[asterisk-dev] asterisk optimalizations

[Sergey Tamkovich]

marek cervenka ?????:
> hi,
> 
> i'm testing asterisk 1.6/1.4/1.2 in the following scenario
> centos5/cpu quad xeon E5335 2.0Ghz
> - test clients behind nat
> - 1500+ testing instances - reregister option from 1min to 1hour
> - qualify set to 5000
> 
> top shows over 100% cpu. cpu cores sometimes go to 95%
> with htop i see ~16threads but only one child have ~95% cpu
> (how i can get info about that thread? what he is doing?)
> 

You need to use a software called "Profiler" there are at least 3 
profilers for linux: gprof, oprofile and callgrind from valgrind package.

I wasn't able to run gprof with asterisk, there is something with 
asterisk ending that don't fit gprof..

oprofile works nice though..



> what is major bottleneck? 
> qualify imho not. i'm tried set qualify=no, 
> this does not help
> SIP REGISTER packets?
> 
> this problem persist if no calls are active
> after restart cpu usage slowly increase. after a ~hour is about 100%
> 
> which optimalizations do you recommend for ~1500 peers scenario? (behind
> nat, reregistrations)
> how i can debug which thread/operations are most cpu intesive? strace? 
> gdb? can you show some examples?
> 
> thanks
> 
> ---------------------------------------
> Marek Cervenka
> =======================================
> 
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