From 8ddf6320dd2d82d47fc616a0f23f891b234f1b27 Mon Sep 17 00:00:00 2001
From: Dan Gudmundsson
Date: Mon, 13 Feb 2017 15:41:35 +0100
Subject: observer: Add a max carrier size column
Users wanted to see the maximum value seen by observer during it's uptime.
Note changes faster than the sample rate will still be missed.
---
lib/observer/doc/src/observer_ug.xml | 5 +++++
lib/observer/src/observer_alloc_wx.erl | 35 ++++++++++++++++++++++++----------
2 files changed, 30 insertions(+), 10 deletions(-)
(limited to 'lib')
diff --git a/lib/observer/doc/src/observer_ug.xml b/lib/observer/doc/src/observer_ug.xml
index 6eb72f3e58..ae85ab7a29 100644
--- a/lib/observer/doc/src/observer_ug.xml
+++ b/lib/observer/doc/src/observer_ug.xml
@@ -107,6 +107,11 @@
see module
erts_alloc
in application ERTS.
+ The Max Carrier size column shows the maximum value seen by observer
+ since the last node change or since the start of the application, i.e. switching
+ nodes will reset the max column. Values are sampled so higher values may have
+ existed than what is shown.
+
diff --git a/lib/observer/src/observer_alloc_wx.erl b/lib/observer/src/observer_alloc_wx.erl
index ca54080e15..cad02087be 100644
--- a/lib/observer/src/observer_alloc_wx.erl
+++ b/lib/observer/src/observer_alloc_wx.erl
@@ -36,6 +36,7 @@
wins,
mem,
samples,
+ max,
panel,
paint,
appmon,
@@ -74,7 +75,8 @@ init([Notebook, Parent]) ->
wins = Windows,
mem = MemWin,
paint = PaintInfo,
- time = setup_time()
+ time = setup_time(),
+ max = #{}
}
}
catch _:Err ->
@@ -126,16 +128,17 @@ handle_info({Key, {promise_reply, {badrpc, _}}}, #state{async=Key} = State) ->
{noreply, State#state{active=false, appmon=undefined}};
handle_info({Key, {promise_reply, SysInfo}},
- #state{async=Key, panel=_Panel, samples=Data, active=Active, wins=Wins0,
- time=#ti{tick=Tick, disp=Disp0}=Ti} = S0) ->
+ #state{async=Key, samples=Data, max=Max0,
+ active=Active, wins=Wins0, time=#ti{tick=Tick, disp=Disp0}=Ti} = S0) ->
Disp = trunc(Disp0),
Next = max(Tick - Disp, 0),
erlang:send_after(1000 div ?DISP_FREQ, self(), {refresh, Next}),
Info = alloc_info(SysInfo),
+ Max = lists:foldl(fun calc_max/2, Max0, Info),
{Wins, Samples} = add_data(Info, Data, Wins0, Ti, Active),
- S1 = S0#state{time=Ti#ti{tick=Next}, wins=Wins, samples=Samples, async=undefined},
+ S1 = S0#state{time=Ti#ti{tick=Next}, wins=Wins, samples=Samples, max=Max, async=undefined},
if Active ->
- update_alloc(S0, Info),
+ update_alloc(S0, Info, Max),
State = precalc(S1),
{noreply, State};
true ->
@@ -187,25 +190,35 @@ code_change(_, _, State) ->
restart_fetcher(Node, #state{panel=Panel, wins=Wins0, time=Ti} = State) ->
SysInfo = observer_wx:try_rpc(Node, observer_backend, sys_info, []),
Info = alloc_info(SysInfo),
+ Max = lists:foldl(fun calc_max/2, #{}, Info),
{Wins, Samples} = add_data(Info, {0, queue:new()}, Wins0, Ti, true),
erlang:send_after(1000 div ?DISP_FREQ, self(), {refresh, 0}),
wxWindow:refresh(Panel),
precalc(State#state{active=true, appmon=Node, time=Ti#ti{tick=0},
- wins=Wins, samples=Samples}).
+ wins=Wins, samples=Samples, max=Max}).
precalc(#state{samples=Data0, paint=Paint, time=Ti, wins=Wins0}=State) ->
Wins = [precalc(Ti, Data0, Paint, Win) || Win <- Wins0],
State#state{wins=Wins}.
+calc_max({Name, _, Cs}, Max0) ->
+ case maps:get(Name, Max0, 0) of
+ Value when Value < Cs ->
+ Max0#{Name=>Cs};
+ _V ->
+ Max0
+ end.
-update_alloc(#state{mem=Grid}, Fields) ->
+update_alloc(#state{mem=Grid}, Fields, Max) ->
wxWindow:freeze(Grid),
- Max = wxListCtrl:getItemCount(Grid),
+ Last = wxListCtrl:getItemCount(Grid),
Update = fun({Name, BS, CS}, Row) ->
- (Row >= Max) andalso wxListCtrl:insertItem(Grid, Row, ""),
+ (Row >= Last) andalso wxListCtrl:insertItem(Grid, Row, ""),
+ MaxV = maps:get(Name, Max, CS),
wxListCtrl:setItem(Grid, Row, 0, observer_lib:to_str(Name)),
wxListCtrl:setItem(Grid, Row, 1, observer_lib:to_str(BS div 1024)),
wxListCtrl:setItem(Grid, Row, 2, observer_lib:to_str(CS div 1024)),
+ wxListCtrl:setItem(Grid, Row, 3, observer_lib:to_str(MaxV div 1024)),
Row + 1
end,
wx:foldl(Update, 0, Fields),
@@ -269,7 +282,9 @@ create_mem_info(Parent) ->
end,
ListItems = [{"Allocator Type", ?wxLIST_FORMAT_LEFT, 200},
{"Block size (kB)", ?wxLIST_FORMAT_RIGHT, 150},
- {"Carrier size (kB)",?wxLIST_FORMAT_RIGHT, 150}],
+ {"Carrier size (kB)",?wxLIST_FORMAT_RIGHT, 150},
+ {"Max Carrier size (kB)",?wxLIST_FORMAT_RIGHT, 150}
+ ],
lists:foldl(AddListEntry, 0, ListItems),
wxListItem:destroy(Li),
--
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