From: Jamie Lokier <lk@tantalophile.demon.co.uk>
To: Zlatko Calusic <zlatko@iskon.hr>
Cc: alan@redhat.com, linux-mm@kvack.org, linux-kernel@vger.rutgers.edu
Subject: Re: shrink_mmap() change in ac-21
Date: Mon, 19 Jun 2000 23:46:27 +0200 [thread overview]
Message-ID: <20000619234627.B23135@pcep-jamie.cern.ch> (raw)
In-Reply-To: <87r99t8m2r.fsf@atlas.iskon.hr>; from zlatko@iskon.hr on Mon, Jun 19, 2000 at 10:14:52PM +0200
Zlatko Calusic wrote:
> The shrink_mmap() change in your latest prepatch (ac12) doesn't look
> very healthy. Removing the test for the wrong zone we effectively
> discard lots of wrong pages before we get to the right one. That is
> effectively flushing the page cache and we have unbalanced system.
You know, there may be some sense in removing pages from the wrong zone,
if those wrong zones are quite full. If the DMA zone desparately needs
free pages and keeps needing them, isn't it good to encourage future
non-DMA allocations to use another zone? Removing pages from other
zones is one way to achieve that.
-- Jamie
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next prev parent reply other threads:[~2000-06-19 21:46 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-06-19 20:14 Zlatko Calusic
2000-06-19 21:07 ` Rik van Riel
2000-06-19 21:46 ` Jamie Lokier [this message]
2000-06-19 22:10 ` Rik van Riel
2000-06-19 22:43 ` Andrea Arcangeli
2000-06-19 22:48 ` Andrea Arcangeli
2000-06-20 9:03 ` Zlatko Calusic
2000-06-20 16:18 ` Rik van Riel
2000-06-20 16:53 ` Juan J. Quintela
2000-06-20 17:30 ` Manfred Spraul, Juan J. Quintela
2000-06-20 17:41 ` Juan J. Quintela
2000-06-20 19:00 ` Andrea Arcangeli
2000-06-19 21:47 ` Manfred Spraul, Zlatko Calusic
2000-06-20 8:21 ` Zlatko Calusic
2000-06-20 16:14 ` Manfred Spraul, Zlatko Calusic
2000-06-20 17:01 ` willy
2000-06-20 17:03 ` Alan Cox
[not found] <200006202027.NAA01142@penguin.transmeta.com>
2000-06-20 22:59 ` Rik van Riel
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