From: Diego Calleja <diegocg@gmail.com>
To: Wu Fengguang <wfg@mail.ustc.edu.cn>
Cc: linux-kernel@vger.kernel.org, torvalds@osdl.org, akpm@osdl.org,
axboe@suse.de, nickpiggin@yahoo.com.au, pbadari@us.ibm.com,
arjan@infradead.org
Subject: Re: [RFC] kernel facilities for cache prefetching
Date: Tue, 2 May 2006 18:07:53 +0200 [thread overview]
Message-ID: <20060502180753.096f8777.diegocg@gmail.com> (raw)
In-Reply-To: <346580906.19175@ustc.edu.cn>
El Tue, 2 May 2006 22:42:03 +0800,
Wu Fengguang <wfg@mail.ustc.edu.cn> escribió:
> Nope. mincore() only provides info about files that are currently
> opened, by the process itself. The majority in the file cache are
> closed files.
Yes; what I meant was:
- start listening the process event connector as firsk task on startup
- get a list of what files are being used (every second or something)
by looking at /proc/$PID/* stuff
- mincore() all those files at the end of the bootup
> Yes, it can still be useful after booting :) One can get the cache
> footprint of any task started at any time by taking snapshots of the
> cache before and after the task, and do a set-subtract on them.
Although this certainly looks simpler for userspace (and complete, if
you want to get absolutely all the info about files that get opened and
closed faster than the profile interval of a prefetcher)
(another useful tool would be a dtrace-like thing)
next prev parent reply other threads:[~2006-05-02 16:08 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20060502075049.GA5000@mail.ustc.edu.cn>
2006-05-02 7:50 ` Wu Fengguang
2006-05-02 12:46 ` Diego Calleja
[not found] ` <20060502144203.GA10594@mail.ustc.edu.cn>
2006-05-02 14:42 ` Wu Fengguang
2006-05-02 16:07 ` Diego Calleja [this message]
[not found] ` <20060503064503.GA4781@mail.ustc.edu.cn>
2006-05-03 6:45 ` Wu Fengguang
2006-05-03 18:14 ` Diego Calleja
2006-05-03 23:39 ` Zan Lynx
2006-05-04 1:37 ` Diego Calleja
2006-05-02 15:55 ` Linus Torvalds
2006-05-02 16:35 ` Andi Kleen
[not found] ` <20060503071325.GC4781@mail.ustc.edu.cn>
2006-05-03 7:13 ` Wu Fengguang
2006-05-03 12:59 ` Nikita Danilov
[not found] ` <20060503041106.GC5915@mail.ustc.edu.cn>
2006-05-03 4:11 ` Wu Fengguang
2006-05-03 17:28 ` Badari Pulavarty
[not found] ` <346733486.30800@ustc.edu.cn>
2006-05-04 15:03 ` Linus Torvalds
2006-05-04 16:57 ` Badari Pulavarty
[not found] ` <20060505144451.GA6134@mail.ustc.edu.cn>
2006-05-05 14:44 ` Wu Fengguang
2006-05-03 22:20 ` Rik van Riel
[not found] ` <20060506011125.GA9099@mail.ustc.edu.cn>
2006-05-06 1:11 ` Wu Fengguang
2006-05-04 0:28 ` Linda Walsh
2006-05-04 1:31 ` Linus Torvalds
2006-05-04 7:08 ` Ph. Marek
2006-05-04 7:33 ` Arjan van de Ven
[not found] ` <20060504121454.GB6008@mail.ustc.edu.cn>
2006-05-04 12:14 ` Wu Fengguang
2006-05-04 12:34 ` Arjan van de Ven
2006-05-03 21:45 ` Linda Walsh
[not found] ` <20060504121212.GA6008@mail.ustc.edu.cn>
2006-05-04 12:12 ` Wu Fengguang
2006-05-04 18:57 ` Linda Walsh
[not found] ` <20060505152007.GB6134@mail.ustc.edu.cn>
2006-05-05 15:20 ` Wu Fengguang
2006-05-04 9:02 ` Helge Hafting
2006-05-02 7:58 ` Arjan van de Ven
[not found] ` <20060502080619.GA5406@mail.ustc.edu.cn>
2006-05-02 8:06 ` Wu Fengguang
2006-05-02 8:30 ` Arjan van de Ven
[not found] ` <20060502085325.GA9190@mail.ustc.edu.cn>
2006-05-02 8:53 ` Wu Fengguang
2006-05-06 6:49 ` Denis Vlasenko
2006-05-02 8:55 ` Arjan van de Ven
2006-05-02 11:39 ` Jan Engelhardt
[not found] ` <20060502114853.GA9983@mail.ustc.edu.cn>
2006-05-02 11:48 ` Wu Fengguang
2006-05-02 22:03 ` Dave Jones
2006-05-02 8:09 ` Jens Axboe
[not found] ` <20060502082009.GA9038@mail.ustc.edu.cn>
2006-05-02 8:20 ` Wu Fengguang
2006-05-03 22:05 ` Benjamin LaHaise
2006-05-02 19:10 ` Pavel Machek
2006-05-02 23:36 ` Nigel Cunningham
[not found] ` <20060503023505.GB5915@mail.ustc.edu.cn>
2006-05-03 2:35 ` Wu Fengguang
[not found] ` <20060503023223.GA5915@mail.ustc.edu.cn>
2006-05-03 2:32 ` Wu Fengguang
[not found] ` <20060503071948.GD4781@mail.ustc.edu.cn>
2006-05-03 7:19 ` Wu Fengguang
[not found] ` <20060504122830.GA6205@mail.ustc.edu.cn>
2006-05-04 12:28 ` Wu Fengguang
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