From: "Joakim Tjernlund" <Joakim.Tjernlund@transmode.se>
To: "'Sergei Shtylyov'" <sshtylyov@ru.mvista.com>
Cc: 'linuxppc-dev Development' <linuxppc-dev@ozlabs.org>
Subject: RE: HR timers on PowerPC 83xx
Date: Fri, 25 Apr 2008 20:29:37 +0200 [thread overview]
Message-ID: <003601c8a702$51535c90$f3fa15b0$@Tjernlund@transmode.se> (raw)
In-Reply-To: <4811FFE4.2020203@ru.mvista.com>
> -----Original Message-----
> From: Sergei Shtylyov [mailto:sshtylyov@ru.mvista.com]
> Sent: den 25 april 2008 18:00
> To: joakim.tjernlund@transmode.se
> Cc: 'linuxppc-dev Development'
> Subject: Re: HR timers on PowerPC 83xx
>
> Joakim Tjernlund wrote:
>
> >>>Trying to understand what is needed to make nanosleep() and friends to
> >>>have better resolution than HZ on my 83xx CPU. Is this possible
> >>>and what CONFIG options do I need to enable? Kernel is 2.6.25
>
> >> Should be possible with CONFIG_HIGH_RES_TIMERS=y.
>
> > What about NO_HZ? Does that setting change anything?
>
> It is independent from HRT and selects the mode where the idle process
> stops timer HZ interrupts from occuring until it's scheduled off CPU.
OK, Thanks
One last question, do I need a current glibc to use
the new resolution? I got 2.3.6 now
Jocke
prev parent reply other threads:[~2008-04-25 18:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-25 14:00 HR timers on PowerPC 83xx Joakim Tjernlund
2008-04-25 14:18 ` Sergei Shtylyov
2008-04-25 14:50 ` Joakim Tjernlund
2008-04-25 15:59 ` Sergei Shtylyov
2008-04-25 18:29 ` Joakim Tjernlund [this message]
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