[Freeswitch-users] RedHat 6.X Performance

[Lloyd Aloysius]

Hi All:

Does this performance problem still exists in CentOS 6.3?

Thank you in advance.

Thanks
Lloyd
*
*
*  <http://www.sunteltech.ca/blog/>*



On Fri, Sep 14, 2012 at 6:48 PM, Michael Giagnocavo <mgg at giagnocavo.net>wrote:

> I found someone with more info on scheduling problems, especially with
> sleep/wait, of which FS does a lot. There's a parameter called
> sched_migration_cost which might be worth investigating.
>
> http://pastebin.freeswitch.com/19903
>
> On a benchmark for sleeps, he says RHEL6 is taking up to 45% more time.
> With the huge number of threads and sleeps FS does, maybe those little
> differences add up:
> http://unix.stackexchange.com/questions/37391/high-cpu-usage-with-cfs
>
> Separately, to everyone that hasn't rebooted their server in the last few
> months, you may still have the leap-second set which will cause lots of CPU
> spinning due to a kernel bug. Running date -s "`date`" should fix that. I
> am pretty sure that freed up at least one core on one of our boxes that was
> still spinning since Jul 1.
>
> We've now upgraded some systems to CentOS 6.3 (with all post release
> updates) and left others at 6.2. Over the next week we'll see if they seem
> to be much different. At the moment, the general CPU usage seems to be
> similar; we'll have to pound some dialer on it and see what happens.
>
> -Michael
>
>
> -----Original Message-----
> From: freeswitch-users-bounces at lists.freeswitch.org [mailto:
> freeswitch-users-bounces at lists.freeswitch.org] On Behalf Of Kristian
> Kielhofner
> Sent: Monday, September 03, 2012 12:42 PM
> To: FreeSWITCH Users Help
> Subject: Re: [Freeswitch-users] RedHat 6.X Performance
>
> Anymore info on specific traffic patterns that cause this?  I've been
> beating up FS on 6.3 for several days now and haven't seen anything unusual
> yet...
>
> On Thu, Aug 30, 2012 at 11:45 PM, Ken Rice <krice at freeswitch.org> wrote:
> > I'm running probably one of the most stripped down FreeSWITCH configs
> > you can run ... Sofia only, bypass media, with a custom C routing
> > module that uses libpq directly...
> >
> > the problem happens at somewhere around 50 to 100 CPS, system % goes
> > thru the roof, and its not IO.. loglevel 0... etc... now its also
> > worth mentioning that on 6.2 the number of context switches for
> > similar amounts of calls on the same physical hardware seems to be
> > double vs something like
> > cent5 or deb6....
> >
> > we're currently trying to get people to submit reports from oprofile
> > so we can isolate the issue... if it were just me, I would chalk it up
> > to something specific on the installation, but , the number of
> > reporters with similar observations is something to take notice of...
> >
> >
>
> --
> Kristian Kielhofner
>
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