1},
+	     {m1,1},
+	     {m2,1},
+	     {m3,1},
+	     {m4,1},
+	     {m5,1},
+	     {m6,1},
+	     {m7,1},
+	     {m8,1},
+	     {m9,1},
+	     {m10,1}]},
+  {registered, []},
+  {applications, [kernel, stdlib]}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/ebin/many_mods.appup b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/ebin/many_mods.appup
new file mode 100644
index 0000000000..696435e06f
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/ebin/many_mods.appup
@@ -0,0 +1,22 @@
+%% -*- erlang -*-
+{"1.1",
+ [{"1.0",[{update,m1},
+	  {update,m2},
+	  {update,m3},
+	  {update,m4},
+	  {update,m5},
+	  {update,m6},
+	  {update,m7},
+	  {update,m8},
+	  {update,m9},
+	  {update,m10}]}],
+ [{"1.0",[{update,m1},
+	  {update,m2},
+	  {update,m3},
+	  {update,m4},
+	  {update,m5},
+	  {update,m6},
+	  {update,m7},
+	  {update,m8},
+	  {update,m9},
+	  {update,m10}]}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m.erl
new file mode 100644
index 0000000000..418102bebb
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m.erl
@@ -0,0 +1,11 @@
+-module(m).
+-compile(export_all).
+
+start(NProcs) ->
+    Modules = [m1,m2,m3,m4,m5,m6,m7,m8,m9,m10],
+    Pids = [spawn_link(fun() ->
+			       Cs = [M:bar() || M <- Modules],
+			       receive stop -> Cs end
+		       end) ||
+	       _ <- lists:seq(1,NProcs)],
+    {Modules,Pids}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m1.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m1.erl
new file mode 100644
index 0000000000..cacc13f5d7
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m1.erl
@@ -0,0 +1,4 @@
+-module(m1).
+-compile(export_all).
+%% A module with a big constant...
+bar() -> {now(),[{1,'1',"1"},{2,'2',"2"},{3,'3',"3"},{4,'4',"4"},{5,'5',"5"},{6,'6',"6"},{7,'7',"7"},{8,'8',"8"},{9,'9',"9"},{10,'10',"10"},{11,'11',"11"},{12,'12',"12"},{13,'13',"13"},{14,'14',"14"},{15,'15',"15"},{16,'16',"16"},{17,'17',"17"},{18,'18',"18"},{19,'19',"19"},{20,'20',"20"},{21,'21',"21"},{22,'22',"22"},{23,'23',"23"},{24,'24',"24"},{25,'25',"25"},{26,'26',"26"},{27,'27',"27"},{28,'28',"28"},{29,'29',"29"},{30,'30',"30"},{31,'31',"31"},{32,'32',"32"},{33,'33',"33"},{34,'34',"34"},{35,'35',"35"},{36,'36',"36"},{37,'37',"37"},{38,'38',"38"},{39,'39',"39"},{40,'40',"40"},{41,'41',"41"},{42,'42',"42"},{43,'43',"43"},{44,'44',"44"},{45,'45',"45"},{46,'46',"46"},{47,'47',"47"},{48,'48',"48"},{49,'49',"49"},{50,'50',"50"},{51,'51',"51"},{52,'52',"52"},{53,'53',"53"},{54,'54',"54"},{55,'55',"55"},{56,'56',"56"},{57,'57',"57"},{58,'58',"58"},{59,'59',"59"},{60,'60',"60"},{61,'61',"61"},{62,'62',"62"},{63,'63',"63"},{64,'64',"64"},{65,'65',"65"},{66,'66',"66"},{67,'67',"67"},{68,'68',"68"},{69,'69',"69"},{70,'70',"70"},{71,'71',"71"},{72,'72',"72"},{73,'73',"73"},{74,'74',"74"},{75,'75',"75"},{76,'76',"76"},{77,'77',"77"},{78,'78',"78"},{79,'79',"79"},{80,'80',"80"},{81,'81',"81"},{82,'82',"82"},{83,'83',"83"},{84,'84',"84"},{85,'85',"85"},{86,'86',"86"},{87,'87',"87"},{88,'88',"88"},{89,'89',"89"},{90,'90',"90"},{91,'91',"91"},{92,'92',"92"},{93,'93',"93"},{94,'94',"94"},{95,'95',"95"},{96,'96',"96"},{97,'97',"97"},{98,'98',"98"},{99,'99',"99"},{100,'100',"100"}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m10.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m10.erl
new file mode 100644
index 0000000000..81e120b891
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m10.erl
@@ -0,0 +1,4 @@
+-module(m10).
