From: Andrea Arcangeli <andrea@suse.de>
To: Mike Galbraith <mikeg@wen-online.de>
Cc: Arjan van de Ven <arjanv@redhat.com>, linux-kernel@vger.kernel.org
Subject: Re: 2.4.>=13 VM/kswapd/shmem/Oracle issue (was Re: Google's mm problems)
Date: Sun, 18 Nov 2001 07:27:44 +0100 [thread overview]
Message-ID: <20011118072743.B25232@athlon.random> (raw)
In-Reply-To: <20011117165441.S1381@athlon.random> <Pine.LNX.4.33.0111180711260.644-100000@mikeg.weiden.de>
In-Reply-To: <Pine.LNX.4.33.0111180711260.644-100000@mikeg.weiden.de>; from mikeg@wen-online.de on Sun, Nov 18, 2001 at 07:17:02AM +0100
On Sun, Nov 18, 2001 at 07:17:02AM +0100, Mike Galbraith wrote:
> On Sat, 17 Nov 2001, Andrea Arcangeli wrote:
>
> > If all your hardware is PCI nobody will make an allocation from the
> > ZONE_DMA classzone and so kswapd will never loop on the ZONE_DMA, as
> > instead can happen with -ac as soon as the ZONE_DMA becomes unfreeable
> > and under the low watermark (and "unfreeable" of course also means all
> > anon not locked memory but no swap installed in the machine).
>
> We don't fallback to ZONE_DMA anymore? (good)
we still fallback on the ZONE_DMA, otherwise mem=17m wouldn't boot :)
what we don't do is to try to balance the dma zone if nobody is asking
memory explicitly from the dma zone [isa users].
Andrea
next prev parent reply other threads:[~2001-11-18 6:28 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-30 23:07 Google's mm problems Daniel Phillips
2001-11-01 20:00 ` Google's mm problems with 2.4.13 and 4G of memory Sven Heinicke
2001-11-02 22:24 ` Daniel Phillips
2001-11-03 20:56 ` Google's mm problems Christian Ehrhardt
2001-11-04 3:29 ` Daniel Phillips
2001-11-05 16:10 ` Sven Heinicke
2001-11-09 9:38 ` 2.4.>=13 VM/kswapd/shmem/Oracle issue (was Re: Google's mm problems) Ken Brownfield
2001-11-09 22:39 ` vda
2001-11-15 17:40 ` Andrea Arcangeli
2001-11-15 17:48 ` Arjan van de Ven
2001-11-17 15:54 ` Andrea Arcangeli
2001-11-18 6:17 ` Mike Galbraith
2001-11-18 6:27 ` Andrea Arcangeli [this message]
2001-11-18 7:14 ` Mike Galbraith
2001-11-15 20:07 ` Ken Brownfield
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