[sr-dev] [SR-Users] Green VoIP - energy efficiency and performances of v3.0

[Jan Janak]

No, I turned it off.

-Jan

On Thu, May 26, 2011 at 11:50, Daniel-Constantin Mierla
<miconda at gmail.com> wrote:
> Hello,
>
> out of curiosity, since you used the sources from GIT - was memory debugging
> on? It is usually enabled in master branch and that could have some impact
> in memory usage and performances...
>
> Thanks,
> Daniel
>
> On 5/25/11 3:00 PM, Jan Janak wrote:
>>
>> On Wed, May 25, 2011 at 06:54, Jeremya<jeremy at electrosilk.net>  wrote:
>>>
>>> These figures pale into insignificance compared to the power required
>>> for standard SIP devices - typically 5-8 watts per device multiplied by
>>> the number of devices.
>>>
>>> When you factor in Gigabit Ethernet the power ups significantly.
>>>
>>> Optimisation at the server level is not significant on any scale.
>>> Optimisation on communications power: i.e. end-devices, DSL&  switches
>>> is where the power savings are important.
>>
>> Sure, the total power consumption of the whole system is dominated by
>> the power consumption of end-point devices, there's no doubt about
>> that and the paper says that.
>>
>> Nevertheless, as an ITSP you are typically paying for the energy
>> consumed by your servers and in that case knowing what you can expect
>> and how many servers you need is useful. Modern data-center servers
>> have significant base-line power consumption and a portion of that
>> needs to be attributed to the SIP service running on those servers.
>>
>> -Jan
>>
>>> Daniel-Constantin Mierla wrote:
>>>>
>>>> Hello,
>>>>
>>>> Jan Janak conducted a very interesting research project regarding
>>>> energy efficiency of VoIP systems during 2010, a collaboration between
>>>> iptel.org and Columbia University.
>>>>
>>>> The team used the source code from sip-router.org GIT repository from
>>>> January 2010, which corresponds to Kamailio (former OpenSER) and SER
>>>> v3.0. The latest stable series v3.1 shares the same internal
>>>> architecture with v3.0.
>>>>
>>>> As part of the research work, Jan could also gather some figures about
>>>> capacity and performances of v3.0 with a quite complex configuration
>>>> file: etc/sip-router-oob.cfg (involving authentication and NAT
>>>> traversal as well).
>>>>
>>>> You can read the paper about energy efficiency at:
>>>>
>>>> - Green VoIP Article: http://asipto.com/u/2j
>>>>
>>>> The draft notes about capacity and performances of v3.0 are available
>>>> at:
>>>>
>>>> - Performances and Capacity for v3.0 Wiki page: http://asipto.com/u/2k
>>>>
>>>> Some interesting results:
>>>>
>>>> - one instance of SIP server with 500 000 online users (mixed users –
>>>> behind and not NAT routers) – consumed energy 210W
>>>> - one instance of SIP server with 1 000 000 online users (no NAT
>>>> involved) – consumed energy 190W
>>>> - on a 32-bit machine with 4GB of memory and with 2.5GB reserved for
>>>> SIP server, the server could support 43 000 simultaneous TLS
>>>> connections – consumed energy 203W
>>>> - one SIP server instance with 80 000 permanent TCP connections, the
>>>> SIP server could still handle at least 1000 requests per second and a
>>>> connection arrival rate of 1000 new connections per second, done for
>>>> 20 000 new connections. CPU load generated by the SIP server was from
>>>> 6% to 8%.
>>>>
>>>> I added a new section to the draft notes to list the enhancements done
>>>> for the latest stable release (v3.1.x) that contribute to performance
>>>> improvements, like asynchronous TLS, fine tuning of memory for TLS
>>>> connections and raw UDP sockets.
>>>>
>>>> Cheers,
>>>> Daniel
>>>>
>>>
>>> _______________________________________________
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>>> sr-users at lists.sip-router.org
>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>>
>> _______________________________________________
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>
> --
> Daniel-Constantin Mierla
> http://www.asipto.com
>
>