From: Jens Axboe <axboe@suse.de>
To: Kenneth Chen <kenneth.w.chen@intel.com>
Cc: "'Andrew Morton'" <akpm@osdl.org>,
linux-kernel@vger.kernel.org, thornber@redhat.com
Subject: Re: [PATCH] backing dev unplugging
Date: Wed, 10 Mar 2004 21:20:25 +0100 [thread overview]
Message-ID: <20040310202025.GH15087@suse.de> (raw)
In-Reply-To: <200403102003.i2AK3qm16576@unix-os.sc.intel.com>
On Wed, Mar 10 2004, Kenneth Chen wrote:
> Andrew Morton wrote on Wednesday, March 10, 2004 11:56 AM
> > Jens Axboe <axboe@suse.de> wrote:
> > >
> > > Here's a first cut at killing global plugging of block devices to reduce
> > > the nasty contention blk_plug_lock caused. This introduceds per-queue
> > > plugging, controlled by the backing_dev_info.
> >
> > This is such an improvement over what we have now it isn't funny.
> >
> > Ken, the next -mm is starting to look like linux-3.1.0 so I think it
> > would be best if you could benchmark Jens's patch against 2.6.4-rc2-mm1.
>
> I'm planning on couple experiments: one is just Jens's change on top of
> what we have so we can validate the backing dev unplug. Then we will run
> 2.6.4-rc2-mm1 + Jens's patch.
It'll be hard to apply the patch against anything but -mm, since it
builds (or at least will conflict with) other changes in there. I
deliberately made a -mm version this time though I usually make -linus
and adapt if necessary, for Andrew to get some testing on this.
--
Jens Axboe
next prev parent reply other threads:[~2004-03-10 20:21 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-10 12:45 [PATCH] backing dev unplugging Jens Axboe
2004-03-10 19:55 ` Andrew Morton
2004-03-10 20:03 ` Kenneth Chen
2004-03-10 20:20 ` Jens Axboe [this message]
2004-03-10 20:45 ` Jesse Barnes
2004-03-10 20:49 ` Jens Axboe
[not found] ` <20040310205237.GK15087@suse.de>
2004-03-10 21:01 ` Jesse Barnes
2004-03-10 21:02 ` Jens Axboe
2004-03-10 21:35 ` Jesse Barnes
2004-03-10 23:54 ` Andrew Morton
2004-03-11 0:03 ` David Mosberger
2004-03-11 6:30 ` Jesse Barnes
2004-03-10 20:17 ` Jens Axboe
2004-03-15 5:53 ` Kenneth Chen
2004-03-10 20:14 ` Jeff Garzik
2004-03-10 20:19 ` Jens Axboe
2004-03-10 21:00 ` Andrew Morton
2004-03-10 21:02 ` Jens Axboe
2004-03-10 21:40 ` Miquel van Smoorenburg
2004-03-10 23:05 ` Andrew Morton
2004-03-11 0:05 ` Miquel van Smoorenburg
2004-03-11 0:17 ` Andrew Morton
2004-03-11 6:43 ` Jens Axboe
2004-03-10 22:22 ` Nathan Scott
2004-03-10 23:32 ` Steve Lord
2004-03-11 7:05 ` Jens Axboe
2004-03-11 9:14 ` Joe Thornber
2004-03-11 9:16 ` Jens Axboe
2004-03-11 12:17 ` Christophe Saout
2004-03-11 12:22 ` Jens Axboe
2004-03-11 13:11 ` Christophe Saout
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