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

[Tristan Mahé]

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 ) 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+.

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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