From: William Lee Irwin III <wli@holomorphy.com>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: David Chinner <dgc@sgi.com>,
"Eric W. Biederman" <ebiederm@xmission.com>,
clameter@sgi.com, linux-kernel@vger.kernel.org,
Mel Gorman <mel@skynet.ie>, Jens Axboe <jens.axboe@oracle.com>,
Badari Pulavarty <pbadari@gmail.com>,
Maxim Levitsky <maximlevitsky@gmail.com>
Subject: Re: [00/17] Large Blocksize Support V3
Date: Thu, 26 Apr 2007 08:58:40 -0700 [thread overview]
Message-ID: <20070426155840.GU31925@holomorphy.com> (raw)
In-Reply-To: <4630C776.9000804@yahoo.com.au>
On Fri, Apr 27, 2007 at 01:38:30AM +1000, Nick Piggin wrote:
> Or good grounds to increase the sg limit and push for io controller
> manufacturers to do the same. If we have a hack in the kernel that
> mostly works, they won't.
On Fri, Apr 27, 2007 at 01:38:30AM +1000, Nick Piggin wrote:
> Page colouring was always rejected, and lots of people who knew
> better got upset because it was the only way the hardware would go
> fast...
Yes, stunning wisdom there. Reject the speedups.
On Fri, Apr 27, 2007 at 01:38:30AM +1000, Nick Piggin wrote:
> You could put it that way. Or that it is wrong because of the
> fragmenatation problem. Realise that it is somewhat fundamental
> considering that it is basically an unsolvable problem with our
> current kernel assumptions of unconstrained kernel allocations and
> a 1:1 kernel mapping.
Depends on what you consider a solution. A broadly used criterion is
that improves performance significantly in important usage cases.
-- wli
next prev parent reply other threads:[~2007-04-26 15:58 UTC|newest]
Thread overview: 235+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-24 22:21 [00/17] Large Blocksize Support V3 clameter
2007-04-24 22:21 ` [01/17] Remove open coded implementation of memclear_highpage flush clameter
2007-04-24 22:21 ` [02/17] Fix page allocation flags in grow_dev_page() clameter
2007-04-24 22:21 ` [03/17] Fix: find_or_create_page does not spread memory clameter
2007-04-24 22:21 ` [04/17] Free up page->private for compound pages clameter
2007-04-24 22:21 ` [05/17] More compound page features clameter
2007-04-24 22:21 ` [06/17] Fix up handling of Compound head pages clameter
2007-04-24 22:21 ` [07/17] vmstat.c: Support accounting for compound pages clameter
2007-04-24 22:21 ` [08/17] Define functions for page cache handling clameter
2007-04-24 23:00 ` Eric Dumazet
2007-04-25 6:27 ` Christoph Lameter
2007-04-24 22:21 ` [09/17] Convert PAGE_CACHE_xxx -> page_cache_xxx function calls clameter
2007-04-24 22:21 ` [10/17] Variable Order Page Cache: Add clearing and flushing function clameter
2007-04-26 7:02 ` Christoph Lameter
