[Asterisk-Users] IAX2 Vs SIP cpu load

[Mike Lynchfield]

No way.. im keeping it.. be uptime since.. let me see..

uptime
 13:12:56  up 587 days,  13 users,  load average: 0.11, 0.02, 0.01

i think i got an old sun laying around in the noc that been just compiling
since 1973..

lol nah but i remember the old days when a password leak on our hosting
clients would generate loads of 400-500 and would take around 10 minutes to
type stop httpd

10 chars..

but then again if i cold shut .. would take 21 minutes to reboot..

the darn thing weighted around 50 pounds and was the best thing iv seen as
far as load ocud handle..

that 500 load was around 25000 simult users grabbing web pages..

when we replaced with pentium crap it could handle a load of 10-20 not more.

last uptime on it was 800+ days lol.. soon its 3rd birtday.. never changed a
thing on it..

actually i rebooted it then for moving it.


On 6/13/06, Colin Anderson <ColinA at landmarkmasterbuilder.com> wrote:
>
>  2002 called. They want their operating system back. :- ) >
>
> -----Original Message-----
> *From:* Mike Lynchfield [mailto:theclubvoip at gmail.com]
> *Sent:* Tuesday, June 13, 2006 9:42 AM
> *To:* Asterisk Users Mailing List - Non-Commercial Discussion
> *Subject:* Re: [Asterisk-Users] IAX2 Vs SIP cpu load
>
> taskset does not seem to exist on redhad 9 nor freebsd..
>
> ;)
>
> On 6/13/06, Zoa <zoachien at securax.org> wrote:
> >
> >
> >
> > When i did this test ages ago, i found out that iax was worse than sip,
> > but sip was worse than trunked iax.
> >
> > Joachim
> >
> > olin Anderson wrote:
> > > I use IAX2 quite a bit and I haven't really noticed any difference
> > between
> > > IAX2 and SIP. CPU usage in Asterisk is aggravated by transcoding,
> > changing
> > > one audio format to another, and SIP or IAX2 is simply the protocol
> > used to
> > > carry the audio. Any function of Asterisk will be affected by high
> > system
> > > load; if you have a loadaverage of 3, for example, your box is in
> > trouble
> > > regardless of the protocol used.
> > >
> > > Although this may have changed in the newer 1.2.X series of Asterisk,
> > I
> > > believe that Asterisk does not support SMP from the perspective of
> > > dispatching *internal* processes to different CPU's, instead,
> > *external*
> > > processes such as AGI's are balanced out and dispatched automatically
> > to
> > > different CPU's - but this is a kernel thing.
> > >
> > > It's generally well-known that a "fake" SMP machine such as a
> > HyperThreading
> > > CPU affects Asterisk negatively, and best practice is to disable
> > > HyperThreading. However, "real" SMP machines have no trouble (I use a
> > 4 way
> > > Xeon). It's possible to "pin" a process to a specific CPU, and in
> > fact, I do
> > > this to force Asterisk to it's own CPU, and pin all other processes to
> > a
> > > specific CPU that Asterisk does *not* use:
> > >
> > > setasteriskaffinity.sh:
> > >
> > > #!/bin/bash
> > > ASTERISKPID=`ps -A | grep -a -A0 "asterisk"`
> > > taskset 0x00000003 -p  ${ASTERISKPID:0:5}
> > >
> > > This "pins" Asterisk to CPU # 4 on a 4 way system. Repeat for all
> > other
> > > processes, to different CPU's with the affinity mask:
> > >
> > > 0x00000000 = CPU 1
> > > 0x00000001 = CPU 2
> > > 0x00000002 = CPU 3
> > > 0x00000003 = CPU 4
> > >
> > >
> > > -----Original Message-----
> > > From: Jon Schøpzinsky [mailto:jos at detele.dk]
> > > Sent: Tuesday, June 13, 2006 8:14 AM
> > > To: Asterisk Users Mailing List - Non-Commercial Discussion
> > > Subject: [Asterisk-Users] IAX2 Vs SIP cpu load
> > >
> > >
> > > Hello
> > >
> > > Is it correct that IAX2 uses more CPU, than SIP? Also, can it be true
> > that
> > > IAX2 is much more sensitive against high CPU loads?
> > > Also, does Asterisk support and use multiprocessor architectures, such
> > as
> > > Xeon?
> > >
> > >
> > > Regards
> > > Jon
> > >
> > >
> > >
> >
> >
> > _______________________________________________
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> >
> > Asterisk-Users mailing list
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> >
>
>
>
> --
> Mike
> Sales Manager
> http://www.theclubvoip.com
> Making it happen
> 1.888.470.7253
>
> _______________________________________________
> --Bandwidth and Colocation provided by Easynews.com --
>
> Asterisk-Users mailing list
> To UNSUBSCRIBE or update options visit:
>   http://lists.digium.com/mailman/listinfo/asterisk-users
>
>
>


-- 
Mike
Sales Manager
http://www.theclubvoip.com
Making it happen
1.888.470.7253
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