[Freeswitch-users] high load with ~200 fax calls despite low CPU utilization and low IO wait
mitch.capper at gmail.com
Fri Aug 10 02:57:17 MSD 2012
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.
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
>> 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
>> Official FreeSWITCH Sites
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