From: Ingo Molnar <mingo@elte.hu>
To: "K.R. Foley" <kr@cybsft.com>
Cc: Mark_H_Johnson@raytheon.com, Lee Revell <rlrevell@joe-job.com>,
Free Ekanayaka <free@agnula.org>,
Eric St-Laurent <ericstl34@sympatico.ca>,
linux-kernel <linux-kernel@vger.kernel.org>,
Felipe Alfaro Solana <lkml@felipe-alfaro.com>,
Daniel Schmitt <pnambic@unu.nu>,
"P.O. Gaillard" <pierre-olivier.gaillard@fr.thalesgroup.com>,
nando@ccrma.stanford.edu, luke@audioslack.com, free78@tin.it
Subject: Re: [patch] voluntary-preempt-2.6.9-rc1-bk4-R1
Date: Fri, 10 Sep 2004 21:26:08 +0200 [thread overview]
Message-ID: <20040910192608.GA18761@elte.hu> (raw)
In-Reply-To: <4141EAE5.5080202@cybsft.com>
* K.R. Foley <kr@cybsft.com> wrote:
> I also have some other traces from this system that I have not seen
> before on my slower system. For instance this one where we spend ~204
> usec in __spin_lock_irqsave:
>
> http://www.cybsft.com/testresults/2.6.9-rc1-bk12-S0/trace1.txt
>
> Or this one where we spend ~203 usec in sched_clock. That just doesn't
> seem possible.
>
> http://www.cybsft.com/testresults/2.6.9-rc1-bk12-S0/trace4.txt
seems quite similar to Mark's IDE-DMA related hardware latencies. Does
reducing the DMA mode via hdparm reduce these latencies?
Ingo
next prev parent reply other threads:[~2004-09-10 19:28 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-07 16:54 [patch] voluntary-preempt-2.6.9-rc1-bk4-R1 Mark_H_Johnson
2004-09-08 18:42 ` Ingo Molnar
2004-09-10 2:31 ` K.R. Foley
2004-09-10 17:56 ` K.R. Foley
2004-09-10 19:26 ` Ingo Molnar [this message]
2004-09-10 19:28 ` K.R. Foley
2004-09-09 16:02 ` Ingo Molnar
-- strict thread matches above, loose matches on Subject: below --
2004-09-13 14:44 Mark_H_Johnson
2004-09-14 18:32 ` Ingo Molnar
2004-09-15 15:26 ` Stephen Smalley
2004-09-10 14:28 Mark_H_Johnson
2004-09-10 19:29 ` Ingo Molnar
2004-09-10 12:57 Mark_H_Johnson
2004-09-10 13:10 ` Ingo Molnar
2004-09-09 22:56 Mark_H_Johnson
2004-09-10 12:42 ` Ingo Molnar
2004-09-09 22:41 Mark_H_Johnson
2004-09-09 19:23 Mark_H_Johnson
2004-09-09 19:47 ` Ingo Molnar
2004-09-09 19:02 ` Alan Cox
2004-09-09 18:31 Mark_H_Johnson
2004-09-08 20:33 Mark_H_Johnson
2004-09-08 22:31 ` Alan Cox
2004-09-09 16:44 ` Thomas Charbonnel
2004-09-09 6:27 ` Ingo Molnar
2004-09-09 15:12 ` Ingo Molnar
2004-09-09 15:33 ` Ingo Molnar
2004-09-02 22:14 [patch] voluntary-preempt-2.6.9-rc1-bk4-R0 Ingo Molnar
2004-09-03 0:24 ` Lee Revell
2004-09-03 3:17 ` Eric St-Laurent
2004-09-03 6:26 ` Lee Revell
2004-09-03 6:36 ` Ingo Molnar
2004-09-03 6:49 ` Lee Revell
2004-09-03 7:05 ` Ingo Molnar
2004-09-03 7:40 ` Lee Revell
2004-09-03 7:50 ` Free Ekanayaka
2004-09-03 8:05 ` Lee Revell
2004-09-03 9:25 ` [patch] voluntary-preempt-2.6.9-rc1-bk4-R1 Ingo Molnar
2004-09-03 9:50 ` Luke Yelavich
2004-09-03 10:29 ` Ingo Molnar
2004-09-03 10:43 ` Luke Yelavich
2004-09-03 11:33 ` Thomas Charbonnel
2004-09-03 11:49 ` Ingo Molnar
2004-09-03 12:05 ` Thomas Charbonnel
2004-09-03 16:14 ` Thomas Charbonnel
2004-09-03 17:36 ` Thomas Charbonnel
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