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-rw-r--r--lib/megaco/test/megaco_profile.erl343
1 files changed, 258 insertions, 85 deletions
diff --git a/lib/megaco/test/megaco_profile.erl b/lib/megaco/test/megaco_profile.erl
index d0b62610e1..fd72604e92 100644
--- a/lib/megaco/test/megaco_profile.erl
+++ b/lib/megaco/test/megaco_profile.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2008-2010. All Rights Reserved.
+%% Copyright Ericsson AB 2008-2011. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
@@ -24,50 +24,102 @@
-module(megaco_profile).
--export([profile/2]).
-
+-export([profile/2, prepare/2, analyse/1,
+ fprof_to_calltree/1, fprof_to_calltree/2, fprof_to_calltree/3]).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Execute Fun and profile it with fprof.
-profile(Slogan, Fun) when is_function(Fun) ->
+profile(Slogan, Fun) when is_function(Fun, 0) ->
Pids = [self()],
- profile(Slogan, Fun, Pids).
+ {ok, TraceFile} = prepare(Slogan, Pids),
+ Res = (catch Fun()),
+ {ok, _DestFile} = analyse(Slogan),
+ ok = file:delete(TraceFile),
+ {ok, _TreeFile} = fprof_to_calltree(Slogan),
+ Res.
-profile(Slogan, Fun, Pids) ->
+%% Prepare for tracing
+prepare(Slogan, Pids) ->
TraceFile = lists:concat(["profile_", Slogan, "-fprof.trace"]),
- DestFile = lists:concat(["profile_", Slogan, ".fprof"]),
- TreeFile = lists:concat(["profile_", Slogan, ".calltree"]),
- erlang:garbage_collect(),
{ok, _Pid} = fprof:start(),
+ erlang:garbage_collect(),
TraceOpts = [start,
- {cpu_time, false},
- {procs, Pids},
- {file, TraceFile}
+ {cpu_time, false},
+ {procs, Pids},
+ {file, TraceFile}
],
- ok = fprof:trace(TraceOpts),
- Res = (catch Fun()),
- ok = fprof:trace(stop),
- ok = fprof:profile([{file, TraceFile}]),
- ok = fprof:analyse([{dest, DestFile}]),
- ok = fprof:stop(),
- ok = file:delete(TraceFile),
- reformat_total(DestFile, TreeFile),
- Res.
+ ok = fprof:trace(TraceOpts),
+ {ok, TraceFile}.
-reformat_total(FromFile, ToFile) ->
- {ok, ConsultedFromFile} = file:consult(FromFile),
- [_AnalysisOpts, [Totals] | Terms] = ConsultedFromFile,
- {totals, _, TotalAcc, _} = Totals,
+%% Stop tracing and analyse it
+analyse(Slogan) ->
+ fprof:trace(stop),
+ TraceFile = lists:concat(["profile_", Slogan, "-fprof.trace"]),
+ DestFile = lists:concat(["profile_", Slogan, ".fprof"]),
+ try
+ case fprof:profile([{file, TraceFile}]) of
+ ok ->
+ ok = fprof:analyse([{dest, DestFile}, {totals, false}]),
+ {ok, DestFile};
+ {error, Reason} ->
+ {error, Reason}
+ end
+ after
+ fprof:stop()
+ end.
+
+fprof_to_calltree(Slogan) ->
+ fprof_to_calltree(Slogan, 0).
+
+fprof_to_calltree(Slogan, MinPercent) ->
+ DestFile = lists:concat(["profile_", Slogan, ".fprof"]),
+ TreeFile = lists:concat(["profile_", Slogan, ".calltree"]),
+ fprof_to_calltree(DestFile, TreeFile, MinPercent).
+
+%% Create a calltree from an fprof file
+fprof_to_calltree(FromFile, ToFile, MinPercent) ->
+ ReplyTo = self(),
+ Ref = make_ref(),
+ spawn_link(fun() ->
+ ReplyTo ! {Ref, do_fprof_to_calltree(FromFile, ToFile, MinPercent)}
+ end),
+ wait_for_reply(Ref).
+
+wait_for_reply(Ref) ->
+ receive
+ {Ref, Res} ->
+ Res;
+ {'EXIT', normal} ->
+ wait_for_reply(Ref);
+ {'EXIT', Reason} ->
+ exit(Reason)
+ end.
