From: Martin Peschke <mp3@de.ibm.com>
To: Wu Fengguang <wfg@mail.ustc.edu.cn>,
Andrew Morton <akpm@osdl.org>,
linux-kernel@vger.kernel.org, joern@wohnheim.fh-wedel.de,
ioe-lkml@rameria.de, Martin Peschke <mp3@de.ibm.com>
Subject: Re: [PATCH 09/33] readahead: events accounting
Date: Mon, 29 May 2006 10:19:36 +0200 [thread overview]
Message-ID: <447AAE98.2080409@de.ibm.com> (raw)
In-Reply-To: <348735988.17875@ustc.edu.cn>
Wu Fengguang wrote:
> On Thu, May 25, 2006 at 09:36:27AM -0700, Andrew Morton wrote:
>> Wu Fengguang <wfg@mail.ustc.edu.cn> wrote:
>>> A debugfs file named `readahead/events' is created according to advises from
>>> J?rn Engel, Andrew Morton and Ingo Oeser.
>> If everyone's patches all get merged up we'd expect that this facility be
>> migrated over to use Martin Peschke's statistics infrastructure.
>>
>> That's not a thing you should do now, but it would be a useful test of
>> Martin's work if you could find time to look at it and let us know whether
>> the infrastructure which he has provided would suit this application,
>> thanks.
>
> Hi, Martin is doing a great job, thanks.
>
> I have read about its doc. It should be suitable for various
> readahead numbers. And it seems a trivial work to port to it :)
Wu, great :) If you got questions (e.g. on how to setup your statistics so
that the output looks quite compact) or more requirements (like an enhancement
of the code that accumulates numbers) feel free to get back to me.
Thanks, Martin
next prev parent reply other threads:[~2006-05-29 8:19 UTC|newest]
Thread overview: 107+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20060524111246.420010595@localhost.localdomain>
2006-05-24 11:12 ` [PATCH 00/33] Adaptive read-ahead V12 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
[not found] ` <20060526011939.GA6220@mail.ustc.edu.cn>
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
[not found] ` <20060529030445.GB5994@mail.ustc.edu.cn>
2006-05-29 3:04 ` Wu Fengguang
[not found] ` <20060524111857.983845462@localhost.localdomain>
2006-05-24 11:12 ` [PATCH 02/33] radixtree: look-aside cache Wu Fengguang
[not found] ` <20060524111858.357709745@localhost.localdomain>
2006-05-24 11:12 ` [PATCH 03/33] radixtree: hole scanning functions Wu Fengguang
2006-05-25 16:19 ` Andrew Morton
[not found] ` <20060526070416.GB5135@mail.ustc.edu.cn>
2006-05-26 7:04 ` Wu Fengguang
[not found] ` <20060526110559.GA14398@mail.ustc.edu.cn>
2006-05-26 11:05 ` Wu Fengguang
2006-05-26 16:19 ` Andrew Morton
[not found] ` <20060524111858.869793445@localhost.localdomain>
2006-05-24 11:12 ` [PATCH 04/33] readahead: page flag PG_readahead Wu Fengguang
2006-05-25 16:23 ` Andrew Morton
[not found] ` <20060526070646.GC5135@mail.ustc.edu.cn>
2006-05-26 7:06 ` Wu Fengguang
2006-05-24 12:27 ` Peter Zijlstra
[not found] ` <20060524123740.GA16304@mail.ustc.edu.cn>
2006-05-24 12:37 ` Wu Fengguang
2006-05-24 12:48 ` Peter Zijlstra
[not found] ` <20060524111859.540640819@localhost.localdomain>
2006-05-24 11:12 ` [PATCH 05/33] readahead: refactor do_generic_mapping_read() Wu Fengguang
[not found] ` <20060524111859.909928820@localhost.localdomain>
2006-05-24 11:12 ` [PATCH 06/33] readahead: refactor __do_page_cache_readahead() Wu Fengguang
2006-05-25 16:30 ` Andrew Morton
