[SR-Users] Huge TLS performance regression migrating from 3.3.7 to 4.2.6

[Daniel-Constantin Mierla]

Hello,

On 03/11/15 19:21, Tristan Mahé wrote:
> Hello Daniel,
>
> Thanks for the new pointers, we will try it !
>
> For the record, we are now able to obtain an almost identical behavior
> ( still a loss of around 3% left )

Does this loss refer to performance?

> by tuning:
> - tls parameters.
> - tcp parameters.
> - optimizations of the config file in many ways.
>
> Those optimisations/tuning were not necessary on 3.3, but it is with 4.2+.

if you want to list what you had to tune, specially the tcp/tls, then we
can analyze if there were changes to those features or the impact is
from somewhere else.

Cheers,
Daniel

>
> Anyway, we are now satisfied with the performance, but any small new
> gain is always good to get :)
>
> Best,
>
> Tristan.
>
> On 11/03/2015 01:50 AM, Daniel-Constantin Mierla wrote:
>> Hello,
>>
>> On 21/10/15 00:37, Tristan Mahé wrote:
>>> Hi Daniel,
>>>
>>> Same config, same server, only kamailio version is different,
>>> starting the timer in the beginning of the config, and ending it
>>> just after the save("location").
>> looking more at it, some few hints.
>>
>> Because the tls does quite a lot of memory operations inside the ssl
>> library, try with mem_join=0.
>>
>> Also, based on the work done by Camille Oudot, you can try with tlsf
>> memory manager, which ensures predictability of duration for memory
>> operations in all cases. f malloc can be faster for common case, but
>> in some corner cases (e.g., lots of tls connections dropped at the
>> same time) can be slower than tlsf.
>>
>> Cheers,
>> Daniel
>> -- 
>> Daniel-Constantin Mierla
>> http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
>> Book: SIP Routing With Kamailio - http://www.asipto.com
>> Kamailio Advanced Training, Nov 30-Dec 2, Berlin - http://asipto.com/kat
>
>
>
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-- 
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Book: SIP Routing With Kamailio - http://www.asipto.com
Kamailio Advanced Training, Nov 30-Dec 2, Berlin - http://asipto.com/kat

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