Re: [Asterisk-Users] IAX2 Vs SIP cpu load
On Tuesday 13 June 2006 16:49, Colin Anderson wrote:
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).
This is because HT machines still only have 1 floating point unit -
transcoding uses FP (particularly if MMX is enabled) and any advantage from
executing 2 threads at once is lost when bottlenecking at the FPU.
True SMP has an FPU per processor so this does not then apply
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 0x0003 -p ${ASTERISKPID:0:5}
Why not do this when starting asterisk ?
taskset 0x0003 -- /usr/sbin/asterisk -p
This pins Asterisk to CPU # 4 on a 4 way system. Repeat for all other
processes, to different CPU's with the affinity mask:
0x = CPU 1
0x0001 = CPU 2
0x0002 = CPU 3
0x0003 = CPU 4
It is better to use the 'isolcpus' kernel parameter at bootup to disable a
particular CPU and then put asterisk on that CPU. Trying to set CPU affinity
for all other processes evidently has problems...
Also later kernels now support the concept of 'sets' similar to solaris.
Paul Hewlett
-Original Message-
From: Jon Schøpzinsky [mailto:[EMAIL PROTECTED]
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
___
--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
Re: [Asterisk-Users] IAX2 Vs SIP cpu load
On Tuesday 13 June 2006 17:47, Dinesh Nair wrote: On 06/13/06 22:49 Colin Anderson said the following: 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 isnt asterisk multithreaded ? on a proper OS thread implementation, threads can migrate across CPUs, can't they ? From research (and not from experience) it seems that trying to put different threads on different CPUs has limited advantages due to data locality issues - this evidently has something to do with the current Intel architecture and its use of L1 and L2 caches. asterisk would have benefited in this case from using full processes that could have been individually affined to different CPU's instead of threads. How much difference this would have made is debatable. AFAIK, linux runs all threads of a process (such as asterisk) on the same CPU. Paul Hewlett ___ --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
RE: [Asterisk-Users] IAX2 Vs SIP cpu load
Why not do this when starting asterisk ? taskset 0x0003 -- /usr/sbin/asterisk -p For some reason, I have to specify PID on my version of taskset, so I have to grep it out. ___ --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
Re: [Asterisk-Users] IAX2 Vs SIP cpu load
dual support yes.. however i read a few articles on the fuct that single with double the ram is better..something about the bus or sshare between both processors i think.i would go AMD opteron, but that me. or sunOn 6/13/06, Jon Schøpzinsky [EMAIL PROTECTED] wrote: HelloIs 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? RegardsJon--No virus found in this outgoing message.Checked by AVG Free Edition.Version: 7.1.394 / Virus Database: 268.8.3/362 - Release Date: 12-06-2006___ --Bandwidth and Colocation provided by Easynews.com --Asterisk-Users mailing listTo UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users-- MikeSales Managerhttp://www.theclubvoip.comMaking 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
RE: [Asterisk-Users] IAX2 Vs SIP cpu load
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 0x0003 -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:
0x = CPU 1
0x0001 = CPU 2
0x0002 = CPU 3
0x0003 = CPU 4
-Original Message-
From: Jon Schøpzinsky [mailto:[EMAIL PROTECTED]
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
--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.394 / Virus Database: 268.8.3/362 - Release Date: 12-06-2006
___
--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
___
--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
Re: [Asterisk-Users] IAX2 Vs SIP cpu load
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 0x0003 -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:
0x = CPU 1
0x0001 = CPU 2
0x0002 = CPU 3
0x0003 = CPU 4
-Original Message-
From: Jon Schøpzinsky [mailto:[EMAIL PROTECTED]
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
___
--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
Re: [Asterisk-Users] IAX2 Vs SIP cpu load
taskset does not seem to exist on redhad 9 nor freebsd..;)On 6/13/06, Zoa [EMAIL PROTECTED] wrote:
When i did this test ages ago, i found out that iax was worse than sip,but sip was worse than trunked iax.
Joachimolin 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 0x0003 -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: 0x = CPU 1 0x0001 = CPU 2
0x0002 = CPU 3 0x0003 = CPU 4 -Original Message- From: Jon Schøpzinsky [mailto:[EMAIL PROTECTED]] 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
___--Bandwidth and Colocation provided by Easynews.com --Asterisk-Users mailing listTo UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users-- MikeSales Manager
http://www.theclubvoip.comMaking it happen1.888.470.7253
___
--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
RE: [Asterisk-Users] IAX2 Vs SIP cpu load
2002
called. They want their operating system back. :- )
-Original Message-From: Mike Lynchfield
[mailto:[EMAIL PROTECTED]Sent: Tuesday, June 13, 2006 9:42
AMTo: Asterisk Users Mailing List - Non-Commercial
DiscussionSubject: Re: [Asterisk-Users] IAX2 Vs SIP cpu
loadtaskset does not seem to exist on redhad 9 nor
freebsd..;)
On 6/13/06, Zoa
[EMAIL PROTECTED] wrote:
When
i did this test ages ago, i found out that iax was worse than sip,but
sip was worse than trunked iax. Joachimolin 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 0x0003 -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:
0x = CPU 1 0x0001 = CPU 2 0x0002 = CPU
3 0x0003 = CPU 4 -Original
Message- From: Jon Schøpzinsky [mailto:[EMAIL PROTECTED]] 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
___--Bandwidth
and Colocation provided by Easynews.com
--Asterisk-Users mailing listTo UNSUBSCRIBE or update options
visit: http://lists.digium.com/mailman/listinfo/asterisk-users-- MikeSales Managerhttp://www.theclubvoip.comMaking it
happen1.888.470.7253
___
--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
Re: [Asterisk-Users] IAX2 Vs SIP cpu load
Mike Lynchfield wrote: taskset does not seem to exist on redhad 9 nor freebsd.. ;) On Fedora Core 4, it is provided by the schedutils RPM. Steve ___ --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
Re: [Asterisk-Users] IAX2 Vs SIP cpu load
Go to:
http://www.asteriskguru.com/tutorials/pci_irq_apic_tdm_ticks_te410p_te405p_noise.html
and search for affinity, iirc i explain there how to do it with echo
instead of tasksel.
