From: Felix von Leitner <felix-kernel@fefe.de>
To: linux-kernel@vger.kernel.org
Subject: Request: I/O request recording
Date: Sat, 24 Jan 2004 19:10:27 +0100 [thread overview]
Message-ID: <20040124181026.GA22100@codeblau.de> (raw)
I would like to have a user space program that I could run while I cold
start KDE. The program would then record which I/O pages were read in
which order. The output of that program could then be used to pre-cache
all those pages, but in an order that reduces disk head movement.
Demand Loading unfortunately produces lots of random page I/O scattered
all over the disk.
Having a way to know which pages are accessed in which order at a
typical cold start would be very benefitial, not only for the purpose
described above but it could also be used as input for a linker code
reordering optimization.
What do you think?
Felix
next reply other threads:[~2004-01-24 18:08 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-24 18:10 Felix von Leitner [this message]
2004-01-24 18:23 ` Request: I/O request recording Valdis.Kletnieks
2004-01-24 18:26 ` Arjan van de Ven
2004-01-24 19:25 ` Ville Herva
2004-01-24 22:43 ` Arjan van de Ven
2004-01-24 20:11 ` Diego Calleja
2004-01-24 21:09 ` Ville Herva
2004-01-24 23:35 ` Andrew Morton
2004-01-24 23:53 ` Davide Libenzi
2004-01-25 0:03 ` Andrew Morton
2004-01-25 0:09 ` Davide Libenzi
2004-01-25 0:04 ` Valdis.Kletnieks
2004-01-25 0:10 ` Davide Libenzi
2004-01-25 12:26 ` Felipe Alfaro Solana
2004-01-25 22:59 ` Bart Samwel
2004-01-25 23:09 ` Andrew Morton
2004-01-25 23:29 ` Bart Samwel
2004-01-25 23:38 ` Andrew Morton
2004-01-26 0:23 ` Diego Calleja García
2004-01-26 0:32 ` Andrew Morton
2004-01-26 11:50 ` Bart Samwel
2004-01-26 11:57 ` Andrew Morton
2004-01-27 19:13 ` Bart Samwel
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