[Freeswitch-users] Performance bottleneck

[Anthony Minessale]

Plus there are dozens of events fired per call leg to describe the presence
changes which does not scale well to 50cps.  This is one of the many
shortcomings to SIP, the presence stuff is not scalable.


On Tue, Aug 12, 2008 at 12:59 PM, Michael Jerris <mike at jerris.com> wrote:

> It's going to be the disk io from sqlite.  The presense states are all
> stored in sqlite (or odbc) data source.
> Mike
>
> On Aug 12, 2008, at 1:53 PM, UV wrote:
>
> Turning the presence off did the trick, although it would be important (to
> me, at least) to understand why as it changes the performance significantly.
> Is the presence mechanism waiting for some response from the network?
> I'm assuming it's waiting on something external because I couldn't find any
> CPU activity…
>
> ------------------------------
> *From:* freeswitch-users-bounces at lists.freeswitch.org [
> mailto:freeswitch-users-bounces at lists.freeswitch.org<freeswitch-users-bounces at lists.freeswitch.org>
> ] *On Behalf Of *Anthony Minessale
> *Sent:* Wednesday, August 13, 2008 12:55 AM
> *To:* freeswitch-users at lists.freeswitch.org
> *Subject:* Re: [Freeswitch-users] Performance bottleneck
>
> 9996 is not a good test extension because it does not generate any audio
> unless it gets some.
> 9998 that generates a tone or make up an ext that plays a file is a better
> one.
>
> Processing of the sip calls can be delayed by the presence stuff which is
> very intensive, you can try turning it off and see if you get more calls.
> Also you should compare it to what happens with the test exten first in the
> dial plan.
>
>
> On Tue, Aug 12, 2008 at 2:58 AM, UV <uv at talknet.com.au> wrote:
>
> I'm trying to determine the FS resource bottleneck when operating under
> load (in windows environment), but can't get the FS to load for some unseen
> reason.
>
>
>
> FS environment (a weak PC on purpose):
>
> CPU 2x Intel Pentium 4 3GHz
>
> RAM 2x 512MB DDR II RAM
>
> Chipset - Intel E7221 (Copper River) chipset ICH6R + FWH + BCM5721
>
> LAN 1x Broadcom Giga LAN
>
> Windows 2003 Server – Service pack 2
>
> FS version 9235
>
> Running Release build on highest priority
>
>
>
> Load script:
>
> A different machine running sipP
>
> Running rtp_echo load, 50 cps, limit of 1000 calls, 30sec call duration,
> extension 9996 (echo test):
>
> sipp -rtp_echo -r 50 -l 1000 -d 30000 -s 9996 -sf auc.xml -mp 25000 -i
> 192.168.1.1 -mi 192.168.1.1 192.168.1.2
>
>
>
> Results:
>
> Test ran for 9.5 hours
>
> Total of 48828 calls - all successful
>
> No timeouts, retransmissions or unexpected messages.
>
> Peak was 1003 calls after 4563 seconds (actual 0.2 cps)
>
> Total of 1448750 RTP packets
>
> Average response time: 11min 21 seconds
>
> CPU usage 8% ~ 21%. Average 11%.
>
> Memory usage:
>
> Started with 26,000KB RAM, 27,660KB VM, 25 threads
>
> Peak at 136,000KB RAM,,367,004KB VM, 1024 threads
>
> Ended with 88,220KB RAM, 141,684KB VM, 24 threads
>
> Disk usage wasn't monitored.
>
>
>
> My question is what is slowing the response time so much but keeps the CPU
> running low?
>
>
>
> NB
>
> Following Patrick Grondin's post from 17-Jul-08, I intentionally didn't
> change the default dialplan as I'm trying to load up the CPU.
>
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>
> --
> Anthony Minessale II
>
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-- 
Anthony Minessale II

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