Merge branch 'hans/ssh/benchmarks'

Old ssh_benchmark_SUITE was very resource demanding.  The new
ssh_bench_SUITE is start of a new way to measure.

24 files changed, 316 insertions, 574 deletions

diff --git a/lib/ssh/test/Makefile b/lib/ssh/test/Makefile
index 3fca78237c..fab79a7a43 100644
--- a/lib/ssh/test/Makefile
+++ b/lib/ssh/test/Makefile
@@ -36,7 +36,7 @@ MODULES= \
 	ssh_options_SUITE \
 	ssh_renegotiate_SUITE \
 	ssh_basic_SUITE \
-	ssh_benchmark_SUITE \
+	ssh_bench_SUITE \
 	ssh_connection_SUITE \
 	ssh_protocol_SUITE \
 	ssh_sftp_SUITE \
@@ -50,6 +50,7 @@ MODULES= \
 	ssh_key_cb_options \
 	ssh_trpt_test_lib \
 	ssh_echo_server \
+	ssh_bench_dev_null \
 	ssh_peername_sockname_server \
 	ssh_test_cli \
 	ssh_relay \
diff --git a/lib/ssh/test/ssh.spec b/lib/ssh/test/ssh.spec
index 0076fc275e..68268cb20d 100644
--- a/lib/ssh/test/ssh.spec
+++ b/lib/ssh/test/ssh.spec
@@ -1,6 +1,7 @@
 {suites,"../ssh_test",all}.
 
-{skip_suites, "../ssh_test", [ssh_benchmark_SUITE],
+{skip_suites, "../ssh_test", [ssh_bench_SUITE
+                             ],
  "Benchmarks run separately"}.
 
 
diff --git a/lib/ssh/test/ssh_bench.spec b/lib/ssh/test/ssh_bench.spec
index 029f0bd074..b0b64713cf 100644
--- a/lib/ssh/test/ssh_bench.spec
+++ b/lib/ssh/test/ssh_bench.spec
@@ -1 +1,2 @@
-{suites,"../ssh_test",[ssh_benchmark_SUITE]}.
+{suites,"../ssh_test",[ssh_bench_SUITE
+	              ]}.
diff --git a/lib/ssh/test/ssh_bench_SUITE.erl b/lib/ssh/test/ssh_bench_SUITE.erl
new file mode 100644
index 0000000000..ac52bb7e28
--- /dev/null
+++ b/lib/ssh/test/ssh_bench_SUITE.erl
@@ -0,0 +1,252 @@
+%%%-------------------------------------------------------------------
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2015-2016. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(ssh_bench_SUITE).
+-compile(export_all).
+
+-include_lib("common_test/include/ct_event.hrl").
+-include_lib("common_test/include/ct.hrl").
+
+-include_lib("ssh/src/ssh.hrl").
+-include_lib("ssh/src/ssh_transport.hrl").
+-include_lib("ssh/src/ssh_connect.hrl").
+-include_lib("ssh/src/ssh_userauth.hrl").
+
+%%%================================================================
+%%%
+%%% Suite declarations
+%%% 
+
+suite() -> [{ct_hooks,[{ts_install_cth,[{nodenames,2}]}]},
+	    {timetrap,{minutes,1}}
+	   ].
+all() -> [connect,
+          transfer_text
+	 ].
+
+-define(UID, "foo").
+-define(PWD, "bar").
+-define(Nruns, 8).
+
+%%%================================================================
+%%%
+%%% Init per suite
+%%% 
+
+init_per_suite(Config) ->
+    catch ssh:stop(),
+    try 
+	ok = ssh:start()
+    of
+        ok ->
+            DataSize = 1000000,
+            SystemDir = proplists:get_value(data_dir, Config),
+            Algs = insert_none(ssh:default_algorithms()),
+            {_ServerPid, _Host, Port} =
+                ssh_test_lib:daemon([{system_dir, SystemDir},
+                                     {user_passwords, [{?UID,?PWD}]},
+                                     {failfun, fun ssh_test_lib:failfun/2},
+                                     {preferred_algorithms, Algs},
+                                     {max_random_length_padding, 0},
+                                     {subsystems, [{"/dev/null", {ssh_bench_dev_null,[DataSize]}}]}
+                                    ]),
+            [{host,"localhost"}, {port,Port}, {uid,?UID}, {pwd,?PWD}, {data_size,DataSize} | Config]
+    catch
+	C:E ->
+	    {skip, io_lib:format("Couldn't start ~p:~p",[C,E])}
+    end.
+    
+end_per_suite(_Config) ->
+    catch ssh:stop(),
+    ok.
+
+%%%================================================================
+%%%
+%%% Init per testcase
+%%% 
+
+init_per_testcase(_Func, Conf) ->
+    Conf.
+
+end_per_testcase(_Func, _Conf) ->
+    ok.
+
+%%%================================================================
+%%%
+%%% Testcases
+%%%
+
+%%%----------------------------------------------------------------
+%%% Measure the time for an Erlang client to connect to an Erlang
+%%% server on the localhost
+
+connect(Config) ->
+    KexAlgs = proplists:get_value(kex, ssh:default_algorithms()),
+    ct:pal("KexAlgs = ~p",[KexAlgs]),
+    lists:foreach(
+      fun(KexAlg) ->
+              PrefAlgs = preferred_algorithms(KexAlg),
+              report([{value, measure_connect(Config,
+                                              [{preferred_algorithms,PrefAlgs}])},
+                      {suite, ?MODULE},
+                      {name, mk_name(["Connect erlc erld ",KexAlg," [µs]"])}
+                     ])
+      end, KexAlgs).
