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Merge branch 'siri/observer/misc-bugs/OTP-10894' into maint

* siri/observer/misc-bugs/OTP-10894:
  [observer] Extend timer to allow trace msgs to arrive over tcp/ip
  [observer] Kill slave node between tests in etop_SUITE
  [observer] Accept current function for a process to be 'undefined' on hipe
  [observer] Improve measurement of CPU utilization in etop
  [observer] Fix non tail-recusive loop when measuring scheduler utilization
  • Loading branch information...
commit 8e44167cb97ccf51a8ee3ca97449613ef3300514 2 parents e2ee1f7 + 6ab4b1c
@sirihansen sirihansen authored
View
35 lib/observer/src/etop.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2002-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2002-2013. 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
@@ -325,13 +325,40 @@ loadinfo(SysI) ->
#etop_info{n_procs = Procs,
run_queue = RQ,
now = Now,
- wall_clock = {_, WC},
- runtime = {_, RT}} = SysI,
- Cpu = round(100*RT/WC),
+ wall_clock = WC,
+ runtime = RT} = SysI,
+ Cpu = calculate_cpu_utilization(WC,RT),
Clock = io_lib:format("~2.2.0w:~2.2.0w:~2.2.0w",
tuple_to_list(element(2,calendar:now_to_datetime(Now)))),
{Cpu,Procs,RQ,Clock}.
+calculate_cpu_utilization({_,WC},{_,RT}) ->
+ %% Old version of observer_backend, using statistics(wall_clock)
+ %% and statistics(runtime)
+ case {WC,RT} of
+ {0,0} ->
+ 0;
+ {0,_} ->
+ 100;
+ _ ->
+ round(100*RT/WC)
+ end;
+calculate_cpu_utilization(_,undefined) ->
+ %% First time collecting - no cpu utilization has been measured
+ %% since scheduler_wall_time flag is not yet on
+ 0;
+calculate_cpu_utilization(_,RTInfo) ->
+ %% New version of observer_backend, using statistics(scheduler_wall_time)
+ Sum = lists:foldl(fun({_,A,T},{AAcc,TAcc}) -> {A+AAcc,T+TAcc} end,
+ {0,0},
+ RTInfo),
+ case Sum of
+ {0,0} ->
+ 0;
+ {Active,Total} ->
+ round(100*Active/Total)
+ end.
+
meminfo(MemI, [Tag|Tags]) ->
[round(get_mem(Tag, MemI)/1024)|meminfo(MemI, Tags)];
meminfo(_MemI, []) -> [].
View
9 lib/observer/src/etop_gui.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2002-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2002-2013. 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
@@ -276,7 +276,12 @@ clear_lines(From, To, Grid) ->
end.
formatmfa({M, F, A}) ->
- io_lib:format("~w:~w/~w",[M, F, A]).
+ io_lib:format("~w:~w/~w",[M, F, A]);
+formatmfa(Other) ->
+ %% E.g. when running hipe - the current_function for some
+ %% processes will be 'undefined'
+ io_lib:format("~w",[Other]).
+
makegridlines([#etop_proc_info{pid=Pid,
mem=Mem,
View
24 lib/observer/test/etop_SUITE.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2002-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2002-2013. 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
@@ -21,7 +21,8 @@
%% Test functions
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
- init_per_group/2,end_per_group/2,text/1,text_tracing_off/1]).
+ init_per_group/2,end_per_group/2]).
+-export([text/1,text/2,text_tracing_off/1,text_tracing_off/2]).
-export([init_per_testcase/2, end_per_testcase/2]).
-include_lib("test_server/include/test_server.hrl").
@@ -31,7 +32,10 @@
init_per_testcase(_Case, Config) ->
?line Dog=test_server:timetrap(?default_timeout),
[{watchdog, Dog}|Config].
-end_per_testcase(_Case, Config) ->
+end_per_testcase(Case, Config) ->
+ try apply(?MODULE,Case,[cleanup,Config])
+ catch error:undef -> ok
+ end,
Dog=?config(watchdog, Config),
?t:timetrap_cancel(Dog),
ok.
@@ -82,9 +86,12 @@ text() ->
?line timer:sleep(3000),
?line etop:config(sort,msg_q),
?line timer:sleep(3000),
- ?line etop:stop(),
- ?line ?t:stop_node(Node),
ok.
+text(cleanup,_Config) ->
+ etop:stop(),
+ {ok,Host} = inet:gethostname(),
+ Node = list_to_atom("node2@"++Host),
+ ?t:stop_node(Node).
text_tracing_off(suite) ->
[];
@@ -111,7 +118,10 @@ text_tracing_off(Config) when is_list(Config) ->
?line timer:sleep(3000),
?line etop:config(sort,runtime), % this should not crash, but has no effect
?line timer:sleep(3000),
- ?line etop:stop(),
- ?line ?t:stop_node(Node),
ok.
