[Freeswitch-users] FreeSwitch - Performance issues
Tahir Almas
tahir at ictinnovations.com
Thu Aug 20 08:55:26 MSD 2015
Try testing with CentOS 6.x or Debian distribution sutiable for
server type applications
regards
*Tahir Almas*
Managing Partner
ICT Innovations
http://www.ictinnovations.com
Leveraging open source in ICT
On Sat, Aug 15, 2015 at 3:00 PM, Michael Jerris <mike at jerris.com> wrote:
> There are multiple known issues with Ubuntu 12.04. We reccomend Debian 8
> Jessie.
>
>
> On Friday, August 14, 2015, Shaun Stokes <shaun.stokes at itec-support.co.uk>
> wrote:
>
>> Hi,
>>
>>
>>
>> We’re experiencing performance issues with FreeSwitch, our target is 500
>> concurrent sessions, but at the moment this starts to bottleneck around 30.
>>
>>
>>
>> Host system:
>>
>> Windows Server 2012 Hyper-V Host
>>
>> AMD Opteron 4386 (2 processors) – 16 cores total
>>
>> 128GB DDR3
>>
>> 2TB RAID 5 (700MB/s tested read and write throughput)
>>
>>
>>
>> FreeSwitch Virtual Machine:
>>
>> FreeSwitch 1.4.15
>>
>> Ubuntu 12.04 LTS
>>
>> 16 Virtual cores (high priority)
>>
>> 2GB RAM (would assign more but FreeSwitch never seems to use much)
>>
>> 500GB HD (on VHDX)
>>
>>
>>
>> After around 30 concurrent sessions we begin to see CPU spikes almost
>> every time a new call comes in, as the sessions increase the size and
>> frequency of the CPU spikes also increase. The system seems to be able to
>> sit comfortably with over 100 concurrent sessions and 80% idle CPU,
>> providing we don’t have any new calls hitting the platform. The spikes are
>> causing audio (RTP) to stutter or in some cases drop completely for a few
>> seconds.
>>
>>
>>
>> The FreeSwitch spikes are occurring on all 16 cores, we have been
>> monitoring the system using htop and mpstat.
>>
>>
>>
>> This is an example of when we receive an inbound call while we have 34
>> concurrent sessions:
>>
>> 14:26:04 CPU %usr %nice %sys %iowait %irq %soft %steal
>> %guest %idle
>>
>> 14:26:05 all 1.67 0.00 27.34 0.00 0.25 0.00
>> 0.00 0.00 70.74
>>
>> 14:26:05 0 1.00 0.00 28.00 0.00 0.00 0.00
>> 0.00 0.00 71.00
>>
>> 14:26:05 1 0.99 0.00 26.73 0.00 0.00 0.00
>> 0.00 0.00 72.28
>>
>> 14:26:05 2 0.99 0.00 26.73 0.00 0.00 0.00
>> 0.00 0.00 72.28
>>
>> 14:26:05 3 3.92 0.00 26.47 0.00 0.00 0.00
>> 0.00 0.00 69.61
>>
>> 14:26:05 4 0.99 0.00 25.74 0.00 1.98 0.00
>> 0.00 0.00 71.29
>>
>> 14:26:05 5 0.99 0.00 26.73 0.00 0.99 0.00
>> 0.00 0.00 71.29
>>
>> 14:26:05 6 0.00 0.00 26.47 0.00 0.98 0.00
>> 0.00 0.00 72.55
>>
>> 14:26:05 7 0.00 0.00 26.73 0.00 0.00 0.00
>> 0.00 0.00 73.27
>>
>> 14:26:05 8 3.96 0.00 27.72 0.00 0.00 0.00
>> 0.00 0.00 68.32
>>
>> 14:26:05 9 2.00 0.00 27.00 0.00 0.00 0.00
>> 0.00 0.00 71.00
>>
>> 14:26:05 10 6.00 0.00 32.00 0.00 0.00 0.00
>> 0.00 0.00 62.00
>>
>> 14:26:05 11 1.96 0.00 27.45 0.00 0.00 0.00
