[Freeswitch-users] Strange Performance when using as SBC
Anthony Minessale
anthony.minessale at gmail.com
Fri Jan 30 09:23:46 PST 2009
I have not compared them directly to be able to answer. I do know that the
more cores the better (even slower ones) because each core divides the
entire workload of the scheduler and increases the total threads that can
work in parallel.
also you can start FS with -hp (high performance) which activates the
round-robin scheduler, increases some ulimits and forces all consumed memory
to be permanently resident with mlockall (no swapping)
On Fri, Jan 30, 2009 at 11:05 AM, peder at networkoblivion.com <
peder at networkoblivion.com> wrote:
> Given the choice between dual core and dual processor, would one work
> better than the other for FS? Assuming roughly the same speed. Or
> would it not really have a measurable difference assuming same speed and
> both Intel?
>
> Anthony Minessale wrote:
> > Which of the 2 machines has the load issue? You said it was one box
> > calling the other.
> >
> > You have 2 major things against you, single CPU and AMD, but you should
> > at least be able to get in the vicinity of 800-1000 calls on a box like
> > that.
> >
> > Are you calling the default 9999? It's not really an appropriate
> > extension for load testing.
> > On the terminating box you should set up a manual extension that is the
> > first one in the dial plan
> > to play a wav file from preferably a ram disk or /tmp
> >
> > If you do plan on using this in production accept nothing less than a
> > multi-core intel machine with at least 4 cores, the more cores the
> > better because that parallel processing is where FS gets it's atvantage.
> >
> >
> >
> > On Fri, Jan 30, 2009 at 5:56 AM, rod <kawarod at laposte.net
> > <mailto:kawarod at laposte.net>> wrote:
> >
> > Dear list,
> >
> > I've been playing with freeswitch for some time (2 months) and the
> fact
> > is that I'm very pleased with the functionnalities of this software.
> >
> > I'd like to use FS as a SBC handling media and I'm doing some tests
> with
> > sipp to load the machine but I'm unable to bridge more than 60 calls
> > without seeing the CPU being loaded at 100%. I'm sure something is
> going
> > wrong with my setup but I'm unable to see what.
> >
> > The test machine has the following specs:
> > Athlon XP 3500+ with 2GB of memory (I know this is not a high end
> > machine :p)
> >
> > Freeswitch:/opt/freeswitch/log# cat /proc/cpuinfo
> > processor : 0
> > vendor_id : AuthenticAMD
> > cpu family : 15
> > model : 95
> > model name : AMD Athlon(tm) 64 Processor 3500+
> > stepping : 2
> > cpu MHz : 2199.973
> > cache size : 512 KB
> > fpu : yes
> > fpu_exception : yes
> > cpuid level : 1
> > wp : yes
> > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr
> pge
> > mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext
> fxsr_opt
> > rdtscp lm 3dnowext 3dnow up rep_good pni cx16 lahf_lm svm extapic
> > cr8_legacy
> > bogomips : 4402.97
> > TLB size : 1024 4K pages
> > clflush size : 64
> > cache_alignment : 64
> > address sizes : 40 bits physical, 48 bits virtual
> > power management: ts fid vid ttp tm stc
> >
> > I installed FS on a fresh debian 64:
> > Linux Freeswitch 2.6.26-1-amd64 #1 SMP Sat Jan 10 17:57:00 UTC 2009
> > x86_64 GNU/Linux
> >
> > I set the ulimit parameters like those on the website:
> > freeswitch at internal> ...
> > Freeswitch:/opt/free-svn/bin# ulimit -a
> > core file size (blocks, -c) unlimited
> > data seg size (kbytes, -d) unlimited
> > scheduling priority (-e) 0
> > file size (blocks, -f) unlimited
> > pending signals (-i) unlimited
> > max locked memory (kbytes, -l) unlimited
> > max memory size (kbytes, -m) unlimited
> > open files (-n) 999999
> > pipe size (512 bytes, -p) 8
> > POSIX message queues (bytes, -q) unlimited
> > real-time priority (-r) 0
> > stack size (kbytes, -s) 244
> > cpu time (seconds, -t) unlimited
> > max user processes (-u) unlimited
> > virtual memory (kbytes, -v) unlimited
> > file locks (-x) unlimited
> >
> >
> > My network setup is the following:
> >
> > SIPP machine (10.10.10.1/24)----------------vlan<http://10.10.10.1/24%29----------------vlan>
> > <http://10.10.10.1/24%29----------------vlan> 55
> > ----------(10.10.10.254/24 <http://10.10.10.254/24>) FS
> > (10.10.20.254/24)--------------<http://10.10.20.254/24%29-------------->
> > <http://10.10.20.254/24%29--------------> vlan56
> > -------------------(10.10.20.100/24 <http://10.10.20.100/24>) OTHER
> > STOCK FS
> >
> >
> > I launched sipp with:
> > sipp -sn uac_pcap -s 9999 -r 10 -l 80 -d 60000 -mi 10.10.10.1 -i
> > 10.10.10.1 -mp 25000 10.10.10.254:5060 <http://10.10.10.254:5060>
> >
> > The dialplan on FS is very simple:
> > <?xml version="1.0" encoding="utf-8"?>
> > <!-- http://wiki.freeswitch.org/wiki/Dialplan_XML -->
> > <include>
> > <context name="default">
> >
> > <extension name="hold_music_bridge">
> > <condition field="destination_number" expression="^9999$">
> > <action application="answer"/>
> > <action application="bridge"
> > data="sofia/external/9999 at 10.10.20.100 <mailto:9999 at 10.10.20.100>"/>
> > </condition>
> > </extension>
> > </context>
> >
> > </include>
> >
> > FreeSWITCH Version 1.0.trunk (11560M) Started.