+-compile(export_all).
+%% A module with a big constant...
+bar() -> {now(),[{1,'1',"1"},{2,'2',"2"},{3,'3',"3"},{4,'4',"4"},{5,'5',"5"},{6,'6',"6"},{7,'7',"7"},{8,'8',"8"},{9,'9',"9"},{10,'10',"10"},{11,'11',"11"},{12,'12',"12"},{13,'13',"13"},{14,'14',"14"},{15,'15',"15"},{16,'16',"16"},{17,'17',"17"},{18,'18',"18"},{19,'19',"19"},{20,'20',"20"},{21,'21',"21"},{22,'22',"22"},{23,'23',"23"},{24,'24',"24"},{25,'25',"25"},{26,'26',"26"},{27,'27',"27"},{28,'28',"28"},{29,'29',"29"},{30,'30',"30"},{31,'31',"31"},{32,'32',"32"},{33,'33',"33"},{34,'34',"34"},{35,'35',"35"},{36,'36',"36"},{37,'37',"37"},{38,'38',"38"},{39,'39',"39"},{40,'40',"40"},{41,'41',"41"},{42,'42',"42"},{43,'43',"43"},{44,'44',"44"},{45,'45',"45"},{46,'46',"46"},{47,'47',"47"},{48,'48',"48"},{49,'49',"49"},{50,'50',"50"},{51,'51',"51"},{52,'52',"52"},{53,'53',"53"},{54,'54',"54"},{55,'55',"55"},{56,'56',"56"},{57,'57',"57"},{58,'58',"58"},{59,'59',"59"},{60,'60',"60"},{61,'61',"61"},{62,'62',"62"},{63,'63',"63"},{64,'64',"64"},{65,'65',"65"},{66,'66',"66"},{67,'67',"67"},{68,'68',"68"},{69,'69',"69"},{70,'70',"70"},{71,'71',"71"},{72,'72',"72"},{73,'73',"73"},{74,'74',"74"},{75,'75',"75"},{76,'76',"76"},{77,'77',"77"},{78,'78',"78"},{79,'79',"79"},{80,'80',"80"},{81,'81',"81"},{82,'82',"82"},{83,'83',"83"},{84,'84',"84"},{85,'85',"85"},{86,'86',"86"},{87,'87',"87"},{88,'88',"88"},{89,'89',"89"},{90,'90',"90"},{91,'91',"91"},{92,'92',"92"},{93,'93',"93"},{94,'94',"94"},{95,'95',"95"},{96,'96',"96"},{97,'97',"97"},{98,'98',"98"},{99,'99',"99"},{100,'100',"100"}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m2.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m2.erl
new file mode 100644
index 0000000000..481276ba7b
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m2.erl
@@ -0,0 +1,4 @@
+-module(m2).
+-compile(export_all).
+%% A module with a big constant...