>> 0.00 0.00 70.59
>>
>> 14:26:05 12 0.99 0.00 26.73 0.00 0.00 0.00
>> 0.00 0.00 72.28
>>
>> 14:26:05 13 1.00 0.00 28.00 0.00 0.00 0.00
>> 0.00 0.00 71.00
>>
>> 14:26:05 14 0.00 0.00 27.00 0.00 0.00 0.00
>> 0.00 0.00 73.00
>>
>>
>>
>> This is when the system is not receiving an inbound call but is sitting
>> comfortably at 34 concurrent sessions:
>>
>> 14:25:57 CPU %usr %nice %sys %iowait %irq %soft %steal
>> %guest %idle
>>
>> 14:25:58 all 0.87 0.00 0.62 0.00 0.12 0.00
>> 0.00 0.00 98.39
>>
>> 14:25:58 0 0.99 0.00 0.99 0.00 0.00 0.00
>> 0.00 0.00 98.02
>>
>> 14:25:58 1 0.99 0.00 0.99 0.00 0.00 0.00
>> 0.00 0.00 98.02
>>
>> 14:25:58 2 0.98 0.00 0.98 0.00 0.00 0.00
>> 0.00 0.00 98.04
>>
>> 14:25:58 3 0.00 0.00 0.99 0.00 0.00 0.00
>> 0.00 0.00 99.01
>>
>> 14:25:58 4 0.00 0.00 0.00 0.00 1.98 0.00
>> 0.00 0.00 98.02
>>
>> 14:25:58 5 0.00 0.00 0.00 0.00 0.99 0.00
>> 0.00 0.00 99.01
>>
>> 14:25:58 6 0.00 0.00 0.99 0.00 0.00 0.00
>> 0.00 0.00 99.01
>>
>> 14:25:58 7 0.00 0.00 0.99 0.00 0.00 0.00
>> 0.00 0.00 99.01
>>
>> 14:25:58 8 5.00 0.00 1.00 0.00 0.00 0.00
>> 0.00 0.00 94.00
>>
>> 14:25:58 9 1.00 0.00 0.00 0.00 0.00 0.00
>> 0.00 0.00 99.00
>>
>> 14:25:58 10 1.00 0.00 0.00 0.00 0.00 0.00
>> 0.00 0.00 99.00
>>
>> 14:25:58 11 0.99 0.00 0.99 0.00 0.00 0.00
>> 0.00 0.00 98.02
>>
>> 14:25:58 12 0.00 0.00 0.00 0.00 0.00 0.00
>> 0.00 0.00 100.00
>>
>> 14:25:58 13 1.98 0.00 0.99 0.00 0.00 0.00
>> 0.00 0.00 97.03
>>
>> 14:25:58 14 0.00 0.00 0.00 0.00 0.00 0.00
>> 0.00 0.00 100.00
>>
>> 14:25:58 15 0.00 0.00 0.00 0.00 0.00 0.00
>> 0.00 0.00 100.00
>>
>>
>>
>> We’re using FreeSwitch in multi-tenant mode, we have tried dedicating a
>> single VM for one tenancy but still experience the issue. My assumption has
>> been that this will be due to the dialplan, I’ve optimized this slightly by
>> writing LUA scripts to handle some of the inbound calls this appears to
>> take away some of the load but we’re still using the internal dialplans for
>> each tenancy (tenancy dialplans have an average of 300 entries).
>>
>>
>>
>> We are using the following arguments when running FreeSwitch:
>>
>> -rp –nc –nonat
>>
>>
>>
>> I’ve seen another post which says we should operate FreeSwitch in High
>> Performance mode using –hp but can’t find anything information about this,
>> is this still a valid argument to use with FreeSwitch?
>>
>>
>>
>> Has anyone experienced similar performance issues before or have any
>> advice?
>>
>>
>>
>> Hope someone may be able help.
>>
>>
>>
>> Thanks,
>>
>> Shaun
>>
>> ______________________________________________________________________
>> This message has been checked for all known viruses by MessageLabs Virus
>> Scanning Service.
>> ______________________________________________________________________
>>
>
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