diff options
Diffstat (limited to 'lib/observer/src/etop.erl')
| -rw-r--r-- | lib/observer/src/etop.erl | 40 |
1 files changed, 27 insertions, 13 deletions
diff --git a/lib/observer/src/etop.erl b/lib/observer/src/etop.erl index fcb900960b..f0990f1f25 100644 --- a/lib/observer/src/etop.erl +++ b/lib/observer/src/etop.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2002-2016. All Rights Reserved. +%% Copyright Ericsson AB 2002-2017. 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. @@ -23,7 +23,7 @@ -export([start/0, start/1, config/2, stop/0, dump/1, help/0]). %% Internal -export([update/1]). --export([loadinfo/1, meminfo/2, getopt/2]). +-export([loadinfo/2, meminfo/2, getopt/2]). -include("etop.hrl"). -include("etop_defs.hrl"). @@ -81,7 +81,7 @@ check_runtime_config(accumulate,A) when A=:=true; A=:=false -> ok; check_runtime_config(_Key,_Value) -> error. dump(File) -> - case file:open(File,[write]) of + case file:open(File,[write,{encoding,utf8}]) of {ok,Fd} -> etop_server ! {dump,Fd}; Error -> Error end. @@ -161,7 +161,7 @@ data_handler(Reader, Opts) -> {'EXIT', EPid, Reason} when EPid == Opts#opts.out_proc -> case Reason of normal -> ok; - _ -> io:format("Output server crashed: ~p~n",[Reason]) + _ -> io:format("Output server crashed: ~tp~n",[Reason]) end, stop(Opts), out_proc_stopped; @@ -180,10 +180,16 @@ stop(Opts) -> end, unregister(etop_server). -update(#opts{store=Store,node=Node,tracing=Tracing}=Opts) -> +update(#opts{store=Store,node=Node,tracing=Tracing,intv=Interval}=Opts) -> Pid = spawn_link(Node,observer_backend,etop_collect,[self()]), Info = receive {Pid,I} -> I - after 1000 -> exit(connection_lost) + after Interval -> + %% Took more than the update interval to fetch + %% data. Either the connection is lost or the + %% fetching took too long... + io:format("Timeout when waiting for process info from " + "node ~p; exiting~n", [Node]), + exit(timeout) end, #etop_info{procinfo=ProcInfo} = Info, ProcInfo1 = @@ -319,18 +325,18 @@ output(graphical) -> exit({deprecated, "Use observer instead"}); output(text) -> etop_txt. -loadinfo(SysI) -> +loadinfo(SysI,Prev) -> #etop_info{n_procs = Procs, run_queue = RQ, now = Now, wall_clock = WC, runtime = RT} = SysI, - Cpu = calculate_cpu_utilization(WC,RT), + Cpu = calculate_cpu_utilization(WC,RT,Prev#etop_info.runtime), 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}) -> +calculate_cpu_utilization({_,WC},{_,RT},_) -> %% Old version of observer_backend, using statistics(wall_clock) %% and statistics(runtime) case {WC,RT} of @@ -341,15 +347,23 @@ calculate_cpu_utilization({_,WC},{_,RT}) -> _ -> round(100*RT/WC) end; -calculate_cpu_utilization(_,undefined) -> +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) -> +calculate_cpu_utilization(WC,RTInfo,undefined) -> + %% Second time collecting - RTInfo shows scheduler_wall_time since + %% flag was set to true. Faking previous values by setting + %% everything to zero. + ZeroRT = [{Id,0,0} || {Id,_,_} <- RTInfo], + calculate_cpu_utilization(WC,RTInfo,ZeroRT); +calculate_cpu_utilization(_,RTInfo,PrevRTInfo) -> %% New version of observer_backend, using statistics(scheduler_wall_time) - Sum = lists:foldl(fun({_,A,T},{AAcc,TAcc}) -> {A+AAcc,T+TAcc} end, + Sum = lists:foldl(fun({{_, A0, T0}, {_, A1, T1}},{AAcc,TAcc}) -> + {(A1 - A0)+AAcc,(T1 - T0)+TAcc} + end, {0,0}, - RTInfo), + lists:zip(PrevRTInfo,RTInfo)), case Sum of {0,0} -> 0; |