Zoa
Colin Anderson wrote:
2002 called. They want their operating system back. :- )
-Original Message-
*From:* Mike Lynchfield [mailto:[EMAIL PROTECTED]
*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* [EMAIL PROTECTED]
mailto:[EMAIL PROTECTED] 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 0x0003 -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:
0x = CPU 1
0x0001 = CPU 2
0x0002 = CPU 3
0x0003 = CPU 4
-Original Message-
From: Jon Schøpzinsky [mailto:[EMAIL PROTECTED]
mailto:[EMAIL PROTECTED]]
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
___
--Bandwidth and Colocation provided by Easynews.com
http://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
___
--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
___
--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
Re: [Asterisk-Users] IAX2 Vs SIP cpu load
On 06/13/06 22:49 Colin Anderson said the following: 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 isnt asterisk multithreaded ? on a proper OS thread implementation, threads can migrate across CPUs, can't they ? -- Regards, /\_/\ All dogs go to heaven. [EMAIL PROTECTED](0 0) http://www.openmalaysiablog.com/ +==oOO--(_)--OOo==+ | for a in past present future; do| | for b in clients employers associates relatives neighbours pets; do | | echo The opinions here in no way reflect the opinions of my $a $b. | | done; done | +=+ ___ --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
RE: [Asterisk-Users] IAX2 Vs SIP cpu load
There is work by the devs to threading in the IAX and SIP channels, I believe. I don't know if it's made it's way back to -HEAD or not, maybe kpf can give a definitive answer. I remember reading something by Mark S earlier this year that he had IAX threading working. -Original Message- From: Dinesh Nair [mailto:[EMAIL PROTECTED] Sent: Tuesday, June 13, 2006 9:47 AM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [Asterisk-Users] IAX2 Vs SIP cpu load On 06/13/06 22:49 Colin Anderson said the following: 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 isnt asterisk multithreaded ? on a proper OS thread implementation, threads can migrate across CPUs, can't they ? -- Regards, /\_/\ All dogs go to heaven. [EMAIL PROTECTED](0 0) http://www.openmalaysiablog.com/ +==oOO--(_)--OOo==+ | for a in past present future; do| | for b in clients employers associates relatives neighbours pets; do | | echo The opinions here in no way reflect the opinions of my $a $b. | | done; done | +=+ ___ --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 ___ --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
Re: [Asterisk-Users] IAX2 Vs SIP cpu load
On Tue, 2006-06-13 at 23:47 +0800, Dinesh Nair wrote: On 06/13/06 22:49 Colin Anderson said the following: 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 isnt asterisk multithreaded ? on a proper OS thread implementation, threads can migrate across CPUs, can't they ? Afaik in 1.2.x IAX is single threaded. In 1.4 it is multithreaded. Regards, Patrick ___ --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
Re: [Asterisk-Users] IAX2 Vs SIP cpu load
No way.. im keeping it.. be uptime since.. let me see..uptime13:12:56 up 587 days, 13 users, load average: 0.11, 0.02, 0.01i 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 httpd10 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 [EMAIL PROTECTED] wrote:
2002
called. They want their operating system back. :- )
-Original Message-From: Mike Lynchfield
[mailto:[EMAIL PROTECTED]]Sent: Tuesday, June 13, 2006 9:42
AMTo: Asterisk Users Mailing List - Non-Commercial
DiscussionSubject: Re: [Asterisk-Users] IAX2 Vs SIP cpu
loadtaskset does not seem to exist on redhad 9 nor
freebsd..;)
On 6/13/06, Zoa
[EMAIL PROTECTED] wrote:
When
i did this test ages ago, i found out that iax was worse than sip,but
sip was worse than trunked iax. Joachimolin 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 0x0003 -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:
0x = CPU 1 0x0001 = CPU 2 0x0002 = CPU
3 0x0003 = CPU 4 -Original
Message- From: Jon Schøpzinsky [mailto:[EMAIL PROTECTED]] 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
___--Bandwidth
and Colocation provided by Easynews.com
--Asterisk-Users mailing listTo UNSUBSCRIBE or update options
visit: http://lists.digium.com/mailman/listinfo/asterisk-users
-- MikeSales Managerhttp://www.theclubvoip.comMaking it
happen1.888.470.7253
___--Bandwidth and Colocation provided by Easynews.com --
Asterisk-Users mailing listTo UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users-- MikeSales Managerhttp://www.theclubvoip.comMaking 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
Re: [Asterisk-Users] IAX2 Vs SIP cpu load
Patrick wrote: On Tue, 2006-06-13 at 23:47 +0800, Dinesh Nair wrote: On 06/13/06 22:49 Colin Anderson said the following: 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 isnt asterisk multithreaded ? on a proper OS thread implementation, threads can migrate across CPUs, can't they ? Afaik in 1.2.x IAX is single threaded. In 1.4 it is multithreaded. In 1.2.x IAX uses two threads. One to send, and one to receive. In 1.4 it will use more threads, but I don't know what the new threading model for IAX will be though. ___ --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
