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From: Arjan van de Ven <arjan@infradead.org>
To: Sitsofe Wheeler <sitsofe@yahoo.com>
Cc: linux-kernel@vger.kernel.org, Ingo Molnar <mingo@elte.hu>
Subject: Re: How how latent should non-preemptive scheduling be?
Date: Wed, 17 Sep 2008 14:34:39 -0700 [thread overview]
Message-ID: <20080917143439.5ce79534@infradead.org> (raw)
In-Reply-To: <48D1741A.7010508@yahoo.com>
On Wed, 17 Sep 2008 22:18:18 +0100
Sitsofe Wheeler <sitsofe@yahoo.com> wrote:
> Hi,
>
> I have an EeePC 900 (Intel Celeron 900Mhz) and it seems to be
> skipping while playing sound through various desktop apps with a
> 2.6.27rc6 kernel. It is running off an SD card which really shows up
> slow writes but the sound is seemingly skipping even when ext3 is not
> being used. When look at latencytop I often see results similar to
> this:
>
> > Cause Maximum
> > Percentage Scheduler: waiting for cpu 247.2
> > msec 64.6 % futex_wait do_futex sys_futex
> > sysenter_do_call 5.0 msec 24.8 % do_select
> > core_sys_select sys_select sysenter_do_c 4.7 msec 0.7 %
> > do_sys_poll sys_poll sysenter_do_call 4.5
this says you haven't done "make install" on the latencytop directory
so it's not translating things for you.. can you do that please?
next prev parent reply other threads:[~2008-09-17 21:34 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-17 21:18 Sitsofe Wheeler
2008-09-17 21:28 ` Sitsofe Wheeler
2008-09-17 21:34 ` Arjan van de Ven [this message]
2008-09-21 20:56 ` Matt Keenan
2008-09-22 6:50 ` Sitsofe Wheeler
[not found] <fa.vMKgvqjqmYnI2J40GHoTENeYm8U@ifi.uio.no>
[not found] ` <fa.808p0ZtU9DCpeky4KfNS8Drdw9w@ifi.uio.no>
2008-09-17 21:48 ` Sitsofe Wheeler
2008-09-17 21:54 ` Arjan van de Ven
2008-09-17 22:29 ` Sitsofe Wheeler
2008-09-18 2:42 ` Peter Zijlstra
2008-09-18 18:25 ` Sitsofe Wheeler
2008-09-19 8:44 ` Ingo Molnar
[not found] <fa.ERZTl/6uH+mhNoef5fPJKTRjJag@ifi.uio.no>
[not found] ` <fa.PtPFzP5kIJVCCov6YCewrh+o4z4@ifi.uio.no>
[not found] ` <fa.C6WSm5Rh2Nb+Qho7b0qDOZ9RPV8@ifi.uio.no>
[not found] ` <fa.ch6j4qXs/2sFpLkHz5fXrtjTR8c@ifi.uio.no>
[not found] ` <fa.Jx/Ygtm46CVRawlA6OnfYNn6cN0@ifi.uio.no>
2008-09-18 7:26 ` Sitsofe Wheeler
[not found] ` <fa.iIHgL48F3T5VAqFw3mqaf9Pzrs4@ifi.uio.no>
[not found] ` <fa.Td8xkKZKMSMghlJmEYefTRVF2kc@ifi.uio.no>
2008-09-19 11:54 ` Sitsofe Wheeler
2008-09-19 14:20 ` Peter Zijlstra
2008-09-22 11:57 ` Ingo Molnar
2008-09-22 12:07 ` Steven Rostedt
2008-09-23 6:33 ` Sitsofe Wheeler
2008-09-23 11:53 ` Ingo Molnar
2008-09-23 16:30 ` Sitsofe Wheeler
2008-09-23 19:39 ` Sitsofe Wheeler
2008-09-23 22:01 ` Sitsofe Wheeler
2008-09-27 20:48 ` Ingo Molnar
2008-09-28 20:56 ` Sitsofe Wheeler
2008-09-29 8:37 ` Ingo Molnar
2008-09-29 23:11 ` Sitsofe Wheeler
2008-09-30 11:22 ` Ingo Molnar
2008-09-30 13:18 ` Sitsofe Wheeler
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