[Freeswitch-users] FreeSWITCH under the Linux 2.6.29 kernel

Paweł Pierścionek pawel at voiceworks.pl
Mon Apr 27 04:46:20 PDT 2009


boot Your kernel with "divider=10 nohz=off" options :)

Recent kernels are tickless which basically causes all freeswitch  
timers/sleeps to fire at requested microsecond intervals.
With nohz kernels You get hundred times more system calls with  
freeswitch :(

On 2009-04-27, at 03:00, Jason White wrote:

> After upgrading to the 2.6.29 kernel (the Debian packaged version),  
> FreeSWITCH
> takes up more CPU time than usual, e.g., 7% as reported by top, and  
> the load
> average is high (e.g., 0.87) even when the machine is idle and there  
> are no
> calls in progress. When top is run, FreeSWITCH appears at the start  
> of the
> list.
>
> Is anybody else seeing this? The proportion of CPU time devoted to  
> system
> calls seems higher than it should be.
>
> I would be interested in reports from anyone else who is running  
> FreeSWITCH
> under Linux 2.6.29.1 or equivalent from a distribution.
>
>
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