From: Rik van Riel <H.H.vanRiel@phys.uu.nl>
To: Andrea Arcangeli <andrea@e-mind.com>
Cc: "Stephen C. Tweedie" <sct@redhat.com>,
Linux MM <linux-mm@kvack.org>,
Linux Kernel <linux-kernel@vger.rutgers.edu>,
Alan Cox <number6@the-village.bc.nu>
Subject: Re: [PATCH] VM improvements for 2.1.131
Date: Thu, 10 Dec 1998 02:10:34 +0100 (CET) [thread overview]
Message-ID: <Pine.LNX.4.03.9812100208190.30852-100000@mirkwood.dummy.home> (raw)
In-Reply-To: <Pine.LNX.3.96.981210001237.792A-100000@laser.bogus>
On Thu, 10 Dec 1998, Andrea Arcangeli wrote:
> On Wed, 9 Dec 1998, Rik van Riel wrote:
>
> >This is because 'swapped' data is added to the cache. It also
> >is because without it kswapd would not free memory in swap_out().
> >Then, because it didn't free memory, it would continue to swap
> >out more and more and still more with no effect (remember the
> >removal of page aging?).
>
> Nono, I reversed the vmscan changes on my tree. On my tree when
> swap_out returns 1 it has really freed a page ;).
swap_out() _never_ frees a page any more. It pushes the
pages out to swap and dereferences them so we can free
them with shrink_mmap(). This provides free page aging
and several more benefits.
You can play with the algorithms as much as you want,
however -- I'll be interested to hear about the results...
cheers,
Rik -- the flu hits, the flu hits, the flu hits -- MORE
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next prev parent reply other threads:[~1998-12-10 1:21 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-12-06 0:34 Rik van Riel
1998-12-06 2:10 ` Eric W. Biederman
1998-12-06 1:59 ` Rik van Riel
1998-12-07 17:08 ` Stephen C. Tweedie
1998-12-07 10:47 ` Neil Conway
1998-12-07 13:04 ` Rik van Riel
1998-12-07 18:01 ` Stephen C. Tweedie
1998-12-07 22:04 ` Stephen C. Tweedie
1998-12-07 22:51 ` Rik van Riel
1998-12-09 17:43 ` Andrea Arcangeli
1998-12-09 21:05 ` Rik van Riel
1998-12-09 23:15 ` Andrea Arcangeli
1998-12-10 1:10 ` Rik van Riel [this message]
1998-12-10 13:52 ` Stephen C. Tweedie
1998-12-10 13:50 ` Stephen C. Tweedie
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