From: Theodore Tso <tytso@mit.edu>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jens Axboe <jens.axboe@oracle.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 0/8][RFC] IO latency/throughput fixes
Date: Mon, 6 Apr 2009 17:26:15 -0400 [thread overview]
Message-ID: <20090406212615.GC8586@mit.edu> (raw)
In-Reply-To: <alpine.LFD.2.00.0904061300310.6058@localhost.localdomain>
On Mon, Apr 06, 2009 at 01:10:50PM -0700, Linus Torvalds wrote:
> where basically each 'sync' on the big file triggers that 15-20s total
> failure. I do wonder if it's actually gotten _worse_ for the data=ordered
> case, but at the same time it does make a pretty compelling argument for
> switching the defaults around.
My first set of patches that I pushed to you were designed to fix
things for data=ordered, and did result in improvements for 2.6.29
versus 2.6.29+ext3-latency-fixes in the data=ordered case. (It was
only in the last day or two that I switched to focusing on improving
things for data=writeback mode.)
I haven't benchmarked 2.6.29 versus 2.6.29 plus *all* of the recent
latency fixes with data=ordered, but I would expect that timings are
the same or better.
- Ted
next prev parent reply other threads:[~2009-04-06 21:26 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-06 12:48 [PATCH 0/8][RFC] IO latency/throughput fixes Jens Axboe
2009-04-06 12:48 ` [PATCH 1/8] block: change the request allocation/congestion logic to be sync/async based Jens Axboe
2009-04-06 12:48 ` [PATCH 2/8] Add WRITE_SYNC_PLUG and SWRITE_SYNC_PLUG Jens Axboe
2009-04-06 12:48 ` [PATCH 3/8] block: fsync_buffers_list() should use SWRITE_SYNC_PLUG Jens Axboe
2009-04-06 12:48 ` [PATCH 4/8] jbd: use WRITE_SYNC_PLUG instead of WRITE_SYNC Jens Axboe
2009-04-06 12:48 ` [PATCH 5/8] jbd2: " Jens Axboe
2009-04-06 12:48 ` [PATCH 6/8] block: enabling plugging on SSD devices that don't do queuing Jens Axboe
2009-04-06 12:48 ` [PATCH 7/8] block: Add flag for telling the IO schedulers NOT to anticipate more IO Jens Axboe
2009-04-06 12:48 ` [PATCH 8/8] block: switch sync_dirty_buffer() over to WRITE_SYNC Jens Axboe
2009-04-06 13:04 ` [PATCH 0/8][RFC] IO latency/throughput fixes Jens Axboe
2009-04-06 13:13 ` Jens Axboe
2009-04-06 15:37 ` Linus Torvalds
2009-04-06 16:57 ` Jens Axboe
2009-04-07 3:28 ` Chris Mason
2009-04-06 15:04 ` Linus Torvalds
2009-04-06 15:10 ` Jens Axboe
2009-04-06 15:45 ` Linus Torvalds
2009-04-06 17:01 ` Jens Axboe
2009-04-06 18:31 ` Theodore Tso
2009-04-06 19:57 ` Linus Torvalds
2009-04-06 20:10 ` Linus Torvalds
2009-04-06 21:26 ` Theodore Tso [this message]
2009-04-06 20:12 ` Hua Zhong
2009-04-06 20:20 ` Linus Torvalds
2009-04-06 21:19 ` Theodore Tso
2009-04-06 21:35 ` Hua Zhong
2009-04-06 22:04 ` Ray Lee
2009-04-06 22:17 ` Linus Torvalds
2009-04-06 23:10 ` Linus Torvalds
2009-04-07 7:51 ` Geert Uytterhoeven
2009-04-07 10:36 ` Ingo Molnar
2009-04-07 14:10 ` Diego Calleja
2009-04-08 12:04 ` Ingo Molnar
2009-04-08 12:56 ` Denys Vlasenko
2009-04-08 13:27 ` Ingo Molnar
2009-04-07 13:35 ` Mark Lord
2009-04-07 14:33 ` Linus Torvalds
2009-04-07 19:24 ` Mark Lord
2009-04-07 19:45 ` Jeff Garzik
2009-04-07 20:53 ` Mike Galbraith
2009-04-09 2:40 ` Eric Sandeen
2009-04-09 14:01 ` Ric Wheeler
2009-04-06 22:25 ` Hua Zhong
2009-04-06 22:48 ` Ray Lee
2009-04-06 22:52 ` Hua Zhong
2009-04-06 23:19 ` Alan Cox
2009-04-07 3:52 ` Chris Mason
2009-04-07 4:13 ` Trenton D. Adams
2009-04-07 4:27 ` Linus Torvalds
2009-04-07 4:48 ` Trenton D. Adams
2009-04-07 5:02 ` Linus Torvalds
2009-04-07 5:23 ` Hua Zhong
2009-04-07 6:27 ` Trenton D. Adams
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