From: Wu Fengguang <wfg@mail.ustc.edu.cn>
To: kernel@kolivas.org
Cc: Diego Calleja <diegocg@gmail.com>,
linux-kernel@vger.kernel.org, folkert@vanheusden.com, ak@suse.de,
akpm@osdl.org, mstone@mathom.us
Subject: Re: [PATCH 00/33] Adaptive read-ahead V12
Date: Mon, 29 May 2006 11:04:45 +0800 [thread overview]
Message-ID: <348871884.29158@ustc.edu.cn> (raw)
Message-ID: <20060529030445.GB5994@mail.ustc.edu.cn> (raw)
In-Reply-To: <1148855503.447a24cface24@vds.kolivas.org>
On Mon, May 29, 2006 at 08:31:43AM +1000, kernel@kolivas.org wrote:
> Quoting Diego Calleja <diegocg@gmail.com>:
>
> > That leaves another question that I (a poor user) may have missed: Why is
> > adaptive read-ahead compile-time configurable instead of completely
> > replacing
> > the old system?
>
> That was done to appease the users out there that had worse performance with it.
> In the early stages of development of this code it was rather detrimental on an
> ordinary desktop. Fortunately that seems to have gotten a lot better. I don't
> think the final version should be a compile time option. It's either "adaptive"
> and better everywhere or it's not.
Hehe, I have a dream - that it helps *everywhere* ;-)
Wu
next prev parent reply other threads:[~2006-05-29 3:04 UTC|newest]
Thread overview: 108+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-24 11:12 [PATCH 00/33] Adaptive read-ahead V12 Wu Fengguang
2006-05-24 11:12 ` Wu Fengguang
2006-05-25 15:44 ` Andrew Morton
2006-05-25 19:26 ` Michael Stone
2006-05-25 19:40 ` David Lang
2006-05-25 22:01 ` Andrew Morton
2006-05-25 20:28 ` David Lang
2006-05-26 0:48 ` Michael Stone
2006-05-26 1:19 ` Wu Fengguang
2006-05-26 1:19 ` Wu Fengguang
2006-05-26 2:10 ` Jon Smirl
2006-05-26 3:14 ` Nick Piggin
2006-05-26 14:00 ` Andi Kleen
2006-05-26 16:25 ` Andrew Morton
2006-05-26 23:54 ` Folkert van Heusden
2006-05-27 0:00 ` Con Kolivas
2006-05-27 0:08 ` Con Kolivas
2006-05-28 22:20 ` Diego Calleja
2006-05-28 22:31 ` kernel
2006-05-29 3:04 ` Wu Fengguang [this message]
2006-05-29 3:04 ` Wu Fengguang
2006-05-24 11:12 ` [PATCH 02/33] radixtree: look-aside cache Wu Fengguang
2006-05-24 11:12 ` Wu Fengguang
2006-05-24 11:12 ` [PATCH 03/33] radixtree: hole scanning functions Wu Fengguang
2006-05-24 11:12 ` Wu Fengguang
2006-05-25 16:19 ` Andrew Morton
2006-05-26 7:04 ` Wu Fengguang
2006-05-26 7:04 ` Wu Fengguang
2006-05-26 11:05 ` Wu Fengguang
2006-05-26 11:05 ` Wu Fengguang
2006-05-26 16:19 ` Andrew Morton
2006-05-24 11:12 ` [PATCH 04/33] readahead: page flag PG_readahead Wu Fengguang
2006-05-24 11:12 ` Wu Fengguang
2006-05-25 16:23 ` Andrew Morton
2006-05-26 7:06 ` Wu Fengguang
2006-05-26 7:06 ` Wu Fengguang
2006-05-24 12:27 ` Peter Zijlstra
2006-05-24 12:37 ` Wu Fengguang
2006-05-24 12:37 ` Wu Fengguang
2006-05-24 12:48 ` Peter Zijlstra
