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Message-ID: <20080323231113.GC41699@sgi.com> Date: Sun, 23 Mar 2008 16:11:13 -0700 From: Jeremy Higdon <jeremy@....com> To: Andrew Morton <akpm@...ux-foundation.org> Cc: David Chinner <dgc@....com>, lkml <linux-kernel@...r.kernel.org>, linux-scsi@...r.kernel.org, Jens Axboe <jens.axboe@...cle.com>, jes@....com Subject: Re: Buffered I/O to block device very slow and other SCSI issues... On Thu, Mar 20, 2008 at 03:20:10AM -0700, Andrew Morton wrote: > On Wed, 19 Mar 2008 18:08:07 -0700 Jeremy Higdon <jeremy@....com> wrote: > > > I also suspect that CTQ has not been set up correctly on this > > > kernel, because: > > > > > > $ cat /sys/block/sdb/device/queue_depth > > > 3 > > > $ ls -l /sys/block/sdb/device/queue_depth > > > -r--r--r-- 1 root root 0 Mar 20 09:59 /sys/block/sdb/device/queue_depth > > > $ > > > > > > It appears to be hard coded to 3 and can't be changed.... > > > > That's a bug in the qla1280 driver. I thought that had gotten fixed. > > It's looking at the wrong mailbox register after setting device parameters. > > > > Was there a patch anywhere? I thought so, but maybe not. I'll go looking for what happened and then forward one, but it'll take a couple of weeks, unless I can get Jes to do it, as I'm going on vacation/holiday for a week. jeremy -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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