+
+
+measure_connect(Config, Opts) ->
+    Port = proplists:get_value(port, Config),
+    ConnectOptions = [{user,     proplists:get_value(uid,      Config)},
+                      {password, proplists:get_value(pwd,      Config)},
+                      {user_dir, proplists:get_value(priv_dir, Config)},
+                      {silently_accept_hosts, true},
+                      {user_interaction, false},
+                      {max_random_length_padding, 0}
+                     ] ++ Opts,
+    median(
+      [begin
+           {Time, {ok,Pid}} = timer:tc(ssh,connect,["localhost", Port, ConnectOptions]),
+           ssh:close(Pid),
+           Time
+       end || _ <- lists:seq(1,?Nruns)]).
+
+%%%----------------------------------------------------------------
+%%% Measure the time to transfer a set of data with
+%%% and without crypto
+
+transfer_text(Config) ->
+    Port = proplists:get_value(port, Config),
+    Options = [{user,     proplists:get_value(uid,      Config)},
+               {password, proplists:get_value(pwd,      Config)},
+               {user_dir, proplists:get_value(priv_dir, Config)},
+               {silently_accept_hosts, true},
+               {user_interaction, false},
+               {max_random_length_padding, 0}
+              ],
+    Data = gen_data(proplists:get_value(data_size,Config)),
+
+    [connect_measure(Port, Crypto, Mac, Data, Options)
+     || {Crypto,Mac} <- [{        none,                    none},
+                         {'aes128-ctr',             'hmac-sha1'},
+                         {'aes256-ctr',             'hmac-sha1'},
+%%                         {'[email protected]', 'hmac-sha1'},
+                         {'aes128-cbc',             'hmac-sha1'},
+                         {'3des-cbc',               'hmac-sha1'},
+                         {'aes128-ctr',             'hmac-sha2-256'},
+                         {'aes128-ctr',             'hmac-sha2-512'}
+                        ],
+        crypto_mac_supported(Crypto,Mac)].
+    
+
+crypto_mac_supported(none, none) ->
+    true;
+crypto_mac_supported(C, M) -> 
+    Algs = ssh:default_algorithms(),
+    [{_,Cs},_] = proplists:get_value(cipher, Algs),
+    [{_,Ms},_] = proplists:get_value(mac, Algs),
+    lists:member(C,Cs) andalso lists:member(M,Ms).
+    
+
+gen_data(DataSz) ->
+    Data0 = << <<C>> || _ <- lists:seq(1,DataSz div 256),
+                        C <- lists:seq(0,255) >>,
+    Data1 = << <<C>> || C <- lists:seq(0,(DataSz rem 256) - 1) >>,
+    <<Data0/binary, Data1/binary>>.
+
+
+%% connect_measure(Port, Cipher, Mac, Data, Options) ->
+%%     report([{value, 1},
+%%              {suite, ?MODULE},
+%%              {name, mk_name(["Transfer 1M bytes ",Cipher,"/",Mac," [µs]"])}]);
+connect_measure(Port, Cipher, Mac, Data, Options) ->
+    Times =
+        [begin
+             {ok,C} = ssh:connect("localhost", Port, [{preferred_algorithms, [{cipher,[Cipher]},
+                                                                              {mac,[Mac]}]}
+                                                      |Options]),
+             {ok,Ch} = ssh_connection:session_channel(C, 10000),
+             success = ssh_connection:subsystem(C, Ch, "/dev/null", 10000),
+             {Time,ok} = timer:tc(?MODULE, send_wait_acc, [C, Ch, Data]),
+             ok = ssh_connection:send_eof(C, Ch),
+             ssh:close(C),
+             Time
+         end || _ <- lists:seq(1,?Nruns)],
+    
+    report([{value, median(Times)},
+            {suite, ?MODULE},
+            {name, mk_name(["Transfer 1M bytes ",Cipher,"/",Mac," [µs]"])}]).
+
+send_wait_acc(C, Ch, Data) ->
+    ssh_connection:send(C, Ch, Data),
+    receive
+        {ssh_cm, C, {data, Ch, 0, <<"READY">>}} -> ok
+    end.
+            
+
+%%%================================================================
+%%%
+%%% Private
+%%% 
+
+%%%----------------------------------------------------------------
+insert_none(L) ->
+    lists:foldl(fun insert_none/2, [], L).
+
+insert_none({T,L}, Acc) when T==cipher ;
+                             T==mac    ->
+    [{T, [{T1,L1++[none]} || {T1,L1} <- L]} | Acc];
+insert_none(_, Acc) ->
+    Acc.
+
+%%%----------------------------------------------------------------
+mk_name(Name) -> [char(C) || C <- lists:concat(Name)].
+
+char($-) -> $_;
+char(C) -> C.
+
+%%%----------------------------------------------------------------
+preferred_algorithms(KexAlg) ->
+     [{kex,         [KexAlg]},
+      {public_key,  ['ssh-rsa']},
+      {cipher,      ['aes128-ctr']},
+      {mac,         ['hmac-sha1']},
+      {compression, [none]}
+     ].
+
+%%%----------------------------------------------------------------
+median(Data) when is_list(Data) ->
+    SortedData = lists:sort(Data),
+    N = length(Data),
+    Median =
+        case N rem 2 of
+            0 ->
+                MeanOfMiddle = (lists:nth(N div 2, SortedData) +
+                                    lists:nth(N div 2 + 1, SortedData)) / 2,
+                round(MeanOfMiddle);
+            1 ->
+                lists:nth(N div 2 + 1, SortedData)
+        end,
+    ct:pal("median(~p) = ~p",[SortedData,Median]),
+    Median.