2006-05-24 11:12 ` [PATCH 05/33] readahead: refactor do_generic_mapping_read() Wu Fengguang
2006-05-24 11:12 ` Wu Fengguang
2006-05-24 11:12 ` [PATCH 06/33] readahead: refactor __do_page_cache_readahead() Wu Fengguang
2006-05-24 11:12 ` Wu Fengguang
2006-05-25 16:30 ` Andrew Morton
2006-05-25 22:33 ` Paul Mackerras
2006-05-25 22:40 ` Andrew Morton
2006-05-26 7:13 ` Wu Fengguang
2006-05-26 7:13 ` Wu Fengguang
2006-05-24 11:12 ` [PATCH 07/33] readahead: insert cond_resched() calls Wu Fengguang
2006-05-24 11:12 ` Wu Fengguang
2006-05-24 11:12 ` [PATCH 08/33] readahead: common macros Wu Fengguang
2006-05-24 11:12 ` Wu Fengguang
2006-05-25 5:56 ` Nick Piggin
2006-05-25 10:41 ` Wu Fengguang
2006-05-25 10:41 ` Wu Fengguang
2006-05-26 3:33 ` Nick Piggin
2006-05-26 6:59 ` Wu Fengguang
2006-05-26 6:59 ` Wu Fengguang
2006-05-25 13:42 ` Wu Fengguang
2006-05-25 13:42 ` Wu Fengguang
2006-05-25 14:38 ` Andrew Morton
2006-05-25 16:33 ` Andrew Morton
2006-05-24 11:12 ` [PATCH 09/33] readahead: events accounting Wu Fengguang
2006-05-24 11:12 ` Wu Fengguang
2006-05-25 16:36 ` Andrew Morton
2006-05-26 7:09 ` Wu Fengguang
2006-05-26 7:09 ` Wu Fengguang
2006-05-27 13:20 ` Wu Fengguang
2006-05-27 13:20 ` Wu Fengguang
2006-05-29 8:19 ` Martin Peschke
2006-05-24 11:12 ` [PATCH 10/33] readahead: support functions Wu Fengguang
2006-05-24 11:12 ` Wu Fengguang
2006-05-25 5:13 ` Nick Piggin
2006-05-25 11:13 ` Wu Fengguang
2006-05-25 11:13 ` Wu Fengguang
2006-05-25 16:48 ` Andrew Morton
2006-05-26 7:31 ` Wu Fengguang
2006-05-26 7:31 ` Wu Fengguang
2006-05-24 11:12 ` [PATCH 11/33] readahead: sysctl parameters Wu Fengguang
2006-05-24 11:12 ` Wu Fengguang
2006-05-25 4:50 ` [PATCH 12/33] readahead: min/max sizes Nick Piggin
2006-05-25 12:12 ` Wu Fengguang
2006-05-25 12:12 ` Wu Fengguang
2006-05-24 11:12 ` [PATCH 13/33] readahead: state based method - aging accounting Wu Fengguang
2006-05-24 11:12 ` Wu Fengguang
2006-05-26 17:04 ` Andrew Morton
2006-05-27 6:22 ` Wu Fengguang
2006-05-27 6:22 ` Wu Fengguang
2006-05-27 7:00 ` Andrew Morton
2006-05-27 7:22 ` Wu Fengguang
2006-05-27 7:22 ` Wu Fengguang
2006-05-24 11:13 ` [PATCH 14/33] readahead: state based method - data structure Wu Fengguang
2006-05-24 11:13 ` Wu Fengguang
2006-05-25 6:03 ` Nick Piggin
2006-05-25 10:43 ` Wu Fengguang
2006-05-25 10:43 ` Wu Fengguang
2006-05-26 17:05 ` Andrew Morton
2006-05-27 7:02 ` Wu Fengguang
2006-05-27 7:02 ` Wu Fengguang
2006-05-27 8:27 ` Wu Fengguang
2006-05-27 8:27 ` Wu Fengguang
2006-05-24 11:13 ` [PATCH 15/33] readahead: state based method - routines Wu Fengguang
2006-05-24 11:13 ` Wu Fengguang
2006-05-26 17:15 ` Andrew Morton
2006-05-27 2:06 ` Wu Fengguang
2006-05-27 2:06 ` Wu Fengguang
2006-05-24 11:13 ` [PATCH 17/33] readahead: context based method Wu Fengguang
2006-05-24 11:13 ` Wu Fengguang