+bar() -> {now(),[{1,'1',"1"},{2,'2',"2"},{3,'3',"3"},{4,'4',"4"},{5,'5',"5"},{6,'6',"6"},{7,'7',"7"},{8,'8',"8"},{9,'9',"9"},{10,'10',"10"},{11,'11',"11"},{12,'12',"12"},{13,'13',"13"},{14,'14',"14"},{15,'15',"15"},{16,'16',"16"},{17,'17',"17"},{18,'18',"18"},{19,'19',"19"},{20,'20',"20"},{21,'21',"21"},{22,'22',"22"},{23,'23',"23"},{24,'24',"24"},{25,'25',"25"},{26,'26',"26"},{27,'27',"27"},{28,'28',"28"},{29,'29',"29"},{30,'30',"30"},{31,'31',"31"},{32,'32',"32"},{33,'33',"33"},{34,'34',"34"},{35,'35',"35"},{36,'36',"36"},{37,'37',"37"},{38,'38',"38"},{39,'39',"39"},{40,'40',"40"},{41,'41',"41"},{42,'42',"42"},{43,'43',"43"},{44,'44',"44"},{45,'45',"45"},{46,'46',"46"},{47,'47',"47"},{48,'48',"48"},{49,'49',"49"},{50,'50',"50"},{51,'51',"51"},{52,'52',"52"},{53,'53',"53"},{54,'54',"54"},{55,'55',"55"},{56,'56',"56"},{57,'57',"57"},{58,'58',"58"},{59,'59',"59"},{60,'60',"60"},{61,'61',"61"},{62,'62',"62"},{63,'63',"63"},{64,'64',"64"},{65,'65',"65"},{66,'66',"66"},{67,'67',"67"},{68,'68',"68"},{69,'69',"69"},{70,'70',"70"},{71,'71',"71"},{72,'72',"72"},{73,'73',"73"},{74,'74',"74"},{75,'75',"75"},{76,'76',"76"},{77,'77',"77"},{78,'78',"78"},{79,'79',"79"},{80,'80',"80"},{81,'81',"81"},{82,'82',"82"},{83,'83',"83"},{84,'84',"84"},{85,'85',"85"},{86,'86',"86"},{87,'87',"87"},{88,'88',"88"},{89,'89',"89"},{90,'90',"90"},{91,'91',"91"},{92,'92',"92"},{93,'93',"93"},{94,'94',"94"},{95,'95',"95"},{96,'96',"96"},{97,'97',"97"},{98,'98',"98"},{99,'99',"99"},{100,'100',"100"}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m3.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m3.erl
new file mode 100644
index 0000000000..9a04ed5fc9
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m3.erl
@@ -0,0 +1,4 @@
+-module(m3).
+-compile(export_all).
+%% A module with a big constant...
+bar() -> {now(),[{1,'1',"1"},{2,'2',"2"},{3,'3',"3"},{4,'4',"4"},{5,'5',"5"},{6,'6',"6"},{7,'7',"7"},{8,'8',"8"},{9,'9',"9"},{10,'10',"10"},{11,'11',"11"},{12,'12',"12"},{13,'13',"13"},{14,'14',"14"},{15,'15',"15"},{16,'16',"16"},{17,'17',"17"},{18,'18',"18"},{19,'19',"19"},{20,'20',"20"},{21,'21',"21"},{22,'22',"22"},{23,'23',"23"},{24,'24',"24"},{25,'25',"25"},{26,'26',"26"},{27,'27',"27"},{28,'28',"28"},{29,'29',"29"},{30,'30',"30"},{31,'31',"31"},{32,'32',"32"},{33,'33',"33"},{34,'34',"34"},{35,'35',"35"},{36,'36',"36"},{37,'37',"37"},{38,'38',"38"},{39,'39',"39"},{40,'40',"40"},{41,'41',"41"},{42,'42',"42"},{43,'43',"43"},{44,'44',"44"},{45,'45',"45"},{46,'46',"46"},{47,'47',"47"},{48,'48',"48"},{49,'49',"49"},{50,'50',"50"},{51,'51',"51"},{52,'52',"52"},{53,'53',"53"},{54,'54',"54"},{55,'55',"55"},{56,'56',"56"},{57,'57',"57"},{58,'58',"58"},{59,'59',"59"},{60,'60',"60"},{61,'61',"61"},{62,'62',"62"},{63,'63',"63"},{64,'64',"64"},{65,'65',"65"},{66,'66',"66"},{67,'67',"67"},{68,'68',"68"},{69,'69',"69"},{70,'70',"70"},{71,'71',"71"},{72,'72',"72"},{73,'73',"73"},{74,'74',"74"},{75,'75',"75"},{76,'76',"76"},{77,'77',"77"},{78,'78',"78"},{79,'79',"79"},{80,'80',"80"},{81,'81',"81"},{82,'82',"82"},{83,'83',"83"},{84,'84',"84"},{85,'85',"85"},{86,'86',"86"},{87,'87',"87"},{88,'88',"88"},{89,'89',"89"},{90,'90',"90"},{91,'91',"91"},{92,'92',"92"},{93,'93',"93"},{94,'94',"94"},{95,'95',"95"},{96,'96',"96"},{97,'97',"97"},{98,'98',"98"},{99,'99',"99"},{100,'100',"100"}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m4.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m4.erl
new file mode 100644
index 0000000000..90de9a30c9
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m4.erl
@@ -0,0 +1,4 @@
+-module(m4).