2006-05-25 22:33 ` Paul Mackerras
2006-05-25 22:40 ` Andrew Morton
[not found] ` <20060526071339.GE5135@mail.ustc.edu.cn>
2006-05-26 7:13 ` Wu Fengguang
[not found] ` <20060524111900.419314658@localhost.localdomain>
2006-05-24 11:12 ` [PATCH 07/33] readahead: insert cond_resched() calls Wu Fengguang
[not found] ` <20060524111900.970898174@localhost.localdomain>
2006-05-24 11:12 ` [PATCH 08/33] readahead: common macros Wu Fengguang
2006-05-25 5:56 ` Nick Piggin
[not found] ` <20060525104117.GE4996@mail.ustc.edu.cn>
2006-05-25 10:41 ` Wu Fengguang
2006-05-26 3:33 ` Nick Piggin
[not found] ` <20060526065906.GA5135@mail.ustc.edu.cn>
2006-05-26 6:59 ` Wu Fengguang
[not found] ` <20060525134224.GJ4996@mail.ustc.edu.cn>
2006-05-25 13:42 ` Wu Fengguang
2006-05-25 14:38 ` Andrew Morton
2006-05-25 16:33 ` Andrew Morton
[not found] ` <20060524111901.581603095@localhost.localdomain>
2006-05-24 11:12 ` [PATCH 09/33] readahead: events accounting Wu Fengguang
2006-05-25 16:36 ` Andrew Morton
[not found] ` <20060526070943.GD5135@mail.ustc.edu.cn>
2006-05-26 7:09 ` Wu Fengguang
[not found] ` <20060527132002.GA4814@mail.ustc.edu.cn>
2006-05-27 13:20 ` Wu Fengguang
2006-05-29 8:19 ` Martin Peschke [this message]
[not found] ` <20060524111901.976888971@localhost.localdomain>
2006-05-24 11:12 ` [PATCH 10/33] readahead: support functions Wu Fengguang
2006-05-25 5:13 ` Nick Piggin
[not found] ` <20060525111318.GH4996@mail.ustc.edu.cn>
2006-05-25 11:13 ` Wu Fengguang
2006-05-25 16:48 ` Andrew Morton
[not found] ` <20060526073114.GH5135@mail.ustc.edu.cn>
2006-05-26 7:31 ` Wu Fengguang
[not found] ` <20060524111902.491708692@localhost.localdomain>
2006-05-24 11:12 ` [PATCH 11/33] readahead: sysctl parameters Wu Fengguang
2006-05-25 4:50 ` [PATCH 12/33] readahead: min/max sizes Nick Piggin
[not found] ` <20060525121206.GI4996@mail.ustc.edu.cn>
2006-05-25 12:12 ` Wu Fengguang
[not found] ` <20060524111903.510268987@localhost.localdomain>
2006-05-24 11:12 ` [PATCH 13/33] readahead: state based method - aging accounting Wu Fengguang
2006-05-26 17:04 ` Andrew Morton
[not found] ` <20060527062234.GB4991@mail.ustc.edu.cn>
2006-05-27 6:22 ` Wu Fengguang
2006-05-27 7:00 ` Andrew Morton
[not found] ` <20060527072201.GA5284@mail.ustc.edu.cn>
2006-05-27 7:22 ` Wu Fengguang
[not found] ` <20060524111904.019763011@localhost.localdomain>
2006-05-24 11:13 ` [PATCH 14/33] readahead: state based method - data structure Wu Fengguang
2006-05-25 6:03 ` Nick Piggin
[not found] ` <20060525104353.GF4996@mail.ustc.edu.cn>
2006-05-25 10:43 ` Wu Fengguang
2006-05-26 17:05 ` Andrew Morton
[not found] ` <20060527070248.GD4991@mail.ustc.edu.cn>
2006-05-27 7:02 ` Wu Fengguang
[not found] ` <20060527082758.GF4991@mail.ustc.edu.cn>
2006-05-27 8:27 ` Wu Fengguang
[not found] ` <20060524111904.683513683@localhost.localdomain>
2006-05-24 11:13 ` [PATCH 15/33] readahead: state based method - routines Wu Fengguang
2006-05-26 17:15 ` Andrew Morton
[not found] ` <20060527020616.GA7418@mail.ustc.edu.cn>
2006-05-27 2:06 ` Wu Fengguang
[not found] ` <20060524111905.586110688@localhost.localdomain>
2006-05-24 11:13 ` [PATCH 17/33] readahead: context based method Wu Fengguang
2006-05-25 5:26 ` Nick Piggin
[not found] ` <20060525080308.GB4996@mail.ustc.edu.cn>
