linux-kernel - Re: [RFT][PATCH v7] sata

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Message-ID: <Pine.LNX.4.64.0707120212210.25837@twinlark.arctic.org>
Date:	Thu, 12 Jul 2007 02:25:03 -0700 (PDT)
From:	dean gaudet <dean@...tic.org>
To:	Jeff Garzik <jeff@...zik.org>
cc:	linux-ide@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	dave@...dillows.org
Subject: Re: [RFT][PATCH v7] sata_mv: convert to new EH

On Wed, 11 Jul 2007, Jeff Garzik wrote:

> As before, this patch is against 2.6.22 with no other patches needed nor
> applied.
> 
> In this revision, interrupt handling was improved quite a bit,
> particularly for EDMA.  The WARNING in mv_get_crpb_status() goes away,
> because that routine went away.  Its EDMA handling was potentially racy
> as well.  It was replaced with a loop in mv_intr_edma() that guarantees
> it always clears responses out of the queue, not a single response.
> 
> Here's hoping that the WARNING in mv_qc_issue() goes away as well, but I
> am less than 50% confident that will happen.
> 
> The driver is making substantial progress with all these improvements,
> though, in searching for the cause of this hardware behavior :)
> 
> Though if mv_qc_issue() still warns, I would be interested to know if
> this driver works OK if the mv_qc_issue() warning is simply removed at
> that point...

oh very nice... no warnings on boot, and no warnings while i "dd 
if=/dev/sdX of=/dev/null" and i'm seeing 74MB/s+ from each disk on this 
simple read test.

for lack of a better test i started an untar/diff stress test on the 
disks... we'll see how it goes.  (it's based on doug ledford's 
memtest.sh)

thanks!
-dean
Download attachment "sata_mv_v7_boot.txt.gz" of type "APPLICATION/octet-stream" (8591 bytes)