+-compile(export_all).
+%% A module with a big constant...
+bar() -> {now(),[{1,'1',"1"},{2,'2',"2"},{3,'3',"3"},{4,'4',"4"},{5,'5',"5"},{6,'6',"6"},{7,'7',"7"},{8,'8',"8"},{9,'9',"9"},{10,'10',"10"},{11,'11',"11"},{12,'12',"12"},{13,'13',"13"},{14,'14',"14"},{15,'15',"15"},{16,'16',"16"},{17,'17',"17"},{18,'18',"18"},{19,'19',"19"},{20,'20',"20"},{21,'21',"21"},{22,'22',"22"},{23,'23',"23"},{24,'24',"24"},{25,'25',"25"},{26,'26',"26"},{27,'27',"27"},{28,'28',"28"},{29,'29',"29"},{30,'30',"30"},{31,'31',"31"},{32,'32',"32"},{33,'33',"33"},{34,'34',"34"},{35,'35',"35"},{36,'36',"36"},{37,'37',"37"},{38,'38',"38"},{39,'39',"39"},{40,'40',"40"},{41,'41',"41"},{42,'42',"42"},{43,'43',"43"},{44,'44',"44"},{45,'45',"45"},{46,'46',"46"},{47,'47',"47"},{48,'48',"48"},{49,'49',"49"},{50,'50',"50"},{51,'51',"51"},{52,'52',"52"},{53,'53',"53"},{54,'54',"54"},{55,'55',"55"},{56,'56',"56"},{57,'57',"57"},{58,'58',"58"},{59,'59',"59"},{60,'60',"60"},{61,'61',"61"},{62,'62',"62"},{63,'63',"63"},{64,'64',"64"},{65,'65',"65"},{66,'66',"66"},{67,'67',"67"},{68,'68',"68"},{69,'69',"69"},{70,'70',"70"},{71,'71',"71"},{72,'72',"72"},{73,'73',"73"},{74,'74',"74"},{75,'75',"75"},{76,'76',"76"},{77,'77',"77"},{78,'78',"78"},{79,'79',"79"},{80,'80',"80"},{81,'81',"81"},{82,'82',"82"},{83,'83',"83"},{84,'84',"84"},{85,'85',"85"},{86,'86',"86"},{87,'87',"87"},{88,'88',"88"},{89,'89',"89"},{90,'90',"90"},{91,'91',"91"},{92,'92',"92"},{93,'93',"93"},{94,'94',"94"},{95,'95',"95"},{96,'96',"96"},{97,'97',"97"},{98,'98',"98"},{99,'99',"99"},{100,'100',"100"}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m5.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m5.erl
new file mode 100644
index 0000000000..8a9b690dfa
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m5.erl
@@ -0,0 +1,4 @@
+-module(m5).
+-compile(export_all).
