From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Ingo Molnar <mingo@elte.hu>
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 Mailing List <linux-kernel@vger.kernel.org>,
"K.R. Foley" <kr@cybsft.com>,
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: Thu, 09 Sep 2004 20:02:00 +0100 [thread overview]
Message-ID: <1094756507.14657.64.camel@localhost.localdomain> (raw)
In-Reply-To: <20040909194737.GA2778@elte.hu>
On Iau, 2004-09-09 at 20:47, Ingo Molnar wrote:
> there are also tools that tweak chipsets directly - powertweak and the
> PCI latency settings. Maybe something tweaks the IDE controller just the
> right way. Also, try disabling specific controller support in the
> .config (or turn it on) - by chance the generic IDE code could program
> the IDE controller in a way that generates nicer DMA.
Do not tweak your IDE controller pci latency without making a backup if
its anything but the base motherboard chipset. Not unless you make
backups first and test it very hard.
Its a particularly popular area for errata.
You could also try lower DMA modes, I don't know if that will help or
not but UDMA133 is essentially "one entire PCI 32/33Mhz bus worth of
traffic so the effects are not too suprising. IDE control ports can give
you long stalls too especially if IORDY is in use.
Alan
next prev parent reply other threads:[~2004-09-09 20:15 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-09 19:23 [patch] voluntary-preempt-2.6.9-rc1-bk4-R1 Mark_H_Johnson
2004-09-09 19:47 ` Ingo Molnar
2004-09-09 19:02 ` Alan Cox [this message]
-- 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 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
2004-09-07 16:54 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
2004-09-10 19:28 ` K.R. Foley
2004-09-09 16:02 ` 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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