+text_tracing_off(cleanup,_Config) ->
+ etop:stop(),
+ {ok,Host} = inet:gethostname(),
+ Node = list_to_atom("node2@"++Host),
+ ?t:stop_node(Node).
View
5 lib/observer/test/ttb_SUITE.erl
@@ -1,7 +1,8 @@
+%%
%% %CopyrightBegin%
%%
%%
-%% Copyright Ericsson AB 2002-2010. All Rights Reserved.
+%% Copyright Ericsson AB 2002-2013. 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
@@ -57,7 +58,7 @@ init_per_testcase(Case, Config) ->
catch error:undef -> ok
end,
[{watchdog, Dog}|Config].
-end_per_testcase(Case, Config) ->
+end_per_testcase(_Case, Config) ->
%% try apply(?MODULE,Case,[cleanup,Config])
%% catch error:undef -> ok
%% end,
View
2  lib/observer/test/ttb_helper.erl
@@ -70,7 +70,7 @@ msgs(N) ->
msgs_ip(N) ->
[c(client, put, [test_msg]) || _ <- lists:seq(1, N)],
s(server, received, [a,b]),
- timer:sleep(200). %% allow trace messages to arrive over tcp/ip
+ timer:sleep(500). %% allow trace messages to arrive over tcp/ip
run() ->
ttb({local, "A"}),
View
23 lib/runtime_tools/include/observer_backend.hrl
@@ -1,26 +1,27 @@
-%% ``The contents of this file are subject to the Erlang Public License,
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2002-2013. 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
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
-%% retrieved via the world wide web at http://www.erlang.org/.
-%%
+%% retrieved online at http://www.erlang.org/.
+%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
-%%
-%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
-%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
-%% AB. All Rights Reserved.''
-%%
-%% $Id$
+%%
+%% %CopyrightEnd%
%%
-record(etop_info,
{now = {0, 0, 0},
n_procs = 0,
- wall_clock = {0, 0},
- runtime = {0, 0},
+ wall_clock,
+ runtime,
run_queue = 0,
alloc_areas = [],
memi = [{total, 0},
View
41 lib/runtime_tools/src/observer_backend.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2002-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2002-2013. 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
@@ -199,34 +199,57 @@ get_table_list(mnesia, Opts) ->
lists:foldl(Info, [], mnesia:system_info(tables)).
fetch_stats(Parent, Time) ->
- erlang:system_flag(scheduler_wall_time, true),
process_flag(trap_exit, true),
- fetch_stats_loop(Parent, Time),
- erlang:system_flag(scheduler_wall_time, false).
+ fetch_stats_loop(Parent, Time).
fetch_stats_loop(Parent, Time) ->
+ erlang:system_flag(scheduler_wall_time, true),
receive
- _Msg -> normal
+ _Msg -> erlang:system_flag(scheduler_wall_time, false)
after Time ->
_M = Parent ! {stats, 1,
erlang:statistics(scheduler_wall_time),
erlang:statistics(io),
erlang:memory()},
- fetch_stats(Parent, Time)
+ fetch_stats_loop(Parent, Time)
end.
%%
%% etop backend
%%
etop_collect(Collector) ->
+ %% If this is the first time and the scheduler_wall_time flag is
+ %% false, SchedulerWallTime will be 'undefined' (and show 0 cpu
+ %% utilization in etop). Next time the flag will be true and then
+ %% there will be a measurement.
+ SchedulerWallTime = erlang:statistics(scheduler_wall_time),
+
+ %% Turn off the flag while collecting data per process etc.
+ case erlang:system_flag(scheduler_wall_time,false) of
+ false ->
+ %% First time and the flag was false - start a monitoring
+ %% process to set the flag back to false when etop is stopped.
+ spawn(fun() -> flag_holder_proc(Collector) end);
+ _ ->
+ ok
+ end,
+
ProcInfo = etop_collect(processes(), []),
+
Collector ! {self(),#etop_info{now = now(),
n_procs = length(ProcInfo),
run_queue = erlang:statistics(run_queue),
- wall_clock = erlang:statistics(wall_clock),
- runtime = erlang:statistics(runtime),
+ runtime = SchedulerWallTime,
memi = etop_memi(),
procinfo = ProcInfo
- }}.
+ }},
+ erlang:system_flag(scheduler_wall_time,true).
+
+flag_holder_proc(Collector) ->
+ Ref = erlang:monitor(process,Collector),
+ receive
+ {'DOWN',Ref,_,_,_} ->
+ erlang:system_flag(scheduler_wall_time,false)
+ end.
etop_memi() ->
try
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