+
+
+report(Data) ->
+    ct:pal("EventData = ~p",[Data]),
+    ct_event:notify(#event{name = benchmark_data,
+                           data = Data}).
diff --git a/lib/ssh/test/ssh_benchmark_SUITE_data/id_dsa b/lib/ssh/test/ssh_bench_SUITE_data/id_dsa
index d306f8b26e..d306f8b26e 100644
--- a/lib/ssh/test/ssh_benchmark_SUITE_data/id_dsa
+++ b/lib/ssh/test/ssh_bench_SUITE_data/id_dsa
diff --git a/lib/ssh/test/ssh_benchmark_SUITE_data/id_ecdsa256 b/lib/ssh/test/ssh_bench_SUITE_data/id_ecdsa256
index 4b1eb12eaa..4b1eb12eaa 100644
--- a/lib/ssh/test/ssh_benchmark_SUITE_data/id_ecdsa256
+++ b/lib/ssh/test/ssh_bench_SUITE_data/id_ecdsa256
diff --git a/lib/ssh/test/ssh_benchmark_SUITE_data/id_ecdsa256.pub b/lib/ssh/test/ssh_bench_SUITE_data/id_ecdsa256.pub
index a0147e60fa..a0147e60fa 100644
--- a/lib/ssh/test/ssh_benchmark_SUITE_data/id_ecdsa256.pub
+++ b/lib/ssh/test/ssh_bench_SUITE_data/id_ecdsa256.pub
diff --git a/lib/ssh/test/ssh_benchmark_SUITE_data/id_ecdsa384 b/lib/ssh/test/ssh_bench_SUITE_data/id_ecdsa384
index 4e8aa40959..4e8aa40959 100644
--- a/lib/ssh/test/ssh_benchmark_SUITE_data/id_ecdsa384
+++ b/lib/ssh/test/ssh_bench_SUITE_data/id_ecdsa384
diff --git a/lib/ssh/test/ssh_benchmark_SUITE_data/id_ecdsa384.pub b/lib/ssh/test/ssh_bench_SUITE_data/id_ecdsa384.pub
index 41e722e545..41e722e545 100644
--- a/lib/ssh/test/ssh_benchmark_SUITE_data/id_ecdsa384.pub
+++ b/lib/ssh/test/ssh_bench_SUITE_data/id_ecdsa384.pub
diff --git a/lib/ssh/test/ssh_benchmark_SUITE_data/id_ecdsa521 b/lib/ssh/test/ssh_bench_SUITE_data/id_ecdsa521
index 7196f46e97..7196f46e97 100644
--- a/lib/ssh/test/ssh_benchmark_SUITE_data/id_ecdsa521
+++ b/lib/ssh/test/ssh_bench_SUITE_data/id_ecdsa521
diff --git a/lib/ssh/test/ssh_benchmark_SUITE_data/id_ecdsa521.pub b/lib/ssh/test/ssh_bench_SUITE_data/id_ecdsa521.pub
index 8f059120bc..8f059120bc 100644
--- a/lib/ssh/test/ssh_benchmark_SUITE_data/id_ecdsa521.pub
+++ b/lib/ssh/test/ssh_bench_SUITE_data/id_ecdsa521.pub
diff --git a/lib/ssh/test/ssh_benchmark_SUITE_data/id_rsa b/lib/ssh/test/ssh_bench_SUITE_data/id_rsa
index 9d7e0dd5fb..9d7e0dd5fb 100644
--- a/lib/ssh/test/ssh_benchmark_SUITE_data/id_rsa
+++ b/lib/ssh/test/ssh_bench_SUITE_data/id_rsa
diff --git a/lib/ssh/test/ssh_benchmark_SUITE_data/ssh_host_dsa_key b/lib/ssh/test/ssh_bench_SUITE_data/ssh_host_dsa_key
index 51ab6fbd88..51ab6fbd88 100644
--- a/lib/ssh/test/ssh_benchmark_SUITE_data/ssh_host_dsa_key
+++ b/lib/ssh/test/ssh_bench_SUITE_data/ssh_host_dsa_key
diff --git a/lib/ssh/test/ssh_benchmark_SUITE_data/ssh_host_dsa_key.pub b/lib/ssh/test/ssh_bench_SUITE_data/ssh_host_dsa_key.pub
index 4dbb1305b0..4dbb1305b0 100644
--- a/lib/ssh/test/ssh_benchmark_SUITE_data/ssh_host_dsa_key.pub
+++ b/lib/ssh/test/ssh_bench_SUITE_data/ssh_host_dsa_key.pub
diff --git a/lib/ssh/test/ssh_benchmark_SUITE_data/ssh_host_ecdsa_key256 b/lib/ssh/test/ssh_bench_SUITE_data/ssh_host_ecdsa_key256
index 2979ea88ed..2979ea88ed 100644
--- a/lib/ssh/test/ssh_benchmark_SUITE_data/ssh_host_ecdsa_key256
+++ b/lib/ssh/test/ssh_bench_SUITE_data/ssh_host_ecdsa_key256
diff --git a/lib/ssh/test/ssh_benchmark_SUITE_data/ssh_host_ecdsa_key256.pub b/lib/ssh/test/ssh_bench_SUITE_data/ssh_host_ecdsa_key256.pub
index 85dc419345..85dc419345 100644
--- a/lib/ssh/test/ssh_benchmark_SUITE_data/ssh_host_ecdsa_key256.pub
+++ b/lib/ssh/test/ssh_bench_SUITE_data/ssh_host_ecdsa_key256.pub
diff --git a/lib/ssh/test/ssh_benchmark_SUITE_data/ssh_host_ecdsa_key384 b/lib/ssh/test/ssh_bench_SUITE_data/ssh_host_ecdsa_key384
index fb1a862ded..fb1a862ded 100644
--- a/lib/ssh/test/ssh_benchmark_SUITE_data/ssh_host_ecdsa_key384
+++ b/lib/ssh/test/ssh_bench_SUITE_data/ssh_host_ecdsa_key384