2007-04-26 8:14 ` David Chinner
2007-04-24 22:21 ` [11/17] Readahead support for the variable order page cache clameter
2007-04-24 22:21 ` [12/17] Variable Page Cache Size: Fix up reclaim counters clameter
2007-04-24 22:21 ` [13/17] set_blocksize: Allow to set a larger block size than PAGE_SIZE clameter
2007-04-24 22:21 ` [14/17] Add VM_BUG_ONs to check for correct page order clameter
2007-04-24 22:21 ` [15/17] ramfs: Variable order page cache support clameter
2007-04-24 22:21 ` [16/17] ext2: " clameter
2007-04-24 22:21 ` [17/17] xfs: " clameter
2007-04-25 0:46 ` [00/17] Large Blocksize Support V3 Jörn Engel
2007-04-25 0:47 ` H. Peter Anvin
2007-04-25 3:11 ` William Lee Irwin III
2007-04-25 11:35 ` Jens Axboe
2007-04-25 15:36 ` Christoph Lameter
2007-04-25 17:53 ` Jens Axboe
2007-04-25 18:03 ` Christoph Lameter
2007-04-25 18:05 ` Jens Axboe
2007-04-25 18:14 ` Christoph Lameter
2007-04-25 18:16 ` Jens Axboe
2007-04-25 13:28 ` Mel Gorman
2007-04-25 15:23 ` Christoph Lameter
2007-04-25 22:46 ` Badari Pulavarty
2007-04-26 1:14 ` David Chinner
2007-04-26 1:17 ` David Chinner
2007-04-26 4:51 ` Eric W. Biederman
2007-04-26 5:05 ` Christoph Lameter
2007-04-26 5:44 ` Eric W. Biederman
2007-04-26 6:37 ` Christoph Lameter
2007-04-26 9:16 ` Mel Gorman
2007-04-26 6:38 ` Nick Piggin
2007-04-26 6:46 ` Christoph Lameter
2007-04-26 6:57 ` Nick Piggin
2007-04-26 7:10 ` Christoph Lameter
2007-04-26 7:22 ` Nick Piggin
2007-04-26 7:34 ` Christoph Lameter
2007-04-26 7:48 ` Nick Piggin
2007-04-26 9:20 ` David Chinner
2007-04-26 13:53 ` Avi Kivity
2007-04-26 14:33 ` David Chinner
2007-04-26 14:56 ` Avi Kivity
2007-04-26 15:20 ` Nick Piggin
2007-04-26 17:42 ` Jens Axboe
2007-04-26 18:59 ` Eric W. Biederman
2007-04-26 16:07 ` Christoph Hellwig
2007-04-27 10:05 ` Nick Piggin
2007-04-27 13:06 ` Mel Gorman
2007-04-26 13:50 ` William Lee Irwin III
2007-04-26 18:09 ` Eric W. Biederman
2007-04-26 23:34 ` William Lee Irwin III
2007-04-26 7:48 ` Questions on printk and console_drivers gshan
2007-04-26 10:06 ` [00/17] Large Blocksize Support V3 Mel Gorman
2007-04-26 14:47 ` Nick Piggin
2007-04-26 15:58 ` Christoph Hellwig
2007-04-26 16:05 ` Jens Axboe
2007-04-26 16:16 ` Christoph Hellwig
2007-04-26 13:28 ` Alan Cox
2007-04-26 13:30 ` Jens Axboe
2007-04-29 14:12 ` Matt Mackall
2007-04-28 10:55 ` Pierre Ossman
2007-04-28 15:39 ` Eric W. Biederman
2007-04-26 5:37 ` Nick Piggin
2007-04-26 6:38 ` David Chinner
2007-04-26 6:50 ` Nick Piggin
2007-04-26 8:40 ` Mel Gorman
2007-04-26 8:55 ` Nick Piggin
2007-04-26 10:30 ` Mel Gorman
2007-04-26 10:54 ` Eric W. Biederman
2007-04-26 12:23 ` Mel Gorman
2007-04-26 17:58 ` Christoph Lameter
2007-04-26 18:02 ` Jens Axboe
2007-04-26 16:11 ` Christoph Hellwig
