From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Andrew Morton <akpm@osdl.org>
Cc: peter@mysql.com, linuxram@us.ibm.com, alexeyk@mysql.com,
linux-kernel@vger.kernel.org, axboe@suse.de
Subject: Re: Random file I/O regressions in 2.6
Date: Tue, 04 May 2004 21:39:52 +1000 [thread overview]
Message-ID: <40978108.3020600@yahoo.com.au> (raw)
In-Reply-To: <20040503181533.59af9762.akpm@osdl.org>
Andrew Morton wrote:
>
>
> Sorry, I do not understand that paragraph at all.
>
> All forms or pagecache population need to examine the pagecache to find out
> if the page is already there. This involves pagecache lookups. We want
> the read code to "learn" that the requested pages are all coming from cache
> and to stop doing those lookups altogether.
Yeah I think I have an idea of what the basic problems are,
but I'd have to understand things better before I know if I
am really on the right track.
My idea would probably also involve redoing some of the code
code too, so at the moment I don't think I have time. If your
simple fix works though, then that sounds good.
next prev parent reply other threads:[~2004-05-04 11:40 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-02 19:57 Random file I/O regressions in 2.6 Alexey Kopytov
2004-05-03 11:14 ` Nick Piggin
2004-05-03 18:08 ` Andrew Morton
2004-05-03 20:22 ` Ram Pai
2004-05-03 20:57 ` Andrew Morton
2004-05-03 21:37 ` Peter Zaitsev
2004-05-03 21:50 ` Ram Pai
2004-05-03 22:01 ` Peter Zaitsev
2004-05-03 21:59 ` Andrew Morton
2004-05-03 22:07 ` Ram Pai
2004-05-03 23:58 ` Nick Piggin
2004-05-04 0:10 ` Andrew Morton
2004-05-04 0:19 ` Nick Piggin
2004-05-04 0:50 ` Ram Pai
2004-05-04 6:29 ` Andrew Morton
2004-05-04 15:03 ` Ram Pai
2004-05-04 19:39 ` Ram Pai
2004-05-04 19:48 ` Andrew Morton
2004-05-04 19:58 ` Ram Pai
2004-05-04 21:51 ` Ram Pai
2004-05-04 22:29 ` Ram Pai
2004-05-04 23:01 ` Alexey Kopytov
2004-05-04 23:20 ` Andrew Morton
2004-05-05 22:04 ` Alexey Kopytov
2004-05-06 8:43 ` Andrew Morton
2004-05-06 18:13 ` Peter Zaitsev
2004-05-06 21:49 ` Andrew Morton
2004-05-06 23:49 ` Nick Piggin
2004-05-07 1:29 ` Peter Zaitsev
2004-05-10 19:50 ` Ram Pai
2004-05-10 20:21 ` Andrew Morton
2004-05-10 22:39 ` Ram Pai
2004-05-10 23:07 ` Andrew Morton
2004-05-11 20:51 ` Ram Pai
2004-05-11 21:17 ` Andrew Morton
2004-05-13 20:41 ` Ram Pai
2004-05-17 17:30 ` Random file I/O regressions in 2.6 [patch+results] Ram Pai
2004-05-20 1:06 ` Alexey Kopytov
2004-05-20 1:31 ` Ram Pai
2004-05-21 19:32 ` Alexey Kopytov
2004-05-20 5:49 ` Andrew Morton
2004-05-20 21:59 ` Andrew Morton
2004-05-20 22:23 ` Andrew Morton
2004-05-21 7:31 ` Nick Piggin
2004-05-21 7:50 ` Jens Axboe
2004-05-21 8:40 ` Nick Piggin
2004-05-21 8:56 ` Spam: " Andrew Morton
2004-05-21 22:24 ` Alexey Kopytov
2004-05-21 21:13 ` Alexey Kopytov
2004-05-26 4:43 ` Alexey Kopytov
2004-05-11 22:26 ` Random file I/O regressions in 2.6 Bill Davidsen
2004-05-04 1:15 ` Andrew Morton
2004-05-04 11:39 ` Nick Piggin [this message]
2004-05-04 8:27 ` Arjan van de Ven
2004-05-04 8:47 ` Andrew Morton
2004-05-04 8:50 ` Arjan van de Ven
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