diff --git a/lib/ssh/test/ssh_benchmark_SUITE_data/ssh_host_ecdsa_key384.pub b/lib/ssh/test/ssh_bench_SUITE_data/ssh_host_ecdsa_key384.pub
index 428d5fb7d7..428d5fb7d7 100644
--- a/lib/ssh/test/ssh_benchmark_SUITE_data/ssh_host_ecdsa_key384.pub
+++ b/lib/ssh/test/ssh_bench_SUITE_data/ssh_host_ecdsa_key384.pub
diff --git a/lib/ssh/test/ssh_benchmark_SUITE_data/ssh_host_ecdsa_key521 b/lib/ssh/test/ssh_bench_SUITE_data/ssh_host_ecdsa_key521
index 3e51ec2ecd..3e51ec2ecd 100644
--- a/lib/ssh/test/ssh_benchmark_SUITE_data/ssh_host_ecdsa_key521
+++ b/lib/ssh/test/ssh_bench_SUITE_data/ssh_host_ecdsa_key521
diff --git a/lib/ssh/test/ssh_benchmark_SUITE_data/ssh_host_ecdsa_key521.pub b/lib/ssh/test/ssh_bench_SUITE_data/ssh_host_ecdsa_key521.pub
index 017a29f4da..017a29f4da 100644
--- a/lib/ssh/test/ssh_benchmark_SUITE_data/ssh_host_ecdsa_key521.pub
+++ b/lib/ssh/test/ssh_bench_SUITE_data/ssh_host_ecdsa_key521.pub
diff --git a/lib/ssh/test/ssh_benchmark_SUITE_data/ssh_host_rsa_key b/lib/ssh/test/ssh_bench_SUITE_data/ssh_host_rsa_key
index 79968bdd7d..79968bdd7d 100644
--- a/lib/ssh/test/ssh_benchmark_SUITE_data/ssh_host_rsa_key
+++ b/lib/ssh/test/ssh_bench_SUITE_data/ssh_host_rsa_key
diff --git a/lib/ssh/test/ssh_benchmark_SUITE_data/ssh_host_rsa_key.pub b/lib/ssh/test/ssh_bench_SUITE_data/ssh_host_rsa_key.pub
index 75d2025c71..75d2025c71 100644
--- a/lib/ssh/test/ssh_benchmark_SUITE_data/ssh_host_rsa_key.pub
+++ b/lib/ssh/test/ssh_bench_SUITE_data/ssh_host_rsa_key.pub
diff --git a/lib/ssh/test/ssh_bench_dev_null.erl b/lib/ssh/test/ssh_bench_dev_null.erl
new file mode 100644
index 0000000000..0e390b7712
--- /dev/null
+++ b/lib/ssh/test/ssh_bench_dev_null.erl
@@ -0,0 +1,58 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2005-2016. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%%
+
+%%% Description: Example ssh server
+-module(ssh_bench_dev_null).
+-behaviour(ssh_daemon_channel).
+
+-record(state, {
+          cm,
+          chid,
+          n,
+          sum = 0
+	 }).
+
+-export([init/1, handle_msg/2, handle_ssh_msg/2, terminate/2]).
+
+init([N]) -> {ok, #state{n=N}}.
+
+handle_msg({ssh_channel_up, ChId, CM}, S) -> 
+    {ok, S#state{cm = CM,
+                 chid = ChId}}.
+
+
+
+handle_ssh_msg({ssh_cm, CM, {data,ChId,0,Data}}, #state{n=N, sum=Sum0, cm=CM, chid=ChId} = S) -> 
+    Sum = Sum0 + size(Data),
+    if Sum == N ->
+            %% Got all
+            ssh_connection:send(CM, ChId, <<"READY">>),
+            {ok, S#state{sum=Sum}};
+       Sum < N ->
+            %% Expects more
+            {ok, S#state{sum=Sum}}
+    end;
+handle_ssh_msg({ssh_cm, _, {exit_signal,ChId,_,_,_}}, S) -> {stop, ChId, S};
+handle_ssh_msg({ssh_cm, _, {exit_status,ChId,_}    }, S) -> {stop, ChId, S};
+handle_ssh_msg({ssh_cm, _, _                       }, S) -> {ok, S}.
+
+terminate(_, _) -> ok.
diff --git a/lib/ssh/test/ssh_benchmark_SUITE.erl b/lib/ssh/test/ssh_benchmark_SUITE.erl
deleted file mode 100644
index fc90750455..0000000000
--- a/lib/ssh/test/ssh_benchmark_SUITE.erl
+++ /dev/null
@@ -1,571 +0,0 @@
-%%%-------------------------------------------------------------------
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 2015-2016. All Rights Reserved.
-%%
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%%     http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%%
-%% %CopyrightEnd%
-%%
--module(ssh_benchmark_SUITE).
--compile(export_all).
-
--include_lib("common_test/include/ct_event.hrl").
--include_lib("common_test/include/ct.hrl").
-
--include_lib("ssh/src/ssh.hrl").
--include_lib("ssh/src/ssh_transport.hrl").
--include_lib("ssh/src/ssh_connect.hrl").
--include_lib("ssh/src/ssh_userauth.hrl").
