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2491-observer-chunk-process-list-info.patch
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File 2491-observer-chunk-process-list-info.patch of Package erlang
From 769d0e95bf09f1c55e5d176a5f261c4767995b2b Mon Sep 17 00:00:00 2001 From: Dan Gudmundsson <dgud@erlang.org> Date: Tue, 9 May 2017 08:26:51 +0200 Subject: [PATCH 1/4] observer: chunk process list info --- lib/observer/src/observer_pro_wx.erl | 134 +++++++++++++++++++---------- lib/runtime_tools/src/observer_backend.erl | 19 +++- 2 files changed, 107 insertions(+), 46 deletions(-) diff --git a/lib/observer/src/observer_pro_wx.erl b/lib/observer/src/observer_pro_wx.erl index ffa6f6d3b..d47dd3e1e 100644 --- a/lib/observer/src/observer_pro_wx.erl +++ b/lib/observer/src/observer_pro_wx.erl @@ -67,12 +67,14 @@ -record(holder, {parent, info, - etop, + next=[], sort=#sort{}, accum=[], + next_accum=[], attrs, node, - backend_pid + backend_pid, + old_backend=false }). -record(state, {parent, @@ -226,7 +228,7 @@ handle_info({holder_updated, Count}, State0=#state{grid=Grid}) -> wxListCtrl:setItemCount(Grid, Count), Count > 0 andalso wxListCtrl:refreshItems(Grid, 0, Count-1), - + observer_wx:set_status(io_lib:format("Number of Processes: ~w", [Count])), {noreply, State}; handle_info(refresh_interval, #state{holder=Holder}=State) -> @@ -459,13 +461,13 @@ rm_selected(_, [], [], AccIds, AccPids) -> %%%%%%%%%%%%%%%%%%%%%%%%%%%TABLE HOLDER%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% init_table_holder(Parent, Accum0, Attrs) -> - Backend = spawn_link(node(), observer_backend,etop_collect,[self()]), + process_flag(trap_exit, true), + Backend = spawn_link(node(), observer_backend, procs_info, [self()]), Accum = case Accum0 of true -> true; false -> [] end, table_holder(#holder{parent=Parent, - etop=#etop_info{}, info=array:new(), node=node(), backend_pid=Backend, @@ -474,7 +476,7 @@ init_table_holder(Parent, Accum0, Attrs) -> }). table_holder(#holder{info=Info, attrs=Attrs, - node=Node, backend_pid=Backend}=S0) -> + node=Node, backend_pid=Backend, old_backend=Old}=S0) -> receive {get_row, From, Row, Col} -> get_row(From, Row, Col, Info), @@ -482,14 +484,25 @@ table_holder(#holder{info=Info, attrs=Attrs, {get_attr, From, Row} -> get_attr(From, Row, Attrs), table_holder(S0); + {procs_info, Backend, Procs} -> + State = handle_update(Procs, S0), + table_holder(State); + {'EXIT', Backend, normal} when Old =:= false -> + S1 = update_complete(S0), + table_holder(S1#holder{backend_pid=undefined}); {Backend, EtopInfo=#etop_info{}} -> - State = handle_update(EtopInfo, S0), + State = handle_update_old(EtopInfo, S0), table_holder(State#holder{backend_pid=undefined}); refresh when is_pid(Backend)-> table_holder(S0); %% Already updating refresh -> - Pid = spawn_link(Node,observer_backend,etop_collect,[self()]), - table_holder(S0#holder{backend_pid=Pid}); + Pid = case Old of + true -> + spawn_link(Node, observer_backend, etop_collect, [self()]); + false -> + spawn_link(Node, observer_backend, procs_info, [self()]) + end, + table_holder(S0#holder{backend_pid=Pid}); {change_sort, Col} -> State = change_sort(Col, S0), table_holder(State); @@ -502,7 +515,6 @@ table_holder(#holder{info=Info, attrs=Attrs, {get_name_or_pid, From, Indices} -> get_name_or_pid(From, Indices, Info), table_holder(S0); - {get_node, From} -> From ! {self(), Node}, table_holder(S0); @@ -511,36 +523,50 @@ table_holder(#holder{info=Info, attrs=Attrs, true -> table_holder(S0); false -> - self() ! refresh, - table_holder(S0#holder{node=NewNode}) - end; + _ = rpc:call(NewNode, code, ensure_loaded, [observer_backend]), + case rpc:call(NewNode, erlang, function_exported, + [observer_backend,procs_info, 1]) of + true -> + self() ! refresh, + table_holder(S0#holder{node=NewNode, old_backend=false}); + false -> + self() ! refresh, + table_holder(S0#holder{node=NewNode, old_backend=true}); + _ -> + table_holder(S0) + end + end; {accum, Bool} -> table_holder(change_accum(Bool,S0)); {get_accum, From} -> From ! {self(), S0#holder.accum == true}, table_holder(S0); {dump, Fd} -> - EtopInfo = (S0#holder.etop)#etop_info{procinfo=array:to_list(Info)}, - %% The empty #etop_info{} below is a dummy previous info - %% value. It is used by etop to calculate the scheduler - %% utilization since last update. When dumping to file, - %% there is no previous measurement to use, so we just add - %% a dummy here, and the value shown will be since the - %% tool was started. - etop_txt:do_update(Fd, EtopInfo, #etop_info{}, #opts{node=Node}), - file:close(Fd), - table_holder(S0); + Collector = spawn_link(Node, observer_backend, etop_collect,[self()]), + receive + {Collector, EtopInfo=#etop_info{}} -> + etop_txt:do_update(Fd, EtopInfo, #etop_info{}, #opts{node=Node}), + file:close(Fd), + table_holder(S0); + {'EXIT', Collector, _} -> + table_holder(S0) + end; stop -> ok; - What -> - io:format("Table holder got ~p~n",[What]), + {'EXIT', Backend, normal} -> + table_holder(S0); + {'EXIT', Backend, _Reason} -> + %% Node crashed will be noticed soon.. + table_holder(S0#holder{backend_pid=undefined}); + _What -> + %% io:format("~p: Table holder got ~p~n",[?MODULE, _What]), table_holder(S0) end. change_sort(Col, S0=#holder{parent=Parent, info=Data, sort=Sort0}) -> {Sort, ProcInfo}=sort(Col, Sort0, Data), Parent ! {holder_updated, array:size(Data)}, - S0#holder{info=ProcInfo, sort=Sort}. + S0#holder{info=array:from_list(ProcInfo), sort=Sort}. change_accum(true, S0) -> S0#holder{accum=true}; @@ -548,23 +574,44 @@ change_accum(false, S0=#holder{info=Info}) -> self() ! refresh, S0#holder{accum=lists:sort(array:to_list(Info))}. -handle_update(EI=#etop_info{procinfo=ProcInfo0}, - S0=#holder{parent=Parent, sort=Sort=#sort{sort_key=KeyField}}) -> - {ProcInfo1, S1} = accum(ProcInfo0, S0), +handle_update_old(#etop_info{procinfo=ProcInfo0}, + S0=#holder{parent=Parent, sort=Sort=#sort{sort_key=KeyField}}) -> + {ProcInfo1, Accum} = accum(ProcInfo0, S0), {_SO, ProcInfo} = sort(KeyField, Sort#sort{sort_key=undefined}, ProcInfo1), - Parent ! {holder_updated, array:size(ProcInfo)}, - S1#holder{info=ProcInfo, etop=EI#etop_info{procinfo=[]}}. + Info = array:from_list(ProcInfo), + Parent ! {holder_updated, array:size(Info)}, + S0#holder{info=Info, accum=Accum}. + +handle_update(ProcInfo0, S0=#holder{next=Next, sort=#sort{sort_key=KeyField}}) -> + {ProcInfo1, Accum} = accum(ProcInfo0, S0), + ProcInfo = lists:keysort(col_to_element(KeyField), ProcInfo1), + Merged = lists:keymerge(col_to_element(KeyField), ProcInfo, Next), + case Accum of + true -> S0#holder{next=Merged}; + _List -> S0#holder{next=Merged, next_accum=Accum} + end. -accum(ProcInfo, State=#holder{accum=true}) -> - {ProcInfo, State}; -accum(ProcInfo0, State=#holder{accum=Previous}) -> +update_complete(#holder{parent=Parent, sort=#sort{sort_incr=Incr}, + next=ProcInfo, accum=Accum, next_accum=NextAccum}=S0) -> + Info = case Incr of + true -> array:from_list(ProcInfo); + false -> array:from_list(lists:reverse(ProcInfo)) + end, + Parent ! {holder_updated, array:size(Info)}, + S0#holder{info=Info, accum= Accum =:= true orelse NextAccum, + next=[], next_accum=[]}. + +accum(ProcInfo, #holder{accum=true}) -> + {ProcInfo, true}; +accum(ProcInfo0, #holder{accum=Previous, next_accum=Next}) -> + Accum = [{Pid, Reds} || #etop_proc_info{pid=Pid, reds=Reds} <- ProcInfo0], ProcInfo = lists:sort(ProcInfo0), - {accum2(ProcInfo,Previous,[]), State#holder{accum=ProcInfo}}. + {accum2(ProcInfo,Previous,[]), lists:merge(lists:sort(Accum), Next)}. -accum2([PI=#etop_proc_info{pid=Pid, reds=Reds, runtime=RT}|PIs], - [#etop_proc_info{pid=Pid, reds=OldReds, runtime=OldRT}|Old], Acc) -> - accum2(PIs, Old, [PI#etop_proc_info{reds=Reds-OldReds, runtime=RT-OldRT}|Acc]); -accum2(PIs=[#etop_proc_info{pid=Pid}|_], [#etop_proc_info{pid=OldPid}|Old], Acc) +accum2([PI=#etop_proc_info{pid=Pid, reds=Reds}|PIs], + [{Pid, OldReds}|Old], Acc) -> + accum2(PIs, Old, [PI#etop_proc_info{reds=Reds-OldReds}|Acc]); +accum2(PIs=[#etop_proc_info{pid=Pid}|_], [{OldPid,_}|Old], Acc) when Pid > OldPid -> accum2(PIs, Old, Acc); accum2([PI|PIs], Old, Acc) -> @@ -575,14 +622,11 @@ sort(Col, Opt, Table) when not is_list(Table) -> sort(Col,Opt,array:to_list(Table)); sort(Col, Opt=#sort{sort_key=Col, sort_incr=Bool}, Table) -> - {Opt#sort{sort_incr=not Bool}, - array:from_list(lists:reverse(Table))}; + {Opt#sort{sort_incr=not Bool},lists:reverse(Table)}; sort(Col, S=#sort{sort_incr=true}, Table) -> - {S#sort{sort_key=Col}, - array:from_list(lists:keysort(col_to_element(Col), Table))}; + {S#sort{sort_key=Col}, lists:keysort(col_to_element(Col), Table)}; sort(Col, S=#sort{sort_incr=false}, Table) -> - {S#sort{sort_key=Col}, - array:from_list(lists:reverse(lists:keysort(col_to_element(Col), Table)))}. + {S#sort{sort_key=Col}, lists:reverse(lists:keysort(col_to_element(Col), Table))}. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%% diff --git a/lib/runtime_tools/src/observer_backend.erl b/lib/runtime_tools/src/observer_backend.erl index 1e0d2d642..d36af257c 100644 --- a/lib/runtime_tools/src/observer_backend.erl +++ b/lib/runtime_tools/src/observer_backend.erl @@ -23,7 +23,7 @@ -export([vsn/0]). %% observer stuff --export([sys_info/0, get_port_list/0, +-export([sys_info/0, get_port_list/0, procs_info/1, get_table/3, get_table_list/2, fetch_stats/2]). %% etop stuff @@ -293,6 +293,23 @@ fetch_stats_loop(Parent, Time) -> try erlang:memory() catch _:_ -> [] end}, fetch_stats_loop(Parent, Time) end. + +%% +%% Chunk sending process info to etop/observer +%% +procs_info(Collector) -> + All = processes(), + Send = fun Send (Pids) -> + try lists:split(10000, Pids) of + {First, Rest} -> + Collector ! {procs_info, self(), etop_collect(First, [])}, + Send(Rest) + catch _:_ -> + Collector ! {procs_info, self(), etop_collect(Pids, [])} + end + end, + Send(All). + %% %% etop backend %% -- 2.13.0
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