From: James Bottomley <James.Bottomley@HansenPartnership.com>
To: Steven Whitehouse <swhiteho@redhat.com>
Cc: Tejun Heo <tj@kernel.org>,
linux-kernel@vger.kernel.org, Jens Axboe <jaxboe@fusionio.com>
Subject: Re: Strange block/scsi/workqueue issue
Date: Tue, 12 Apr 2011 15:43:56 -0500 [thread overview]
Message-ID: <1302641036.2604.40.camel@mulgrave.site> (raw)
In-Reply-To: <1302640226.2661.34.camel@dolmen>
On Tue, 2011-04-12 at 21:30 +0100, Steven Whitehouse wrote:
> > Hmm, wrong signal for no elevator then. How about this?
> >
> > James
> >
> That seems to do the trick... the box has been booted for several
> minutes now and no sign of anything untoward so far :-)
>
> Below is the cumulative patch which I now have applied to the kernel.
> Many thanks for all your help in debugging this, its greatly
> appreciated :-)
Heh, you're welcome, but this is for some value of debug. There's still
something strange going on on your box causing extreme delays in the way
we do stuff. I took advantage of the delays to explore some races in
block and SCSI, which is what got fixed .. I've still no idea what the
actual root cause of the delays is.
Now we need to huddle and decide what we're doing in block and SCSI. I
think Tejun's patch with the moved signal for queue destruction patch
would probably work as well.
James
next prev parent reply other threads:[~2011-04-12 20:44 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-11 14:56 Strange block/scsi/workqueue issue Steven Whitehouse
2011-04-11 17:18 ` Tejun Heo
2011-04-11 17:29 ` Jens Axboe
2011-04-11 17:52 ` Steven Whitehouse
2011-04-12 0:14 ` Tejun Heo
2011-04-12 8:49 ` Steven Whitehouse
2011-04-12 0:47 ` James Bottomley
2011-04-12 2:51 ` Tejun Heo
2011-04-12 4:49 ` James Bottomley
2011-04-12 5:02 ` James Bottomley
2011-04-12 8:42 ` Steven Whitehouse
2011-04-12 13:42 ` James Bottomley
2011-04-12 14:06 ` Steven Whitehouse
2011-04-12 15:14 ` James Bottomley
2011-04-12 16:04 ` Steven Whitehouse
2011-04-12 16:27 ` James Bottomley
2011-04-12 16:51 ` Steven Whitehouse
2011-04-12 17:41 ` James Bottomley
2011-04-12 18:33 ` Steven Whitehouse
2011-04-12 19:56 ` James Bottomley
2011-04-12 20:30 ` Steven Whitehouse
2011-04-12 20:43 ` James Bottomley [this message]
2011-04-13 5:18 ` Tejun Heo
2011-04-13 6:06 ` Tejun Heo
2011-04-13 9:20 ` Steven Whitehouse
2011-04-13 14:00 ` Steven Whitehouse
2011-04-13 17:01 ` James Bottomley
2011-04-13 19:35 ` Steven Whitehouse
2011-04-13 20:12 ` Jens Axboe
2011-04-13 20:17 ` James Bottomley
2011-04-22 18:01 ` Tejun Heo
2011-04-22 18:06 ` James Bottomley
2011-04-22 18:30 ` Tejun Heo
2011-05-31 6:05 ` Anton V. Boyarshinov
2011-04-22 18:03 ` Tejun Heo
2011-04-12 5:15 ` Tejun Heo
2011-04-12 15:15 ` James Bottomley
2011-04-13 5:11 ` Tejun Heo
2011-04-13 14:15 ` James Bottomley
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