-
-
-suite() -> [{ct_hooks,[{ts_install_cth,[{nodenames,2}]}]},
-	    {timetrap,{minutes,6}}
-	   ].
-%%suite() -> [{ct_hooks,[ts_install_cth]}].
-
-all() -> [{group, opensshc_erld} 
-%%	  {group, erlc_opensshd}
-	 ].
-
-groups() ->
-    [{opensshc_erld, [{repeat, 3}], [openssh_client_shell,
-				     openssh_client_sftp]}
-    ].
-
-
-init_per_suite(Config) ->
-    catch ssh:stop(),
-    try 
-	report_client_algorithms(),
-	ok = ssh:start(),
-	{ok,TracerPid} = erlang_trace(),
-	[{tracer_pid,TracerPid} | init_sftp_dirs(Config)]
-    catch
-	C:E ->
-	    {skip, io_lib:format("Couldn't start ~p:~p",[C,E])}
-    end.
-    
-end_per_suite(_Config) ->
-    catch ssh:stop(),
-    ok.
-
-
-
-init_per_group(opensshc_erld, Config) ->
-    case ssh_test_lib:ssh_type() of
-	openSSH -> 
-	    DataDir = proplists:get_value(data_dir, Config),
-	    UserDir = proplists:get_value(priv_dir, Config),
-	    ssh_test_lib:setup_dsa(DataDir, UserDir),
-	    ssh_test_lib:setup_rsa(DataDir, UserDir),
-	    ssh_test_lib:setup_ecdsa("256", DataDir, UserDir),
-            AlgsD = ssh:default_algorithms(),
-            AlgsC = ssh_test_lib:default_algorithms(sshc),
-	    Common = ssh_test_lib:intersect_bi_dir(
-		       ssh_test_lib:intersection(AlgsD, AlgsC)),
-            ct:pal("~p~n~nErld:~n~p~n~nOpenSSHc:~n~p~n~nCommon:~n~p",
-                   [inet:gethostname(), AlgsD, AlgsC, Common]),
-	    [{c_kexs, ssh_test_lib:sshc(kex)},
-	     {c_ciphers, ssh_test_lib:sshc(cipher)},
-	     {common_algs, Common}
-	     | Config];
-	_ -> 
-	    {skip, "No OpenSsh client found"}
-    end;
-		       
-init_per_group(erlc_opensshd, _) ->
-    {skip, "Group erlc_opensshd not implemented"};
-
-init_per_group(_GroupName, Config) ->
-    Config.
-
-end_per_group(_GroupName, _Config) ->
-    ok.
-
-
-init_per_testcase(_Func, Conf) ->
-    Conf.
-
-end_per_testcase(_Func, _Conf) ->
-    ok.
-
-
-init_sftp_dirs(Config) ->
-    UserDir = proplists:get_value(priv_dir, Config),
-    SrcDir = filename:join(UserDir, "sftp_src"),
-    ok = file:make_dir(SrcDir),
-    SrcFile = "big_data",
-    DstDir = filename:join(UserDir, "sftp_dst"),
-    ok = file:make_dir(DstDir),
-    N = 100 * 1024*1024,
-    ok = file:write_file(filename:join(SrcDir,SrcFile), crypto:strong_rand_bytes(N)),
-    [{sftp_src_dir,SrcDir}, {sftp_dst_dir,DstDir}, {src_file,SrcFile}, {sftp_size,N}
-     | Config].
-
-%%%================================================================
-openssh_client_shell(Config) ->
-    lists:foreach(
-      fun(PrefAlgs=[{kex,[Kex]}]) when Kex == 'diffie-hellman-group-exchange-sha256' ->
-	      lists:foreach(
-		fun(Grp) ->
-			openssh_client_shell(Config, 
-					     [{preferred_algorithms, PrefAlgs},
-					      {dh_gex_groups, [Grp]}
-					     ])
-		end, moduli());
-	 (PrefAlgs) -> 
-	      openssh_client_shell(Config, 
-				   [{preferred_algorithms, PrefAlgs}])
-      end, variants(kex,Config) ++ variants(cipher,Config)
-     ).
-    
-
-openssh_client_shell(Config, Options) ->
-    SystemDir = proplists:get_value(data_dir, Config),
-    UserDir = proplists:get_value(priv_dir, Config),
-    KnownHosts = filename:join(UserDir, "known_hosts"),
-    
-    {ok, TracerPid} = erlang_trace(),
-    {ServerPid, _Host, Port} =
-	ssh_test_lib:daemon([{system_dir, SystemDir},
-			     {failfun, fun ssh_test_lib:failfun/2} |
-			     Options]),
-    ct:sleep(500),
-
-    Data = lists:duplicate(100000, $a),
-    Cmd = lists:concat(["ssh -p ",Port,
-			" -o UserKnownHostsFile=", KnownHosts,
-			" -o \"StrictHostKeyChecking no\"",
-			" localhost '\"",Data,"\"'."]),
-%%    ct:pal("Cmd ="++Cmd),
-
-    Parent = self(),
-    SlavePid = spawn(fun() ->
-			     Parent ! {self(),os:cmd(Cmd)}
-		     end),
-    receive
-	{SlavePid, _ClientResponse} ->
-%%	    ct:pal("ClientResponse = ~p",[_ClientResponse]),
-	    {ok, List} = get_trace_list(TracerPid),
-	    Times = find_times(List, [accept_to_hello, kex, kex_to_auth, auth, to_prompt]),
-	    Algs = find_algs(List),
-	    ct:pal("Algorithms = ~p~n~nTimes = ~p",[Algs,Times]),
-	    lists:foreach(
-	      fun({Tag,Value,Unit}) ->
-		      EventData =
-			  case Tag of
-			      {A,B} when A==encrypt ; A==decrypt -> 
-				  [{value, Value},
-				   {suite, ?MODULE}, 
-				   {name, mk_name(["Cipher ",A," ",B," [",Unit,"]"])}
-				  ];
-			      kex ->
-				  KexAlgStr = fmt_alg(Algs#alg.kex, List),
-				  [{value, Value},
-				   {suite, ?MODULE}, 
-				   {name, mk_name(["Erl server kex ",KexAlgStr," [",Unit,"]"])}
-				  ];
-			      _ when is_atom(Tag) ->
-				  [{value, Value},
-				   {suite, ?MODULE}, 
-				   {name, mk_name(["Erl server ",Tag," [",Unit,"]"])}
-				  ]
-			  end,
-		      ct:pal("ct_event:notify ~p",[EventData]),
-		      ct_event:notify(#event{name = benchmark_data,
-					     data = EventData})
-	      end, Times),
-	    ssh:stop_daemon(ServerPid),
-	    ok
-    after 60*1000 ->
-	    ssh:stop_daemon(ServerPid),
-	    exit(SlavePid, kill),
-	    {fail, timeout}
-    end.