+
+do_fprof_to_calltree(FromFile, ToFile, MinPercent) ->
{ok, Fd} = file:open(ToFile, [write, raw]),
- Indent = "",
- log(Fd, Indent, TotalAcc, Totals),
- Processes = split_processes(Terms, [], []),
- Reformat = fun(P) -> reformat_process(Fd, " " ++ Indent, TotalAcc, P) end,
- lists:foreach(Reformat, Processes),
- file:close(Fd).
+ {ok, ConsultedFromFile} = file:consult(FromFile),
+ [_AnalysisOpts, [_Totals] | Terms] = ConsultedFromFile,
+ Processes = split_processes(Terms, [], []),
+ Indent = "",
+ Summary = collapse_processes(Processes),
+ {_Label, _Cnt, Acc, _Own, _Roots, Details} = Summary,
+ %% log(Fd, Label, Indent, Acc, {Label, Cnt, Acc, Own}, [], 0),
+ gen_calltree(Fd, Indent, Acc, Summary, MinPercent),
+ Delim = io_lib:format("\n~80..=c\n\n", [$=]),
+ Write =
+ fun(P) ->
+ file:write(Fd, Delim),
+ gen_calltree(Fd, Indent, Acc, P, MinPercent)
+ end,
+ lists:foreach(Write, Processes),
+ file:write(Fd, Delim),
+ gen_details(Fd, Acc, Details),
+ file:close(Fd),
+ {ok, ToFile}.
+%% Split all fprof terms into a list of processes
split_processes([H | T], ProcAcc, TotalAcc) ->
if
is_tuple(H) ->
@@ -75,64 +127,185 @@ split_processes([H | T], ProcAcc, TotalAcc) ->
is_list(H), ProcAcc =:= [] ->
split_processes(T, [H], TotalAcc);
is_list(H) ->
- split_processes(T, [H], [lists:reverse(ProcAcc) | TotalAcc])
+ ProcAcc2 = rearrange_process(lists:reverse(ProcAcc)),
+ split_processes(T, [H], [ProcAcc2 | TotalAcc])
end;
split_processes([], [], TotalAcc) ->
- lists:reverse(TotalAcc);
+ lists:reverse(lists:keysort(3, TotalAcc));
split_processes([], ProcAcc, TotalAcc) ->
- lists:reverse([lists:reverse(ProcAcc) | TotalAcc]).
-
-reformat_process(Fd, Indent, TotalAcc, Terms) ->
- case Terms of
- [[{ProcLabel, _, _, _}] | All] -> ok;
- [[{ProcLabel,_,_,_} | _] | All] -> ok
- end,
- [{_, {TopKey, TopCnt, TopAcc, TopOwn}, _} | _] = All,
- Process = {ProcLabel, TopCnt, TopAcc, TopOwn},
- log(Fd, Indent, TotalAcc, Process),
- reformat_calls(Fd, " " ++ Indent, TotalAcc, TopKey, All, []).
-
-reformat_calls(Fd, Indent, TotalAcc, Key, Terms, Stack) ->
- {_CalledBy, Current, Calls} = find(Key, Terms),
- log(Fd, Indent, TotalAcc, Current),
- case lists:member(Key, Stack) of
- true ->
- ok;
- false ->
- case Key of
- {io_lib, _, _} ->
- ok;
- {disk_log, _, _} ->
- ok;
- {lists, flatten, _} ->
- ok;
- {lists, keysort, _} ->
- ok;
- _ ->
- Fun = fun({NextKey, _, _, _}) ->
- reformat_calls(Fd,
- " " ++ Indent,
- TotalAcc,
- NextKey,
- Terms,
- [Key | Stack])
- end,
- lists:foreach(Fun, Calls)
- end
+ ProcAcc2 = rearrange_process(lists:reverse(ProcAcc)),
+ lists:reverse(lists:keysort(3, [ProcAcc2 | TotalAcc])).
+
+%% Rearrange the raw process list into a more useful format
+rearrange_process([[{Label, _Cnt, _Acc, _Own} | _ ] | Details]) ->
+ do_rearrange_process(Details, Details, Label, [], []).
+
+do_rearrange_process([{CalledBy, Current, _Calls} | T], Orig, Label, Roots, Undefs) ->
+ case [{undefined, Cnt, safe_max(Acc, Own), Own} ||
+ {undefined, Cnt, Acc, Own} <- CalledBy] of
+ [] ->
+ do_rearrange_process(T, Orig, Label, Roots, Undefs);
+ NewUndefs ->
+ do_rearrange_process(T, Orig, Label, [Current | Roots], NewUndefs ++ Undefs)
+ end;
+do_rearrange_process([], Details, Label, Roots, Undefs) ->
+ [{undefined, Cnt, Acc, Own}] = collapse_calls(Undefs, []),
+ Details2 = sort_details(3, Details),
+ {Label, Cnt, Acc, Own, lists:reverse(lists:keysort(3, Roots)), Details2}.
