[Freeswitch-users] Strange Performance when using as SBC
Anthony Minessale
anthony.minessale at gmail.com
Fri Jan 30 05:56:55 PST 2009
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> 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>55
> ----------(10.10.10.254/24) FS (10.10.20.254/24)--------------<http://10.10.20.254/24%29-------------->vlan56
> -------------------(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
>
> 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"/>
> </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>
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