2007-04-26 17:49 ` Eric W. Biederman
2007-04-26 18:03 ` Christoph Lameter
2007-04-26 18:03 ` Jens Axboe
2007-04-26 18:09 ` Christoph Hellwig
2007-04-26 18:12 ` Jens Axboe
2007-04-26 18:24 ` Christoph Hellwig
2007-04-26 18:24 ` Jens Axboe
2007-04-26 18:28 ` Christoph Lameter
2007-04-26 18:29 ` Jens Axboe
2007-04-26 18:35 ` Christoph Lameter
2007-04-26 18:39 ` Jens Axboe
2007-04-26 19:35 ` Eric W. Biederman
2007-04-26 19:42 ` Jens Axboe
2007-04-27 4:05 ` Eric W. Biederman
2007-04-27 10:26 ` Nick Piggin
2007-04-27 13:51 ` Eric W. Biederman
2007-04-26 20:22 ` Mel Gorman
2007-04-27 0:21 ` William Lee Irwin III
2007-04-27 5:16 ` Jens Axboe
2007-04-27 10:38 ` Nick Piggin
2007-04-26 10:10 ` Eric W. Biederman
2007-04-26 13:50 ` David Chinner
2007-04-26 14:40 ` William Lee Irwin III
2007-04-26 15:38 ` Nick Piggin
2007-04-26 15:58 ` William Lee Irwin III [this message]
2007-04-27 9:46 ` Nick Piggin
2007-04-27 0:19 ` Jeremy Higdon
2007-04-26 18:07 ` Christoph Lameter
2007-04-26 18:45 ` Eric W. Biederman
2007-04-26 18:59 ` Christoph Lameter
2007-04-26 19:21 ` Eric W. Biederman
2007-04-26 6:40 ` Christoph Lameter
2007-04-26 6:53 ` Nick Piggin
2007-04-26 7:04 ` David Chinner
2007-04-26 7:07 ` Nick Piggin
2007-04-26 7:11 ` Christoph Lameter
2007-04-26 7:17 ` Nick Piggin
2007-04-26 7:28 ` Christoph Lameter
2007-04-26 7:45 ` Nick Piggin
2007-04-26 18:10 ` Christoph Lameter
2007-04-27 10:08 ` Nick Piggin
2007-04-26 7:07 ` Christoph Lameter
2007-04-26 7:15 ` Nick Piggin
2007-04-26 7:22 ` Christoph Lameter
2007-04-26 7:42 ` Nick Piggin
2007-04-26 10:48 ` Mel Gorman
2007-04-26 12:37 ` Andy Whitcroft
2007-04-26 14:18 ` David Chinner
2007-04-26 15:08 ` Nick Piggin
2007-04-26 15:19 ` William Lee Irwin III
2007-04-26 15:28 ` David Chinner
2007-04-26 14:53 ` William Lee Irwin III
2007-04-26 18:16 ` Christoph Lameter
2007-04-26 18:21 ` Eric W. Biederman
2007-04-27 0:32 ` William Lee Irwin III
2007-04-27 10:22 ` Nick Piggin
2007-04-27 12:58 ` William Lee Irwin III
2007-04-27 13:06 ` Nick Piggin
2007-04-27 14:49 ` William Lee Irwin III
2007-04-26 18:13 ` Christoph Lameter
2007-04-27 10:15 ` Nick Piggin
2007-04-26 14:49 ` William Lee Irwin III
2007-04-26 18:50 ` Maxim Levitsky
2007-04-27 2:04 ` Andrew Morton
2007-04-27 2:27 ` David Chinner
2007-04-27 2:53 ` Andrew Morton
2007-04-27 3:47 ` [00/17] Large Blocksize Support V3 (mmap conceptual discussion) Christoph Lameter
2007-04-27 4:20 ` [00/17] Large Blocksize Support V3 David Chinner
2007-04-27 5:15 ` Andrew Morton
2007-04-27 5:49 ` Christoph Lameter
2007-04-27 6:55 ` Andrew Morton
2007-04-27 7:19 ` Christoph Lameter
2007-04-27 7:26 ` Andrew Morton
2007-04-27 8:37 ` David Chinner
2007-04-27 12:01 ` Christoph Lameter
