linux-kernel - Re: How can we make page replacement smarter

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Sun, 29 Jul 2007 11:01:19 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	Al Boldi <a1426z@...ab.com>, Chris Snook <csnook@...hat.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: How can we make page replacement smarter

Alan Cox wrote:
>> Files are different.  File content tends to be grouped
>> in large related chunks, both logically in the file and
>> on disk.  Generally there is a lot more file data on a
>> system than what fits in memory.
> 
> Binary paging patterns don't always look like that unfortunately although
> I suspect we might want to be weighing towards paging out R/O file mapped
> pages earlier simply because they are bigger linear chunks

A properly implemented use-once algorithm should be able
to filter out the spatial locality of reference pages from
the temporal locality of reference ones, though...

-- 
Politics is the struggle between those who want to make their country
the best in the world, and those who believe it already is.  Each group
calls the other unpatriotic.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/