-
-
-%%%================================================================
-openssh_client_sftp(Config) ->
-    lists:foreach(
-      fun(PrefAlgs) -> 
-	      openssh_client_sftp(Config, [{preferred_algorithms,PrefAlgs}])
-      end, variants(cipher,Config)).
-
-
-openssh_client_sftp(Config, Options) ->
-    SystemDir = proplists:get_value(data_dir, Config),
-    UserDir = proplists:get_value(priv_dir, Config),
-    SftpSrcDir = proplists:get_value(sftp_src_dir, Config),
-    SrcFile = proplists:get_value(src_file, Config),
-    SrcSize = proplists:get_value(sftp_size, Config),
-    KnownHosts = filename:join(UserDir, "known_hosts"),
-
-    {ok, TracerPid} = erlang_trace(),
-    {ServerPid, _Host, Port} =
-	ssh_test_lib:daemon([{system_dir, SystemDir},
-			     {subsystems,[ssh_sftpd:subsystem_spec([%{cwd,  SftpSrcDir},
-								    {root, SftpSrcDir}])]},
-			     {failfun, fun ssh_test_lib:failfun/2} 
-			     | Options]),
-    ct:pal("ServerPid = ~p",[ServerPid]),
-    ct:sleep(500),
-    Cmd = lists:concat(["sftp",
-			" -b -",
-			" -P ",Port,
-			" -o UserKnownHostsFile=", KnownHosts,
-			" -o \"StrictHostKeyChecking no\"",
-			" localhost:",SrcFile
-		       ]),
-%%    ct:pal("Cmd = ~p",[Cmd]),
-    
-    Parent = self(),
-    SlavePid = spawn(fun() ->
-			     Parent ! {self(),os:cmd(Cmd)}
-		     end),
-    receive
-	{SlavePid, _ClientResponse} ->
-	    ct:pal("ClientResponse = ~p~nServerPid = ~p",[_ClientResponse,ServerPid]),
-	    {ok, List} = get_trace_list(TracerPid),
-%%ct:pal("List=~p",[List]),
-	    Times = find_times(List, [channel_open_close]),
-	    Algs = find_algs(List),
-	    ct:pal("Algorithms = ~p~n~nTimes = ~p",[Algs,Times]),
-	    lists:foreach(
-	      fun({{A,B},Value,Unit}) when A==encrypt ; A==decrypt -> 
-		      Data = [{value, Value},
-			      {suite, ?MODULE}, 
-			      {name, mk_name(["Sftp Cipher ",A," ",B," [",Unit,"]"])}
-			     ],
-		      ct:pal("sftp ct_event:notify ~p",[Data]),
-		      ct_event:notify(#event{name = benchmark_data,
-					     data = Data});
-		 ({channel_open_close,Value,Unit}) ->
-		      Cipher = fmt_alg(Algs#alg.encrypt, List),
-		      Data = [{value, round( (1024*Value) / SrcSize )},
-			      {suite, ?MODULE}, 
-			      {name, mk_name(["Sftp transfer ",Cipher," [",Unit," per kbyte]"])}
-			     ],
-		      ct:pal("sftp ct_event:notify ~p",[Data]),
-		      ct_event:notify(#event{name = benchmark_data,
-					     data = Data});
-		 (_) ->
-		      skip
-	      end, Times),
-	    ssh:stop_daemon(ServerPid),
-	    ok
-    after 2*60*1000 ->
-	    ssh:stop_daemon(ServerPid),
-	    exit(SlavePid, kill),
-	    {fail, timeout}
-    end.
-
-%%%================================================================
-variants(Tag, Config) ->
-    TagType =
-	case proplists:get_value(Tag, ssh:default_algorithms()) of
-	    [{_,_}|_] -> one_way;
-	    [A|_] when is_atom(A) -> two_way
-	end,
-    [ [{Tag,tag_value(TagType,Alg)}]
-      || Alg <- proplists:get_value(Tag, proplists:get_value(common_algs,Config))
-    ].
-
-tag_value(two_way, Alg) -> [Alg];
-tag_value(one_way, Alg) -> [{client2server,[Alg]},
-			    {server2client,[Alg]}].
-    
-%%%----------------------------------------------------------------
-fmt_alg(Alg, List) when is_atom(Alg) ->
-    fmt_alg(atom_to_list(Alg), List);
-fmt_alg(Alg = "diffie-hellman-group-exchange-sha" ++ _, List) ->
-    try 
-	integer_to_list(find_gex_size_string(List))
-    of
-	GexSize -> lists:concat([Alg," ",GexSize])
-    catch
-	_:_ -> Alg
-    end;
-fmt_alg(Alg, _List) ->
-    Alg.