2006-05-25 8:03 ` Wu Fengguang
2006-05-26 17:23 ` Andrew Morton
[not found] ` <20060527021252.GB7418@mail.ustc.edu.cn>
2006-05-27 2:12 ` Wu Fengguang
2006-05-26 17:27 ` Andrew Morton
[not found] ` <20060527080443.GE4991@mail.ustc.edu.cn>
2006-05-27 8:04 ` Wu Fengguang
2006-05-24 12:37 ` Peter Zijlstra
[not found] ` <20060524133353.GA16508@mail.ustc.edu.cn>
2006-05-24 13:33 ` Wu Fengguang
2006-05-24 15:53 ` Peter Zijlstra
[not found] ` <20060525012556.GA6111@mail.ustc.edu.cn>
2006-05-25 1:25 ` Wu Fengguang
[not found] ` <20060524111906.245276338@localhost.localdomain>
2006-05-24 11:13 ` [PATCH 18/33] readahead: initial method - guiding sizes Wu Fengguang
[not found] ` <20060524111906.588647885@localhost.localdomain>
2006-05-24 11:13 ` [PATCH 19/33] readahead: initial method - thrashing guard size Wu Fengguang
[not found] ` <20060524111907.134685550@localhost.localdomain>
2006-05-24 11:13 ` [PATCH 20/33] readahead: initial method - expected read size Wu Fengguang
2006-05-25 5:34 ` [PATCH 22/33] readahead: initial method Nick Piggin
[not found] ` <20060525085957.GC4996@mail.ustc.edu.cn>
2006-05-25 8:59 ` Wu Fengguang
2006-05-26 17:29 ` [PATCH 20/33] readahead: initial method - expected read size Andrew Morton
[not found] ` <20060527063826.GC4991@mail.ustc.edu.cn>
2006-05-27 6:38 ` Wu Fengguang
[not found] ` <20060524111908.569533741@localhost.localdomain>
2006-05-24 11:13 ` [PATCH 23/33] readahead: backward prefetching method Wu Fengguang
2006-05-26 17:37 ` Nate Diller
2006-05-26 19:22 ` Nathan Scott
[not found] ` <20060528123006.GC6478@mail.ustc.edu.cn>
2006-05-28 12:30 ` Wu Fengguang
[not found] ` <20060524111909.147416866@localhost.localdomain>
2006-05-24 11:13 ` [PATCH 24/33] readahead: seeking reads method Wu Fengguang
[not found] ` <20060524111909.635589701@localhost.localdomain>
2006-05-24 11:13 ` [PATCH 25/33] readahead: thrashing recovery method Wu Fengguang
[not found] ` <20060524111910.207894375@localhost.localdomain>
2006-05-24 11:13 ` [PATCH 26/33] readahead: call scheme Wu Fengguang
[not found] ` <20060524111910.544274094@localhost.localdomain>
2006-05-24 11:13 ` [PATCH 27/33] readahead: laptop mode Wu Fengguang
2006-05-26 17:38 ` Andrew Morton
[not found] ` <20060524111911.607080495@localhost.localdomain>
2006-05-24 11:13 ` [PATCH 29/33] readahead: nfsd case Wu Fengguang
[not found] ` <20060524111912.156646847@localhost.localdomain>
2006-05-24 11:13 ` [PATCH 30/33] readahead: turn on by default Wu Fengguang
[not found] ` <20060524111912.485160282@localhost.localdomain>
2006-05-24 11:13 ` [PATCH 31/33] readahead: debug radix tree new functions Wu Fengguang
[not found] ` <20060524111912.967392912@localhost.localdomain>
2006-05-24 11:13 ` [PATCH 32/33] readahead: debug traces showing accessed file names Wu Fengguang
[not found] ` <20060524111913.603476893@localhost.localdomain>
2006-05-24 11:13 ` [PATCH 33/33] readahead: debug traces showing read patterns Wu Fengguang
[not found] ` <20060524111911.032100160@localhost.localdomain>
2006-05-24 11:13 ` [PATCH 28/33] readahead: loop case Wu Fengguang
2006-05-24 14:01 ` Limin Wang
[not found] ` <20060525154846.GA6907@mail.ustc.edu.cn>
2006-05-25 15:48 ` wfg
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