+%% A module with a big constant...
+bar() -> {now(),[{1,'1',"1"},{2,'2',"2"},{3,'3',"3"},{4,'4',"4"},{5,'5',"5"},{6,'6',"6"},{7,'7',"7"},{8,'8',"8"},{9,'9',"9"},{10,'10',"10"},{11,'11',"11"},{12,'12',"12"},{13,'13',"13"},{14,'14',"14"},{15,'15',"15"},{16,'16',"16"},{17,'17',"17"},{18,'18',"18"},{19,'19',"19"},{20,'20',"20"},{21,'21',"21"},{22,'22',"22"},{23,'23',"23"},{24,'24',"24"},{25,'25',"25"},{26,'26',"26"},{27,'27',"27"},{28,'28',"28"},{29,'29',"29"},{30,'30',"30"},{31,'31',"31"},{32,'32',"32"},{33,'33',"33"},{34,'34',"34"},{35,'35',"35"},{36,'36',"36"},{37,'37',"37"},{38,'38',"38"},{39,'39',"39"},{40,'40',"40"},{41,'41',"41"},{42,'42',"42"},{43,'43',"43"},{44,'44',"44"},{45,'45',"45"},{46,'46',"46"},{47,'47',"47"},{48,'48',"48"},{49,'49',"49"},{50,'50',"50"},{51,'51',"51"},{52,'52',"52"},{53,'53',"53"},{54,'54',"54"},{55,'55',"55"},{56,'56',"56"},{57,'57',"57"},{58,'58',"58"},{59,'59',"59"},{60,'60',"60"},{61,'61',"61"},{62,'62',"62"},{63,'63',"63"},{64,'64',"64"},{65,'65',"65"},{66,'66',"66"},{67,'67',"67"},{68,'68',"68"},{69,'69',"69"},{70,'70',"70"},{71,'71',"71"},{72,'72',"72"},{73,'73',"73"},{74,'74',"74"},{75,'75',"75"},{76,'76',"76"},{77,'77',"77"},{78,'78',"78"},{79,'79',"79"},{80,'80',"80"},{81,'81',"81"},{82,'82',"82"},{83,'83',"83"},{84,'84',"84"},{85,'85',"85"},{86,'86',"86"},{87,'87',"87"},{88,'88',"88"},{89,'89',"89"},{90,'90',"90"},{91,'91',"91"},{92,'92',"92"},{93,'93',"93"},{94,'94',"94"},{95,'95',"95"},{96,'96',"96"},{97,'97',"97"},{98,'98',"98"},{99,'99',"99"},{100,'100',"100"}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m6.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m6.erl
new file mode 100644
index 0000000000..cd0d3977ed
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m6.erl
@@ -0,0 +1,4 @@
+-module(m6).
+-compile(export_all).
+%% A module with a big constant...
