MongooseIM
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Profiling CPU and memory for mongooseim installation.
MongooseIM version: 3.6.0 Installed from: source Erlang/OTP version: 22x
Our mongooseim set up is taking more CPU and memory and we need to find out which process is taking more CPU. When we search etop can help to find the issue : Erlang -- etop (http://erlang.org/doc/man/etop.html)
But when we tried to run with debug mod it does not work.
mongooseimctl debug
(mongooseim@mongooseim-02)1> etop:start().
** exception error: undefined function etop:start/0
when tried from erl shell on the system then it does not connect.
etop:start([{node, mongooseim@mongooseim-c01}]).
** exception error: an error occurred when evaluating an arithmetic expression
in operator -/2
called as mongooseim@mongooseim - c01
It worked for me in following ways, closing issue.
/mongooseim# erl -sname mynod
Erlang/OTP 22 [erts-10.4] [source] [64-bit] [smp:2:2] [ds:2:2:10] [async-threads:1]
Eshell V10.4 (abort with ^G)
(mynod@mongooseim-c01)1> erlang:set_cookie(node(), ejabberd).
true
(mynod@mongooseim-c01)2> etop:start([{node,'mongooseim@mongooseim-c01'}]).
========================================================================================
'mongooseim@mongooseim-c01' 10:12:49
Load: cpu 0 Memory: total 276739 binary 15145
procs 1488 processes 224627 code 18831
runq 1 atom 1001 ets 5493
Pid Name or Initial Func Time Reds Memory MsgQ Current Function
----------------------------------------------------------------------------------------
<8828.242.0> exometer_admin 52 82978 489944 0 gen_server:loop/7
<8828.51.0> rex 29 69357 10084 0 gen_server:loop/7
<8828.748.0> 'wpool_pool-mongoose 29 11308 2732 0 gen_server:loop/7
<8828.58.0> net_kernel 26 689047 7140 0 gen_server:loop/7
<8828.474.0> mnesia_controller 23 243723 8900 0 gen_server:loop/7
<8828.640.0> supervisor:cqerl_cli 23 21602 92992 0 gen_server:loop/7
<8828.744.0> 'wpool_pool-mongoose 17 23842 92932 0 gen_server:loop/7
<8828.182.0> cqerl 16 57369 94664 0 gen_server:loop/7
<8828.989.0> mysql_conn:init/1 1331255327 26480 0 gen_server:loop/7
<8828.0.0> init 11 17957 21548 0 init:loop/1
========================================================================================
https://drive.google.com/file/d/1d40FWgw3_wwQjkDYinsNuL5lKoW70Kii/view?usp=sharing
I found mysql is called more and using more Reds in production and hence more CPU. How can I find out which mod is calling more queries?
To find out which module is calling the queries, you can try to gather data for specific modules with Erlang Doctor. Use with caution, especially in production env. I am closing this one for now.
