[OpenSIPS-Users] sched_yield()

[Alex Massover]

Hi!

Yes, from the source on debian, I build deb package. (I did some minor changes to the source, but the problem happens also without my changes)
16 children on 4 cores.

What do you suggest to reduce it to 4? It runs on 2.6.32 on VMware ESX.

I'm also trying now sleep(0) instead of sched_yield().

--
Best Regards,
Alex Massover
VoIP R&D TL
Jajah Inc.
> -----Original Message-----
> From: users-bounces at lists.opensips.org [mailto:users-
> bounces at lists.opensips.org] On Behalf Of Andrei Dragus
> Sent: Wednesday, January 20, 2010 1:05 PM
> To: OpenSIPS users mailling list
> Subject: Re: [OpenSIPS-Users] sched_yield()
> 
> Hi Alex,
> 
> Are you building OpenSIPS from source?
> How many processes do you have and on how many cores?
> 
> 
> Alex Massover wrote:
> >
> > Hello!
> >
> > I'm facing a strange problem, sometimes under a stress OpenSIPS
> > "locks" - load average jumps, SIP processing delays, opensips msg
> > queue fills with a lot of sip messages, opensips processes start to
> > comsume a lot of CPU.
> >
> > And strace shows:
> >
> > sched_yield()
> >
> > sched_yield()
> >
> > sched_yield()
> >
> > sched_yield()
> >
> > ....
> >
> > for all processes.
> >
> > If I stop the stress - after a while (not immediately) - it unlocks,
> > also suddenly, I can see in top that all opensips processes stop to
> > consume CPU.
> >
> > What can it be? Some kind of starvation?
> >
> > --
> >
> > Best Regards,
> >
> > Alex Massover
> >
> > VoIP R&D TL
> >
> > Jajah Inc.
> >
> >
> >
> > This mail was sent via Mail-SeCure System.
> > ---------------------------------------------------------------------
> ---
> >
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> >
> 
> --
> Andrei Dragus
> www.voice-system.ro
> 
> 
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