Optimizing the performance of the Scheduler in the Kernel 3.0

Optimizing the performance of the Scheduler in the Kernel 3.0

[Edward Alvarez]

Greetings,
 <kernelnewbies@kernelnewbies.org>

I want to optimize the performance of the scheduler in the Kernel 3.0 in
order to increase the number of calls a Sip proxy server can handle.

I read about the scheduler in the Kernel 2.6 and was able to find the
variables MIN_TIMESLICE, MAX_TIMESLICE, PRIO_BONUS_RATIO, MAX_SLEEP_AVG and
STARVATION_LIMIT. If I tune this variables I can tweak the performance of
the scheduler, but in the new kernel I cant find any documentation that
allows to successfully modify the scheduler.

I would gladly appreciate any information related to the scheduler in the
new kernel, or documentation about the new variables that are similar to the
ones I mentioned.

Thanks in advance for your time.

Edward Alvarez.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20110922/41ba2c6e/attachment.html 

Optimizing the performance of the Scheduler in the Kernel 3.0

[rohan puri]

On Thu, Sep 22, 2011 at 9:05 PM, Edward Alvarez <edwardalvarezm@gmail.com>wrote:

>
> Greetings,
>  <kernelnewbies@kernelnewbies.org>
>
> I want to optimize the performance of the scheduler in the Kernel 3.0 in
> order to increase the number of calls a Sip proxy server can handle.
>
> I read about the scheduler in the Kernel 2.6 and was able to find the
> variables MIN_TIMESLICE, MAX_TIMESLICE, PRIO_BONUS_RATIO, MAX_SLEEP_AVG and
> STARVATION_LIMIT. If I tune this variables I can tweak the performance of
> the scheduler, but in the new kernel I cant find any documentation that
> allows to successfully modify the scheduler.
>
> I would gladly appreciate any information related to the scheduler in the
> new kernel, or documentation about the new variables that are similar to the
> ones I mentioned.
>
> Thanks in advance for your time.
>
> Edward Alvarez.
>
>
> _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies at kernelnewbies.org
> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>
> There are present sysctl scheduler tunables in dir /proc/sys/kernel/sched_*

You can do the tuning according to your requirement.

But i think there is a better way to increase the calls to the sip server.

To increase the calls to sip server means to maximize the run-time of sip
server process.

This can be done by increasing the nice value of that process, with the
"renice"  command. Only root user can specify the negative values. I think
this should do the job.

Regards,
Rohan Puri
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20110923/8a9831d6/attachment.html 

Optimizing the performance of the Scheduler in the Kernel 3.0

[Mulyadi Santosa]

Hi...

On Thu, Sep 22, 2011 at 22:35, Edward Alvarez <edwardalvarezm@gmail.com> wrote:
>
> Greetings,
>
> I want to optimize the performance of the scheduler in the Kernel 3.0 in
> order to increase the number of calls a Sip proxy server can handle.

You're talking about this SIP -->
http://en.wikipedia.org/wiki/Session_Initiation_Protocol, right?

IMHO, that has very least connection to scheduler tweaking. It's more
about how to do polling/connection handling better programatically.
And perhaps more into memory management.

-- 
regards,

Mulyadi Santosa
Freelance Linux trainer and consultant

blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com