Re: [PATCH] backing dev unplugging
[Posted March 10, 2004 by corbet]
| From: |
| Andrew Morton <akpm-AT-osdl.org> |
| To: |
| Jens Axboe <axboe-AT-suse.de> |
| Subject: |
| Re: [PATCH] backing dev unplugging |
| Date: |
| Wed, 10 Mar 2004 11:55:45 -0800 |
| Cc: |
| linux-kernel-AT-vger.kernel.org, kenneth.w.chen-AT-intel.com,
thornber-AT-redhat.com |
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.
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