From: Linus Torvalds <torvalds@transmeta.com>
To: Rik van Riel <H.H.vanRiel@fys.ruu.nl>
Cc: "Stephen C. Tweedie" <sct@dcs.ed.ac.uk>, linux-mm <linux-mm@kvack.org>
Subject: Re: new allocation algorithm
Date: Fri, 27 Mar 1998 09:30:40 -0800 (PST) [thread overview]
Message-ID: <Pine.LNX.3.95.980327092811.6613C-100000@penguin.transmeta.com> (raw)
In-Reply-To: <Pine.LNX.3.91.980327095733.3532A-100000@mirkwood.dummy.home>
On Fri, 27 Mar 1998, Rik van Riel wrote:
>
> I just came up with the idea of using an ext2 like algorithm
> for memory allocation, in which we:
> - group memory in 128 PAGE groups
> - have one unsigned char counter per group, counting the number
> of used pages
Let's wait with how well the current setup works. It seems to perform
reasonably well even on smaller machines (modulo your patch), and I think
we'd better more-or-less freeze it waiting for further info on what people
actually think.
The current scheme is fairly efficient and extremely stable, and gives
good behaviour for the cases we _really_ care about (pageorders 0, 1 and
to some degree 2). It comes reasonably close to working for the higher
orders too, but they really aren't as critical..
Linus
next prev parent reply other threads:[~1998-03-27 17:31 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-03-27 9:03 Rik van Riel
1998-03-27 17:30 ` Linus Torvalds [this message]
1998-03-27 18:33 ` Benjamin C.R. LaHaise
1998-03-30 15:07 ` Rik van Riel
1998-04-01 20:28 ` Stephen C. Tweedie
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