+bar() -> {now(),[{1,'1',"1"},{2,'2',"2"},{3,'3',"3"},{4,'4',"4"},{5,'5',"5"},{6,'6',"6"},{7,'7',"7"},{8,'8',"8"},{9,'9',"9"},{10,'10',"10"},{11,'11',"11"},{12,'12',"12"},{13,'13',"13"},{14,'14',"14"},{15,'15',"15"},{16,'16',"16"},{17,'17',"17"},{18,'18',"18"},{19,'19',"19"},{20,'20',"20"},{21,'21',"21"},{22,'22',"22"},{23,'23',"23"},{24,'24',"24"},{25,'25',"25"},{26,'26',"26"},{27,'27',"27"},{28,'28',"28"},{29,'29',"29"},{30,'30',"30"},{31,'31',"31"},{32,'32',"32"},{33,'33',"33"},{34,'34',"34"},{35,'35',"35"},{36,'36',"36"},{37,'37',"37"},{38,'38',"38"},{39,'39',"39"},{40,'40',"40"},{41,'41',"41"},{42,'42',"42"},{43,'43',"43"},{44,'44',"44"},{45,'45',"45"},{46,'46',"46"},{47,'47',"47"},{48,'48',"48"},{49,'49',"49"},{50,'50',"50"},{51,'51',"51"},{52,'52',"52"},{53,'53',"53"},{54,'54',"54"},{55,'55',"55"},{56,'56',"56"},{57,'57',"57"},{58,'58',"58"},{59,'59',"59"},{60,'60',"60"},{61,'61',"61"},{62,'62',"62"},{63,'63',"63"},{64,'64',"64"},{65,'65',"65"},{66,'66',"66"},{67,'67',"67"},{68,'68',"68"},{69,'69',"69"},{70,'70',"70"},{71,'71',"71"},{72,'72',"72"},{73,'73',"73"},{74,'74',"74"},{75,'75',"75"},{76,'76',"76"},{77,'77',"77"},{78,'78',"78"},{79,'79',"79"},{80,'80',"80"},{81,'81',"81"},{82,'82',"82"},{83,'83',"83"},{84,'84',"84"},{85,'85',"85"},{86,'86',"86"},{87,'87',"87"},{88,'88',"88"},{89,'89',"89"},{90,'90',"90"},{91,'91',"91"},{92,'92',"92"},{93,'93',"93"},{94,'94',"94"},{95,'95',"95"},{96,'96',"96"},{97,'97',"97"},{98,'98',"98"},{99,'99',"99"},{100,'100',"100"}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m7.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m7.erl
new file mode 100644
index 0000000000..1f79918d6e
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m7.erl
@@ -0,0 +1,4 @@
+-module(m7).
+-compile(export_all).
+%% A module with a big constant...
+bar() -> {now(),[{1,'1',"1"},{2,'2',"2"},{3,'3',"3"},{4,'4',"4"},{5,'5',"5"},{6,'6',"6"},{7,'7',"7"},{8,'8',"8"},{9,'9',"9"},{10,'10',"10"},{11,'11',"11"},{12,'12',"12"},{13,'13',"13"},{14,'14',"14"},{15,'15',"15"},{16,'16',"16"},{17,'17',"17"},{18,'18',"18"},{19,'19',"19"},{20,'20',"20"},{21,'21',"21"},{22,'22',"22"},{23,'23',"23"},{24,'24',"24"},{25,'25',"25"},{26,'26',"26"},{27,'27',"27"},{28,'28',"28"},{29,'29',"29"},{30,'30',"30"},{31,'31',"31"},{32,'32',"32"},{33,'33',"33"},{34,'34',"34"},{35,'35',"35"},{36,'36',"36"},{37,'37',"37"},{38,'38',"38"},{39,'39',"39"},{40,'40',"40"},{41,'41',"41"},{42,'42',"42"},{43,'43',"43"},{44,'44',"44"},{45,'45',"45"},{46,'46',"46"},{47,'47',"47"},{48,'48',"48"},{49,'49',"49"},{50,'50',"50"},{51,'51',"51"},{52,'52',"52"},{53,'53',"53"},{54,'54',"54"},{55,'55',"55"},{56,'56',"56"},{57,'57',"57"},{58,'58',"58"},{59,'59',"59"},{60,'60',"60"},{61,'61',"61"},{62,'62',"62"},{63,'63',"63"},{64,'64',"64"},{65,'65',"65"},{66,'66',"66"},{67,'67',"67"},{68,'68',"68"},{69,'69',"69"},{70,'70',"70"},{71,'71',"71"},{72,'72',"72"},{73,'73',"73"},{74,'74',"74"},{75,'75',"75"},{76,'76',"76"},{77,'77',"77"},{78,'78',"78"},{79,'79',"79"},{80,'80',"80"},{81,'81',"81"},{82,'82',"82"},{83,'83',"83"},{84,'84',"84"},{85,'85',"85"},{86,'86',"86"},{87,'87',"87"},{88,'88',"88"},{89,'89',"89"},{90,'90',"90"},{91,'91',"91"},{92,'92',"92"},{93,'93',"93"},{94,'94',"94"},{95,'95',"95"},{96,'96',"96"},{97,'97',"97"},{98,'98',"98"},{99,'99',"99"},{100,'100',"100"}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m8.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m8.erl
new file mode 100644
index 0000000000..2ce03a0b7e
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m8.erl
@@ -0,0 +1,4 @@
+-module(m8).