-
-%%%----------------------------------------------------------------
-mk_name(Name) -> [char(C) || C <- lists:concat(Name)].
-
-char($-) -> $_;
-char(C) -> C.
-
-%%%----------------------------------------------------------------
-find_times(L, Xs) ->
-    [find_time(X,L) || X <- Xs]	++
-	function_algs_times_sizes([{ssh_transport,encrypt,2},
-				   {ssh_transport,decrypt,2},
-				   {ssh_message,decode,1},
-				   {ssh_message,encode,1}], L).
-
--record(call, {
-	  mfa,
-	  pid,
-	  t_call,
-	  t_return,
-	  args,
-	  result
-	 }).
-
-%%%----------------
--define(send(M), fun(C=#call{mfa = {ssh_message,encode,1},
-			     args = [M]}) ->
-			 C#call.t_return
-		 end).
-
--define(recv(M), fun(C=#call{mfa = {ssh_message,decode,1},
-			     result = M}) ->
-			    C#call.t_call
-		 end).
-
-find_time(accept_to_hello, L) ->
-    [T0,T1] = find([fun(C=#call{mfa = {ssh_acceptor,handle_connection,5}}) ->
-			    C#call.t_call
-		    end,
-		    ?LINE,
-		    fun(C=#call{mfa = {ssh_connection_handler,handle_event,4},
-				args = [_, {version_exchange,_}, {hello,_}, _]}) ->
-			    C#call.t_call
-		    end,
-		    ?LINE
-		   ], L, []),
-    {accept_to_hello, now2micro_sec(now_diff(T1,T0)), microsec};
-find_time(kex, L) ->
-    [T0,T1] = find([fun(C=#call{mfa = {ssh_connection_handler,handle_event,4},
-				args = [_, {version_exchange,_}, {hello,_}, _]}) ->
-			    C#call.t_call
-		    end,
-		    ?LINE,
-		    ?send(#ssh_msg_newkeys{}),
-		    ?LINE
-		    ], L, []),
-    {kex, now2micro_sec(now_diff(T1,T0)), microsec};
-find_time(kex_to_auth, L) ->
-    [T0,T1] = find([?send(#ssh_msg_newkeys{}),
-		    ?LINE,
-		    ?recv(#ssh_msg_userauth_request{}),
-		    ?LINE
-		   ], L, []),
-    {kex_to_auth, now2micro_sec(now_diff(T1,T0)), microsec};
-find_time(auth, L) ->
-    [T0,T1] = find([?recv(#ssh_msg_userauth_request{}),
-		    ?LINE,
-		    ?send(#ssh_msg_userauth_success{}),
-		    ?LINE
-		   ], L, []),
-    {auth, now2micro_sec(now_diff(T1,T0)), microsec};
-find_time(to_prompt, L) ->
-    [T0,T1] = find([fun(C=#call{mfa = {ssh_acceptor,handle_connection,5}}) ->
-			    C#call.t_call
-		    end,
-		    ?LINE,
-		    ?recv(#ssh_msg_channel_request{request_type="env"}),
-		    ?LINE
-		   ], L, []),
-    {to_prompt, now2micro_sec(now_diff(T1,T0)), microsec};
-find_time(channel_open_close, L) ->
-    [T0,T1] = find([?recv(#ssh_msg_channel_request{request_type="subsystem"}),
-		    ?LINE,
-		    ?send(#ssh_msg_channel_close{}),
-		    ?LINE
-		   ], L, []),
-    {channel_open_close, now2micro_sec(now_diff(T1,T0)), microsec}.
- 
-
-
-find([F,Id|Fs], [C|Cs], Acc) when is_function(F,1) ->
-    try
-	F(C)
-    of
-	T -> find(Fs, Cs, [T|Acc])
-    catch
-	_:_ -> find([F,Id|Fs], Cs, Acc)
-    end;
-find([], _, Acc) ->
-    lists:reverse(Acc).
-
-
-find_algs(L) ->
-    {value, #call{result={ok,Algs}}} =
-	lists:keysearch({ssh_transport,select_algorithm,3}, #call.mfa, L),
-    Algs.
-
-find_gex_size_string(L) ->
-    %% server
-    {value, #call{result={ok,{Size, _}}}} =
-	lists:keysearch({public_key,dh_gex_group,4}, #call.mfa, L),
-    Size.
-
-%%%----------------
-function_algs_times_sizes(EncDecs, L) ->
-    Raw = [begin
-	       {Tag,Size} = function_ats_result(EncDec, C),
-	       {Tag, Size, now2micro_sec(now_diff(T1,T0))}
-	   end
-	   || EncDec <- EncDecs,
-	      C = #call{mfa = ED,
-			% args = Args,  %%[S,Data],
-			t_call = T0,
-			t_return = T1} <- L,
-	      ED == EncDec
-	  ],
-    [{Alg, round(1024*Time/Size), "microsec per kbyte"}  % Microseconds per 1k bytes.
-     || {Alg,Size,Time} <- lists:foldl(fun increment/2, [], Raw)].
-
-function_ats_result({ssh_transport,encrypt,2}, #call{args=[S,Data]}) ->
-    {{encrypt,S#ssh.encrypt}, binsize(Data)};
-function_ats_result({ssh_transport,decrypt,2}, #call{args=[S,Data]}) ->
-    {{decrypt,S#ssh.decrypt}, binsize(Data)};
-function_ats_result({ssh_message,encode,1}, #call{result=Data}) ->
-    {encode, size(Data)};
-function_ats_result({ssh_message,decode,1}, #call{args=[Data]}) ->
-    {decode, size(Data)}.
