[Freeswitch-users] high load with ~200 fax calls despite low CPU utilization and low IO wait

[Mitch Capper]

You should look to your VM solution provider for assistance(most have
their own performance tools) traditional linux tools do not always
provide proper load information inside of a VM.   Also look at the
load details on the host server to see where its straining generally
when your VM is un responsive its due to he host.

~Mitch

On Thu, Aug 9, 2012 at 2:33 PM, BookBag <asaad2 at gmail.com> wrote:
> I'm running freeswitch also on a vm running centos 6.3 with fusionpbx. I can
> vouch for the sluggishness. What I did is expand the memory. Try expanding
> the memory to 4gb it should help but unfortunately if your on vm your always
> going to get sub par performance.
>
> On Aug 9, 2012 4:58 PM, "Adam Johnston" <ajohnston at blimessaging.com> wrote:
>>
>> Hi all,
>>
>> My FreeSWITCH setup works as follow: I have a service that launches and
>> monitors faxes (via event sockets) on one of a few FreeSWITCH instances.
>> These FreeSWITCH instances are running on dual-core, 2ghz CentOS 5.8 and
>> CentOS 6.0 VMs. The issue is that once I get to ~200 simultaneous faxes on
>> any one FreeSWITCH VM the load average shoots up (typically ~30, although
>> I've seen it get much higher) and the VM becomes sluggish and occasionally
>> unusable.
>>
>> top and sar output confirms that CPU utilization is pretty low, as are IO
>> wait and RAM usage.
>>
>> I'm using a git head from 2012-02-06, although I see the same problem if
>> update to a more current head. On the most recent head I tried (2012-08-06)
>> the issue is worse, and crashes with a backtrace similar to this Jira,
>> http://jira.freeswitch.org/browse/FS-2893 despite my compiling Lua and
>> including the FreeSWITCH bindings.
>>
>> These issues occur on both the CentOS 5.8 and 6.0 VMs. I'm in the process
>> of loading 5.8 onto a physical machine and testing there. It's also worth
>> nothing that this load issue does not occur when I launch faxes from a
>> script on one of the VMs.
>>
>> Has anyone else seen similar high load issues before?
>>
>> Many thanks,
>> Adam Johnston
>>
>> _________________________________________________________________________
>> Professional FreeSWITCH Consulting Services:
>> consulting at freeswitch.org
>> http://www.freeswitchsolutions.com
>>
>> 
>> 
>>
>> Official FreeSWITCH Sites
>> http://www.freeswitch.org
>> http://wiki.freeswitch.org
>> http://www.cluecon.com
>>
>> Join Us At ClueCon - Aug 7-9, 2012
>>
>> FreeSWITCH-users mailing list
>> FreeSWITCH-users at lists.freeswitch.org
>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>> http://www.freeswitch.org
>>
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> 
> 
>
> Official FreeSWITCH Sites
> http://www.freeswitch.org
> http://wiki.freeswitch.org
> http://www.cluecon.com
>
> Join Us At ClueCon - Aug 7-9, 2012
>
> FreeSWITCH-users mailing list
> FreeSWITCH-users at lists.freeswitch.org
> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
> http://www.freeswitch.org
>