+-compile(export_all).
+%% A module with a big constant...
+bar() -> {now(),[{1,'1',"1"},{2,'2',"2"},{3,'3',"3"},{4,'4',"4"},{5,'5',"5"},{6,'6',"6"},{7,'7',"7"},{8,'8',"8"},{9,'9',"9"},{10,'10',"10"},{11,'11',"11"},{12,'12',"12"},{13,'13',"13"},{14,'14',"14"},{15,'15',"15"},{16,'16',"16"},{17,'17',"17"},{18,'18',"18"},{19,'19',"19"},{20,'20',"20"},{21,'21',"21"},{22,'22',"22"},{23,'23',"23"},{24,'24',"24"},{25,'25',"25"},{26,'26',"26"},{27,'27',"27"},{28,'28',"28"},{29,'29',"29"},{30,'30',"30"},{31,'31',"31"},{32,'32',"32"},{33,'33',"33"},{34,'34',"34"},{35,'35',"35"},{36,'36',"36"},{37,'37',"37"},{38,'38',"38"},{39,'39',"39"},{40,'40',"40"},{41,'41',"41"},{42,'42',"42"},{43,'43',"43"},{44,'44',"44"},{45,'45',"45"},{46,'46',"46"},{47,'47',"47"},{48,'48',"48"},{49,'49',"49"},{50,'50',"50"},{51,'51',"51"},{52,'52',"52"},{53,'53',"53"},{54,'54',"54"},{55,'55',"55"},{56,'56',"56"},{57,'57',"57"},{58,'58',"58"},{59,'59',"59"},{60,'60',"60"},{61,'61',"61"},{62,'62',"62"},{63,'63',"63"},{64,'64',"64"},{65,'65',"65"},{66,'66',"66"},{67,'67',"67"},{68,'68',"68"},{69,'69',"69"},{70,'70',"70"},{71,'71',"71"},{72,'72',"72"},{73,'73',"73"},{74,'74',"74"},{75,'75',"75"},{76,'76',"76"},{77,'77',"77"},{78,'78',"78"},{79,'79',"79"},{80,'80',"80"},{81,'81',"81"},{82,'82',"82"},{83,'83',"83"},{84,'84',"84"},{85,'85',"85"},{86,'86',"86"},{87,'87',"87"},{88,'88',"88"},{89,'89',"89"},{90,'90',"90"},{91,'91',"91"},{92,'92',"92"},{93,'93',"93"},{94,'94',"94"},{95,'95',"95"},{96,'96',"96"},{97,'97',"97"},{98,'98',"98"},{99,'99',"99"},{100,'100',"100"}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m9.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m9.erl
new file mode 100644
index 0000000000..1c5f72e628
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-1.1/src/m9.erl
@@ -0,0 +1,4 @@
+-module(m9).
+-compile(export_all).
+%% A module with a big constant...