> > Crash Protection [Disabled]
> > Max Sessions[1000]
> > Session Rate[100]
> > SQL [Enabled]
> >
> >
> > The test is very simple: sipp dial 9999 that matches in my FS
> dialplan
> > and this is bridged to an other FS machine playing music on hold.
> > When I launch "top" I see after 30 to 40 s that FS consumes all the
> CPU
> > ressources (with a mean of 50-60 % before), with 80 calls.
> > When I set 70 calls, I have to wait 70-80 s before seeing the same
> > issue.
> >
> > Presence is set to false on the 2 profile.
> >
> > I have the same issue with FS 1.0.2 that' s why I tried FS 11560.
> >
> > When I use the FS machine as a router to test the packet per second
> > performance, I'm reaching 100Mbps with 8000pps in each direction
> (from
> > vlan 55 to vlan56) with less than 12% CPU. So that I don't think
> there's
> > an issue with the network.
> >
> > Here is an "mpstat -P ALL 1" to show you what's happening suddenly
> with
> > 70 bridge calls:
> > 12:31:26 CPU %user %nice %sys %iowait %irq %soft
> > %steal %idle intr/s
> > 12:31:27 all 3,00 0,00 3,00 0,00 1,00 4,00
> > 0,00 89,00 6241,00
> > 12:31:27 0 3,00 0,00 3,00 0,00 1,00 4,00
> > 0,00 89,00 6241,00
> >
> > 12:31:27 CPU %user %nice %sys %iowait %irq %soft
> > %steal %idle intr/s
> > 12:31:28 all 14,14 0,00 56,57 0,00 2,02 5,05
> > 0,00 22,22 6035,35
> > 12:31:28 0 14,14 0,00 56,57 0,00 2,02 5,05
> > 0,00 22,22 6035,35
> >
> > 12:31:28 CPU %user %nice %sys %iowait %irq %soft
> > %steal %idle intr/s
> > 12:31:29 all 24,75 0,00 67,33 0,00 0,99 6,93
> > 0,00 0,00 5483,17
> > 12:31:29 0 24,75 0,00 67,33 0,00 0,99 6,93
> > 0,00 0,00 5483,17
> >
> >
> > The CPU is going from 89% idle to 0% in less than 2 seconds.
> >
> > I know that I don't have to expect too much from this kind of
> hardware,
> > but it seems strange that the CPU power vanished so suddenly.
> >
> > Thanks a lot for the guys that have read this long mail :p
> >
> > kind regards,
> > rod
> >
> >
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> >
> >
> >
> > --
> > Anthony Minessale II
> >
> > FreeSWITCH http://www.freeswitch.org/
> > ClueCon http://www.cluecon.com/
> >
> > AIM: anthm
> > MSN:anthony_minessale at hotmail.com <MSN%3Aanthony_minessale at hotmail.com>
> > <mailto:MSN%3Aanthony_minessale at hotmail.com<MSN%253Aanthony_minessale at hotmail.com>
> >
> > GTALK/JABBER/PAYPAL:anthony.minessale at gmail.com<PAYPAL%3Aanthony.minessale at gmail.com>
> > <mailto:PAYPAL%3Aanthony.minessale at gmail.com<PAYPAL%253Aanthony.minessale at gmail.com>
> >
> > IRC: irc.freenode.net <http://irc.freenode.net> #freeswitch
> >
> > FreeSWITCH Developer Conference
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> >
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> >
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> >
> >
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--
Anthony Minessale II
FreeSWITCH http://www.freeswitch.org/
ClueCon http://www.cluecon.com/
AIM: anthm
MSN:anthony_minessale at hotmail.com <MSN%3Aanthony_minessale at hotmail.com>
GTALK/JABBER/PAYPAL:anthony.minessale at gmail.com<PAYPAL%3Aanthony.minessale at gmail.com>
IRC: irc.freenode.net #freeswitch
FreeSWITCH Developer Conference
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