2007-04-27 16:36 ` David Chinner
2007-04-27 17:34 ` David Chinner
2007-04-27 19:11 ` Andrew Morton
2007-04-28 1:43 ` Nick Piggin
2007-04-28 8:04 ` Peter Zijlstra
2007-04-28 8:22 ` Andrew Morton
2007-04-28 8:32 ` Peter Zijlstra
2007-04-28 8:55 ` Andrew Morton
2007-04-28 9:36 ` Peter Zijlstra
2007-04-28 14:09 ` William Lee Irwin III
2007-04-28 18:26 ` Andrew Morton
2007-04-28 19:19 ` William Lee Irwin III
2007-04-28 21:28 ` Andrew Morton
2007-04-28 3:17 ` David Chinner
2007-04-28 3:49 ` Christoph Lameter
2007-04-28 4:56 ` Andrew Morton
2007-04-28 5:08 ` Christoph Lameter
2007-04-28 5:36 ` Andrew Morton
2007-04-28 6:24 ` Christoph Lameter
2007-04-28 6:52 ` Andrew Morton
2007-04-30 5:30 ` Christoph Lameter
2007-04-28 9:43 ` Alan Cox
2007-04-28 9:58 ` Andrew Morton
2007-04-28 10:21 ` Alan Cox
2007-04-28 10:25 ` Andrew Morton
2007-04-28 11:29 ` Alan Cox
2007-04-28 14:37 ` William Lee Irwin III
2007-04-27 7:22 ` Christoph Lameter
2007-04-27 7:29 ` Andrew Morton
2007-04-27 7:35 ` Christoph Lameter
2007-04-27 7:43 ` Andrew Morton
2007-04-27 11:05 ` Paul Mackerras
2007-04-27 11:41 ` Nick Piggin
2007-04-27 12:12 ` Christoph Lameter
2007-04-27 12:25 ` Nick Piggin
2007-04-27 13:39 ` Christoph Hellwig
2007-04-28 2:27 ` Nick Piggin
2007-04-28 2:39 ` William Lee Irwin III
2007-04-28 2:50 ` Nick Piggin
2007-04-28 3:16 ` William Lee Irwin III
2007-04-28 8:16 ` Christoph Hellwig
2007-04-27 16:48 ` Christoph Lameter
2007-04-27 13:37 ` Christoph Hellwig
2007-04-27 12:14 ` Paul Mackerras
2007-04-27 12:36 ` Nick Piggin
2007-04-27 13:42 ` Christoph Hellwig
2007-04-27 11:58 ` Christoph Lameter
2007-04-27 13:44 ` William Lee Irwin III
2007-04-27 19:15 ` Andrew Morton
2007-04-28 2:21 ` William Lee Irwin III
2007-04-27 6:09 ` David Chinner
2007-04-27 7:04 ` Andrew Morton
2007-04-27 8:03 ` David Chinner
2007-04-27 8:48 ` Andrew Morton
2007-04-27 16:45 ` Theodore Tso
2007-05-04 13:33 ` Eric W. Biederman
2007-05-07 4:29 ` David Chinner
2007-05-07 4:48 ` Eric W. Biederman
2007-05-07 5:27 ` David Chinner
2007-05-07 6:43 ` Eric W. Biederman
2007-05-07 6:49 ` William Lee Irwin III
2007-05-07 7:06 ` William Lee Irwin III
2007-05-08 8:49 ` William Lee Irwin III
2007-05-07 16:06 ` Christoph Lameter
2007-05-07 17:29 ` William Lee Irwin III
2007-05-04 12:57 ` Eric W. Biederman
2007-05-04 13:31 ` Eric W. Biederman
2007-05-04 16:11 ` Christoph Lameter
2007-05-07 4:58 ` David Chinner
2007-05-07 6:56 ` Eric W. Biederman
2007-05-07 15:17 ` Weigert, Daniel
2007-04-27 16:55 ` Theodore Tso
2007-04-27 17:32 ` Nicholas Miell
2007-04-27 18:12 ` William Lee Irwin III
2007-04-28 16:39 ` Maxim Levitsky
2007-04-30 5:23 ` Christoph Lameter
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