[Users] xlog performance

[Daniel-Constantin Mierla]

Hello,

On 11/07/06 15:20, Max Gregorian wrote:
> Hmm, useful tip. Well worth noting for performance reasons.
>  
> I wonder, do you know if this could have an effect on how information 
> is logged to the log file?
I have
>  
> I am logging in real-time in synchronous mode to a custom log 
> file (using quite a few xlog statements in a routing block) on one of 
> our servers as well, and I am seeing fragmentation in the log messages 
> under high traffic. Timestamps and log messages all skewered and 
> mangled together.
>
>  
> On 11/6/06, *Daniel-Constantin Mierla* <daniel at voice-system.ro 
> <mailto:daniel at voice-system.ro>> wrote:
>
>     I guess it is related to your syslog daemon rather than to xlog
>     functions. Is your syslog configured asynchronous?
>
>     http://voice-system.ro/docs/ser-syslog/ar01s06.html
>
>     Cheers,
>     Daniel
>
>
>     On 11/06/06 05:05, Christian Schlatter wrote:
>     > I recently did some performance testing with openser 1.1 and
>     stumbled
>     > over a rather strange thing. The xlog command from the xlog module
>     > seems to cause a huge performance penalty.
>     >
>     > I have a rather complex config with many routing blocks and mysql
>     > queries with which I can achieve up to 100 calls per second
>     > (authenticated INVITEs) per openser instance. As soon as I add *one*
>     > xlog statement to the config the cps rate goes down to 25, and the
>     > average SIP message response time goes up from <10ms to >200ms.
>     >
>     > Has anyone else observed this behavior or could this issue be caused
>     > by a misconfiguration?
>     >
>     > thanks,
>     > Christian
>     >
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