-
-binsize(B) when is_binary(B) -> size(B);
-binsize({B1,B2}) when is_binary(B1), is_binary(B2) -> size(B1) + size(B2);
-binsize({B1,B2,_}) when is_binary(B1), is_binary(B2) -> size(B1) + size(B2).
-                         
-                          
-    
-    
-
-increment({Alg,Sz,T}, [{Alg,SumSz,SumT}|Acc]) ->
-    [{Alg,SumSz+Sz,SumT+T} | Acc];
-increment(Spec, [X|Acc]) ->
-    [X | increment(Spec,Acc)]; % Not so many Alg, 2 or 3
-increment({Alg,Sz,T},[]) ->
-    [{Alg,Sz,T}].
-
-%%%----------------------------------------------------------------
-%%%
-%%% API for the traceing
-%%% 
-get_trace_list(TracerPid) ->
-    MonRef = monitor(process, TracerPid),
-    TracerPid ! {get_trace_list,self()},
-    receive
-	{trace_list,L} ->
-	    demonitor(MonRef),
-	    {ok, pair_events(lists:reverse(L))};
-	{'DOWN', MonRef, process, TracerPid, Info} ->
-	    {error, {tracer_down,Info}}
-			      
-    after 3*60*1000 -> 
-	    demonitor(MonRef),
-	    {error,no_reply}
-    end.
-
-erlang_trace() ->
-    TracerPid = spawn(fun trace_loop/0),
-    0 = erlang:trace(new, true, [call,timestamp,{tracer,TracerPid}]),
-    [init_trace(MFA, tp(MFA))
-     || MFA <- [{ssh_acceptor,handle_connection,5},
-%%		{ssh_connection_handler,hello,2},
-		{ssh_message,encode,1},
-		{ssh_message,decode,1},
-		{ssh_transport,select_algorithm,3},
-		{ssh_transport,encrypt,2},
-		{ssh_transport,decrypt,2},
-		{ssh_message,encode,1},
-		{ssh_message,decode,1},
-		{public_key,dh_gex_group,4} % To find dh_gex group size
-	       ]],
-    init_trace({ssh_connection_handler,handle_event,4},
-	       [{['_', {version_exchange,'_'}, {hello,'_'}, '_'],
-		 [],
-		 [return_trace]}]),
-    {ok, TracerPid}.
-
-tp({_M,_F,Arity}) ->
-    [{lists:duplicate(Arity,'_'), [], [{return_trace}]}].
-
-%%%----------------------------------------------------------------
-init_trace(MFA = {Module,_,_}, TP) ->
-    case code:is_loaded(Module) of
-	false -> code:load_file(Module);
-	_ -> ok
-    end,
-    erlang:trace_pattern(MFA, TP, [local]).
-
-    
-trace_loop() ->
-    trace_loop([]).
-
-trace_loop(L) ->
-    receive
-	{get_trace_list, From} ->
-	    From ! {trace_list, L},
-	    trace_loop(L);
-	Ev ->
-	    trace_loop([Ev|L])
-    end.
-
-pair_events(L) ->
-    pair_events(L, []).
-
-pair_events([{trace_ts,Pid,call,{M,F,Args},TS0} | L], Acc) ->
-    Arity = length(Args),
-    {ReturnValue,TS1} = find_return(Pid, {M,F,Arity}, L),
-    pair_events(L, [#call{mfa = {M,F,Arity},
-			  pid = Pid,
-			  t_call = TS0,
-			  t_return = TS1,
-			  args = Args,
-			  result = ReturnValue} | Acc]);
-pair_events([_|L], Acc) ->
-    pair_events(L, Acc);
-pair_events([], Acc) ->
-    lists:reverse(Acc).
-
-
-find_return(Pid, MFA, 
-	    [{trace_ts, Pid, return_from, MFA, ReturnValue, TS}|_]) ->
-    {ReturnValue, TS};
-find_return(Pid, MFA, [_|L]) ->
-    find_return(Pid, MFA, L);
-find_return(_, _, []) ->
-    {undefined, undefined}.
-
-%%%----------------------------------------------------------------
-report_client_algorithms() ->
-    try
-	ssh_test_lib:extract_algos( ssh_test_lib:default_algorithms(sshc) )
-    of
-	ClientAlgs ->
-	    ct:pal("The client supports:~n~p",[ClientAlgs])
-    catch
-	Cls:Err ->
-	    ct:pal("Testing client about algorithms failed:~n~p  ~p",[Cls,Err])
-    end.
-
-%%%----------------------------------------------------------------
-
-
-now2sec({A,B,C}) -> A*1000000 + B + C/1000000.
-
-now2micro_sec({A,B,C}) -> (A*1000000 + B)*1000000 + C.
-		    
-now_diff({A1,B1,C1}, {A0,B0,C0}) -> {A1-A0, B1-B0, C1-C0}.
-
-%%%================================================================
-moduli() ->
-    [{1023, 5, 16#CF973CD39DC7D62F2C45AAC5180491104C76E0FE5D80A10E6C06AE442F1F373167B0FCBC931F3C157B10A5557008FDE20D68051E6A4DB11CEE0B0749F76D7134B937A59DA998C42BC234A5C1A3CFCD70E624D253D7694076F7B1FD7B8D3427849C9377B3555796ACA58C69DFF542EEEC9859D3ADCE5CC88DF6F7817C9D182EB7},
-     {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},
-     {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},
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