+bar() -> {now(),[{1,'1',"1"},{2,'2',"2"},{3,'3',"3"},{4,'4',"4"},{5,'5',"5"},{6,'6',"6"},{7,'7',"7"},{8,'8',"8"},{9,'9',"9"},{10,'10',"10"},{11,'11',"11"},{12,'12',"12"},{13,'13',"13"},{14,'14',"14"},{15,'15',"15"},{16,'16',"16"},{17,'17',"17"},{18,'18',"18"},{19,'19',"19"},{20,'20',"20"},{21,'21',"21"},{22,'22',"22"},{23,'23',"23"},{24,'24',"24"},{25,'25',"25"},{26,'26',"26"},{27,'27',"27"},{28,'28',"28"},{29,'29',"29"},{30,'30',"30"},{31,'31',"31"},{32,'32',"32"},{33,'33',"33"},{34,'34',"34"},{35,'35',"35"},{36,'36',"36"},{37,'37',"37"},{38,'38',"38"},{39,'39',"39"},{40,'40',"40"},{41,'41',"41"},{42,'42',"42"},{43,'43',"43"},{44,'44',"44"},{45,'45',"45"},{46,'46',"46"},{47,'47',"47"},{48,'48',"48"},{49,'49',"49"},{50,'50',"50"},{51,'51',"51"},{52,'52',"52"},{53,'53',"53"},{54,'54',"54"},{55,'55',"55"},{56,'56',"56"},{57,'57',"57"},{58,'58',"58"},{59,'59',"59"},{60,'60',"60"},{61,'61',"61"},{62,'62',"62"},{63,'63',"63"},{64,'64',"64"},{65,'65',"65"},{66,'66',"66"},{67,'67',"67"},{68,'68',"68"},{69,'69',"69"},{70,'70',"70"},{71,'71',"71"},{72,'72',"72"},{73,'73',"73"},{74,'74',"74"},{75,'75',"75"},{76,'76',"76"},{77,'77',"77"},{78,'78',"78"},{79,'79',"79"},{80,'80',"80"},{81,'81',"81"},{82,'82',"82"},{83,'83',"83"},{84,'84',"84"},{85,'85',"85"},{86,'86',"86"},{87,'87',"87"},{88,'88',"88"},{89,'89',"89"},{90,'90',"90"},{91,'91',"91"},{92,'92',"92"},{93,'93',"93"},{94,'94',"94"},{95,'95',"95"},{96,'96',"96"},{97,'97',"97"},{98,'98',"98"},{99,'99',"99"},{100,'100',"100"}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-2.0/ebin/many_mods.app b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-2.0/ebin/many_mods.app
new file mode 100644
index 0000000000..98f6527750
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-2.0/ebin/many_mods.app
@@ -0,0 +1,7 @@
+%% -*- erlang -*-
+{application, many_mods,
+ [{description, "Application with many modules  CXC 138 11"},
+  {vsn, "2.0"},
+  {modules, [{m, 1}]},
+  {registered, []},
+  {applications, [kernel, stdlib]}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-2.0/ebin/many_mods.appup b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-2.0/ebin/many_mods.appup
new file mode 100644
index 0000000000..3a34db78c1
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-2.0/ebin/many_mods.appup
@@ -0,0 +1,24 @@
+%% -*- erlang -*-
+{"2.0",
+ [{"1.0",[{update,m},
+	  {delete_module,m1},
+	  {delete_module,m2},
+	  {delete_module,m3},
+	  {delete_module,m4},
+	  {delete_module,m5},
+	  {delete_module,m6},
+	  {delete_module,m7},
+	  {delete_module,m8},
+	  {delete_module,m9},
+	  {delete_module,m10}]}],
+ [{"1.0",[{update,m},
+	  {add_module,m1},
+	  {add_module,m2},
+	  {add_module,m3},
+	  {add_module,m4},
+	  {add_module,m5},
+	  {add_module,m6},
+	  {add_module,m7},
+	  {add_module,m8},
+	  {add_module,m9},
+	  {add_module,m10}]}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-2.0/src/m.erl b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-2.0/src/m.erl
new file mode 100644
index 0000000000..2edc1e6be4
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/lib/many_mods-2.0/src/m.erl
@@ -0,0 +1,11 @@
+-module(m).
+-compile(export_all).
+
+start(NProcs) ->
+    Modules = [],
+    Pids = [spawn_link(fun() ->
+			       Cs = [M:bar() || M <- Modules],
+			       receive stop -> Cs end
+		       end) ||
+	       _ <- lists:seq(1,NProcs)],
+    {Modules,Pids}.