+
+%% Compute a summary of the rearranged process info
+collapse_processes(Processes) ->
+ Headers = lists:map(fun({_L, C, A, O, _R, _D}) -> {"SUMMARY", C, A, O} end,
+ Processes),
+ [{Label, Cnt, Acc, Own}] = collapse_calls(Headers, []),
+ Details = lists:flatmap(fun({_L, _C, _A, _O, _R, D}) -> D end, Processes),
+ Details2 = do_collapse_processes(sort_details(1, Details), []),
+ Roots = lists:flatmap(fun({_L, _C, _A, _O, R, _D}) -> R end, Processes),
+ RootMFAs = lists:usort([MFA || {MFA, _, _, _} <- Roots]),
+ Roots2 = [R || RootMFA <- RootMFAs,
+ {_, {MFA, _, _, _} = R, _} <- Details2,
+ MFA =:= RootMFA],
+ Roots3 = collapse_calls(Roots2, []),
+ {Label, Cnt, Acc, Own, Roots3, Details2}.
+
+do_collapse_processes([{CalledBy1, {MFA, Cnt1, Acc1, Own1}, Calls1} | T1],
+ [{CalledBy2, {MFA, Cnt2, Acc2, Own2}, Calls2} | T2]) ->
+ Cnt = Cnt1 + Cnt2,
+ Acc = Acc1 + Acc2,
+ Own = Own1 + Own2,
+ Current = {MFA, Cnt, Acc, Own},
+ CalledBy0 = CalledBy1 ++ CalledBy2,
+ Calls0 = Calls1 ++ Calls2,
+ CalledBy = collapse_calls(lists:keysort(3, CalledBy0), []),
+ Calls = collapse_calls(lists:keysort(3, Calls0), []),
+ do_collapse_processes(T1, [{CalledBy, Current, Calls} | T2]);
+do_collapse_processes([{CalledBy, Current, Calls} | T1],
+ T2) ->
+ do_collapse_processes(T1, [{CalledBy, Current, Calls} | T2]);
+do_collapse_processes([],
+ T2) ->
+ sort_details(3, T2).
+
+%% Reverse sort on acc field
+sort_details(Pos, Details) ->
+ Pivot = fun({_CalledBy1, Current1, _Calls1},
+ {_CalledBy2, Current2, _Calls2}) ->
+ element(Pos, Current1) =< element(Pos, Current2)
+ end,
+ lists:reverse(lists:sort(Pivot, Details)).
+
+%% Compute a summary from a list of call tuples
+collapse_calls([{MFA, Cnt1, Acc1, Own1} | T1],
+ [{MFA, Cnt2, Acc2, Own2} | T2]) ->
+ Cnt = Cnt1 + Cnt2,
+ Acc = safe_sum(Acc1, Acc2),
+ Own = Own1 + Own2,
+ collapse_calls(T1, [{MFA, Cnt, Acc, Own} | T2]);
+collapse_calls([{MFA, Cnt, Acc, Own} | T1],
+ T2) ->
+ collapse_calls(T1, [{MFA, Cnt, Acc, Own} | T2]);
+collapse_calls([],
+ T2) ->
+ lists:reverse(lists:keysort(3, T2)).
+
+safe_sum(Int1, Int2) ->
+ if
+ Int1 =:= undefined -> Int2;
+ Int2 =:= undefined -> Int1;
+ true -> Int1 + Int2
+ end.
+
+safe_max(Int1, Int2) ->
+ if
+ Int1 =:= undefined ->
+ io:format("111\n", []),
+ Int2;
+ Int2 =:= undefined ->
+ io:format("222\n", []),
+ Int1;
+ Int2 > Int1 -> Int2;
+ true -> Int1
+ end.
