From: Paulo Marques <pmarques@grupopie.com>
To: Alexey Fisher <bug-track@fisher-privat.net>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: smart cache. ist is possible?
Date: Mon, 16 Mar 2009 15:15:23 +0000 [thread overview]
Message-ID: <49BE6D0B.7020507@grupopie.com> (raw)
In-Reply-To: <49BD1EB7.6080109@fisher-privat.net>
Alexey Fisher wrote:
> Hallo all.
Hi,
> I found for my self how great is cache in linux. If read one file from
> disk, so i don't need to do it second time, chace will do the job. It
> speed up thing greatly. But i found it not working with realy big files.
> Like i have 4GB RAM, so if i read a file like 4.6GB, cache won't work.
> Is it possible to have some sort of smart cache wich will read for
> exaplme 1GB from disk and other part from cache?
This is something that depends on the page replacement algorithm. A
different page replacement algorithm might do better and there has been
some work in the past on this.
Check, for instance, this paper on Clock-Pro:
http://www.cse.ohio-state.edu/hpcs/WWW/HTML/publications/papers/TR-05-3.pdf
ISTR that Rik van Riel was doing an implementation of this algorithm for
the 2.6 kernel, but I don't remember how that ended up...
--
Paulo Marques - www.grupopie.com
"God is real, unless declared integer."
prev parent reply other threads:[~2009-03-16 15:15 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-15 15:28 smart cache. ist is possible? Alexey Fisher
2009-03-15 18:13 ` Sitsofe Wheeler
2009-03-15 22:06 ` Alexey Fisher
2009-03-15 23:26 ` Sitsofe Wheeler
2009-03-16 7:34 ` Alexey Fisher
2009-03-16 17:36 ` Sitsofe Wheeler
2009-03-15 22:23 ` Dave Chinner
2009-03-16 13:02 ` Pádraig Brady
2009-03-16 15:15 ` Paulo Marques [this message]
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