LARTC - Oct 2002 - Re: LARTC digest, Vol 1 #818 - 8 msgs

> Date: Wed, 16 Oct 2002 20:19:02 +0200
> To: lartc@mailman.ds9a.nl
> Subject: Re: [LARTC] What value to set to Hz ?
> From: Pedro Larroy <piotr@omega.resa.es>
> 
> On Wed, Oct 16, 2002 at 12:17:39PM -0400, raptor wrote:
> > hi,
> > 
> > I was always setting HZ to 1000 when I compiled QoS kernel ... i
knowed it shedules tasks more often and that was my presumtion that this way qos
channel polices will be enforced better (of cource will have greater sheduling
overhead) .... but now u can get much better picture if u read this :
> > 
> > http://kerneltrap.org/node.php?id=464
> > 
> > hope it is interesting
> > 
> > raptor
> > _______________________________________________
> > LARTC mailing list / LARTC@mailman.ds9a.nl
> > http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
> 
> It's better to change /usr/src/linux/include/net/pkt_sched.h
> PSCHED_CLOCK_SOURCE to PSCHED_CPU if you have a cpu with timestamp
> counter (TSC) that will give you Mhz timer granularity.
hi, Pedro 

  would you please tell me how to check out whether 
my cpu has a TSC or not ?

thanks in advance :)
folke.
,S
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folke@sina.com.cn wrote:
> > From: Pedro Larroy <piotr@omega.resa.es>
>> It''s better to change /usr/src/linux/include/net/pkt_sched.h
>> PSCHED_CLOCK_SOURCE to PSCHED_CPU if you have a cpu with timestamp
>> counter (TSC) that will give you Mhz timer granularity.
Unfortunately, only time measurement will be improved, not timer
resolution. So TBF etc. will still burst at HZ.
>   would you please tell me how to check out whether 
> my cpu has a TSC or not ?
grep -w tsc /proc/cpuinfo

- Werner

-- 
  _________________________________________________________________________
 / Werner Almesberger, Buenos Aires, Argentina         wa@almesberger.net /
/_http://www.almesberger.net/____________________________________________/
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