+
+%% Compute a calltree and write it to file
+gen_calltree(Fd, Indent, TotalAcc, {Label, Cnt, Acc, Own, Roots, Details}, MinPercent) ->
+ Header = {Label, Cnt, Acc, Own},
+ MetaLabel = "Process",
+ Diff = length(Label) - length(MetaLabel),
+ IoList = io_lib:format("~s~s Lvl Pct Cnt Acc Own Calls => MFA\n",
+ [MetaLabel, lists:duplicate(Diff, $\ )]),
+ file:write(Fd, IoList),
+ log(Fd, Label, Indent, TotalAcc, Header, Roots, MinPercent),
+ NewIndent = " " ++ Indent,
+ Fun = fun({MFA, _C, _A, _O}) ->
+ [put_detail(Label, D) || D <- Details],
+ gen_calls(Fd, Label, NewIndent, TotalAcc, MFA, MinPercent)
+ end,
+ lists:foreach(Fun, Roots).
+
+gen_calls(Fd, Label, Indent, TotalAcc, MFA, MinPercent) ->
+ case get_detail(Label, MFA) of
+ {read, {_CalledBy, Current, _Calls}} ->
+ log(Fd, Label, Indent, TotalAcc, Current, -1, MinPercent);
+ {unread, {_CalledBy, Current, Calls}} ->
+ log(Fd, Label, Indent, TotalAcc, Current, Calls, MinPercent),
+ NewIndent = " " ++ Indent,
+ Fun = fun({NextMFA, _, _, _}) ->
+ gen_calls(Fd, Label, NewIndent, TotalAcc,
+ NextMFA, MinPercent)
+ end,
+ lists:foreach(Fun, Calls)
+ end.
+
+put_detail(Label, {_, {MFA, _, _, _}, _} = Detail) ->
+ put({Label, MFA}, {unread, Detail}).
+
+get_detail(Label, MFA) ->
+ Val = get({Label, MFA}),
+ case Val of
+ {unread, Detail} ->
+ put({Label, MFA}, {read, Detail}),
+ Val;
+ {read, _Detail} ->
+ Val
+ end.
+
+gen_details(Fd, Total, Details) ->
+ IoList = io_lib:format("Pct Cnt Acc Own MFA\n", []),
+ file:write(Fd, IoList),
+ do_gen_details(Fd, Total, Details).
+
+do_gen_details(Fd, Total, [{_CalledBy, {MFA, Cnt, Acc, Own}, _Calls} | Details]) ->
+ MFAStr = io_lib:format("~p", [MFA]),
+ {_, Percent} = calc_percent(Acc, Own, Total),
+ IoList = io_lib:format("~3.. B% ~10.3B ~10.3f ~10.3f => ~s\n",
+ [Percent, Cnt, Acc, Own, MFAStr]),
+ file:write(Fd, IoList),
+ do_gen_details(Fd, Total, Details);
+do_gen_details(_Fd, _Total, []) ->
+ ok.
+
+log(Fd, Label, Indent, Acc, Current, Calls, MinPercent) when is_list(Calls) ->
+ log(Fd, Label, Indent, Acc, Current, length(Calls), MinPercent);
+log(Fd, Label, Indent, Total, {MFA, Cnt, Acc, Own}, N, MinPercent) ->
+ {Max, Percent} = calc_percent(Acc, Own, Total),
+ if
+ Percent >= MinPercent ->
+ do_log(Fd, Label, Indent, Percent, MFA, Cnt, Max, Own, N);
+ true ->
+ ok
end.
-find(Key, [{_, {Key, _, _, _}, _} = H | _]) ->
- H;
-find(Key, [{_, {_, _, _, _}, _} | T]) ->
- find(Key, T).
-
-log(Fd, Indent, Total, {Label, Cnt, Acc, Own}) ->
- Percent = case Acc of
- undefined -> 100;
- _ -> trunc((lists:max([Acc, Own]) * 100) / Total)
- end,
- Label2 = io_lib:format("~p", [Label]),
- IoList = io_lib:format("~s~p% ~s \t~p \t~p \t~p\n",
- [Indent, Percent, Label2, Cnt, trunc(Acc), trunc(Own)]),
+do_log(Fd, Label, Indent, Percent, MFA, Cnt, Acc, Own, N) ->
+ MFAStr = io_lib:format("~p", [MFA]),
+ CallsStr = io_lib:format(" ~5.. s ", [lists:concat([N])]),
+ IoList = io_lib:format("~s ~3.. B "
+ "~s~3.. B% ~10.. B ~10.. B ~10.. B ~s => ~s\n",
+ [Label, length(Indent) div 2,
+ Indent, Percent, Cnt,
+ round(Acc), round(Own), CallsStr, MFAStr]),
file:write(Fd, IoList).
+calc_percent(Acc, Own, Total) ->
+ Max = safe_max(Acc, Own),
+ {Max, round((Max * 100) / Total)}.
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-23 08:24:16 +0000