2006-05-25 5:26 ` Nick Piggin
2006-05-25 8:03 ` Wu Fengguang
2006-05-25 8:03 ` Wu Fengguang
2006-05-26 17:23 ` Andrew Morton
2006-05-27 2:12 ` Wu Fengguang
2006-05-27 2:12 ` Wu Fengguang
2006-05-26 17:27 ` Andrew Morton
2006-05-27 8:04 ` Wu Fengguang
2006-05-27 8:04 ` Wu Fengguang
2006-05-24 12:37 ` Peter Zijlstra
2006-05-24 13:33 ` Wu Fengguang
2006-05-24 13:33 ` Wu Fengguang
2006-05-24 15:53 ` Peter Zijlstra
2006-05-25 1:25 ` Wu Fengguang
2006-05-25 1:25 ` Wu Fengguang
2006-05-24 11:13 ` [PATCH 18/33] readahead: initial method - guiding sizes Wu Fengguang
2006-05-24 11:13 ` Wu Fengguang
2006-05-24 11:13 ` [PATCH 19/33] readahead: initial method - thrashing guard size Wu Fengguang
2006-05-24 11:13 ` Wu Fengguang
2006-05-24 11:13 ` [PATCH 20/33] readahead: initial method - expected read size Wu Fengguang
2006-05-24 11:13 ` Wu Fengguang
2006-05-25 5:34 ` [PATCH 22/33] readahead: initial method Nick Piggin
2006-05-25 8:59 ` Wu Fengguang
2006-05-25 8:59 ` Wu Fengguang
2006-05-26 17:29 ` [PATCH 20/33] readahead: initial method - expected read size Andrew Morton
2006-05-27 6:38 ` Wu Fengguang
2006-05-27 6:38 ` Wu Fengguang
2006-05-24 11:13 ` [PATCH 23/33] readahead: backward prefetching method Wu Fengguang
2006-05-24 11:13 ` Wu Fengguang
2006-05-26 17:37 ` Nate Diller
2006-05-26 19:22 ` Nathan Scott
2006-05-28 12:30 ` Wu Fengguang
2006-05-28 12:30 ` Wu Fengguang
2006-05-24 11:13 ` [PATCH 24/33] readahead: seeking reads method Wu Fengguang
2006-05-24 11:13 ` Wu Fengguang
2006-05-24 11:13 ` [PATCH 25/33] readahead: thrashing recovery method Wu Fengguang
2006-05-24 11:13 ` Wu Fengguang
2006-05-24 11:13 ` [PATCH 26/33] readahead: call scheme Wu Fengguang
2006-05-24 11:13 ` Wu Fengguang
2006-05-24 11:13 ` [PATCH 27/33] readahead: laptop mode Wu Fengguang
2006-05-24 11:13 ` Wu Fengguang
2006-05-26 17:38 ` Andrew Morton
2006-05-24 11:13 ` [PATCH 28/33] readahead: loop case Wu Fengguang
2006-05-24 11:13 ` Wu Fengguang
2006-05-24 14:01 ` Limin Wang
2006-05-25 15:48 ` wfg
2006-05-25 15:48 ` wfg
2006-05-24 11:13 ` [PATCH 29/33] readahead: nfsd case Wu Fengguang
2006-05-24 11:13 ` Wu Fengguang
2006-05-24 11:13 ` [PATCH 30/33] readahead: turn on by default Wu Fengguang
2006-05-24 11:13 ` Wu Fengguang
2006-05-24 11:13 ` [PATCH 31/33] readahead: debug radix tree new functions Wu Fengguang
2006-05-24 11:13 ` Wu Fengguang
2006-05-24 11:13 ` [PATCH 32/33] readahead: debug traces showing accessed file names Wu Fengguang
2006-05-24 11:13 ` Wu Fengguang
2006-05-24 11:13 ` [PATCH 33/33] readahead: debug traces showing read patterns Wu Fengguang
2006-05-24 11:13 ` Wu Fengguang
-- strict thread matches above, loose matches on Subject: below --
2006-05-26 9:53 [PATCH 00/33] Adaptive read-ahead V12 Just Marc
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