[Freeswitch-users] Freeswitch optimization as a registrar

[David Sugar]

You actually have potentially ~1320 effective "SIP transactions" per
second to support 40000 registered ua's with a 60s refresh.  This is
because the ua sends it's registration refresh unauthenticated.  The
registrar will then push back an authentication challenge request so the
ua can prove its identity, at which point the ua then repeats the same
transaction, but with authentication credentials attached.

rod wrote:
> Hi all,
> 
> I know that freeswitch has not been designed as a pure sip 
> proxy/registrar, but I'm wondering how many subscribers could be handled 
> by FS.
> 
> I setup the following test environment:
>     - Kamailio 1.4.2 as the registrar
>     - all invite requests are flowing through FS, even for a call 
> between 2 registered subscribers. Many reasons for this: the calls CDR 
> are centralized in the same format, I can easily add a billing ID to a 
> call, proceed to recording, set the caller as anonymous if requested...
>     - FS is used also as a SBC
>    
> There is still a lot of work to do, mainly on the call forwarding 
> feature and this is why I'm wondering (simply out of curiosity) what 
> could have been achieved using only FS (easier to setup when only one 
> equipment is involved :) ).
> 
> I'd like to register 40 000 subscribers (if each user registers every 
> 60s, you have approx 670 registration per second, this setup is working 
> on Kamailio).
> 
> I did the following to increase FS performance regarding registration:
>     - put the directory containing users in a RAMDISK
>     - put the db directory in a RAMDISK
> 
> with this I was able to reach 190 registration per second (50 without 
> the ramdisk) but for one SIP account, not too useful :p (for your 
> information I see a huge improvement when switching from 1.0.1 phoenix: 
> 150cps to FS svn 105xx: 190)
> When trying with 25000 SIP accounts, I got no more than 30cps.
> 
> Then I tried to use the odbc mysql for registration, using this I was 
> able to achieve 50cps. The mysql DB is not in a RAMDISK. For all these 
> tests, the presence support has been disabled.
> 
> As the IO performance seems to be a bottleneck, I'd like to know if 
> there is a way to store the registration in memory only without database 
> persistency.
> 
> This thread is there only to share tips, not to complain about FS poor 
> performance as a SIP registrar when compared to Kamailio. If I compare 
> FS to a commercial SBC I'm using in production, I have to say that FS is 
> really a great piece of software (lacks only statistics module, snmp, 
> and heartbeat redundancy for failover).
> 
> regards,
> rod
> 
> 
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> 
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