From: Mike Galbraith <efault@gmx.de>
To: Con Kolivas <kernel@kolivas.org>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>,
ck@vds.kolivas.org, Andrew Morton <akpm@osdl.org>,
linux list <linux-kernel@vger.kernel.org>
Subject: Re: lowmem_reserve question
Date: Mon, 03 Apr 2006 07:31:12 +0200 [thread overview]
Message-ID: <1144042272.8198.16.camel@homer> (raw)
In-Reply-To: <200604031518.49184.kernel@kolivas.org>
On Mon, 2006-04-03 at 15:18 +1000, Con Kolivas wrote:
> On Monday 03 April 2006 15:14, Mike Galbraith wrote:
> > If that dinky 16MB zone still exists, and always appears nearly full, be
> > happy. It used to be a real PITA.
>
> That's not the point. If you try to do any allocation anywhere else it also
> checks that zone, and it will find it full (always) leading to reclaim all
> over the place for no good reason. This has nothing to do with actually
> wanting to use that space or otherwise.
That doesn't make any sense. Why would you scan/reclaim if the zone is
not depleted?
Like I said, I'm _way_ out of date. The problem scenario used to be
that you run low on memory, dip into dinky dma zone, pin it, then grind
to powder trying to find a reclaimable dma page.
-Mike
next prev parent reply other threads:[~2006-04-03 5:30 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-02 4:01 2.6.16-ck3 Con Kolivas
2006-04-02 4:46 ` 2.6.16-ck3 Nick Piggin
2006-04-02 8:51 ` 2.6.16-ck3 Con Kolivas
2006-04-02 9:37 ` 2.6.16-ck3 Nick Piggin
2006-04-02 9:39 ` [ck] 2.6.16-ck3 Con Kolivas
2006-04-02 9:51 ` Nick Piggin
2006-04-03 2:48 ` lowmem_reserve question Con Kolivas
2006-04-03 4:42 ` Mike Galbraith
2006-04-03 4:48 ` Con Kolivas
2006-04-03 4:50 ` [ck] " Con Kolivas
2006-04-03 5:14 ` Mike Galbraith
2006-04-03 5:18 ` Con Kolivas
2006-04-03 5:31 ` Mike Galbraith [this message]
2006-04-04 2:35 ` [ck] " Con Kolivas
2006-04-06 1:10 ` [PATCH] mm: limit lowmem_reserve Con Kolivas
2006-04-06 1:10 ` Con Kolivas
2006-04-06 1:29 ` Respin: " Con Kolivas
2006-04-06 1:29 ` Con Kolivas
2006-04-06 2:43 ` Andrew Morton
2006-04-06 2:43 ` Andrew Morton
2006-04-06 2:55 ` Con Kolivas
2006-04-06 2:55 ` Con Kolivas
2006-04-06 2:58 ` Con Kolivas
2006-04-06 2:58 ` Con Kolivas
2006-04-06 3:40 ` Andrew Morton
2006-04-06 3:40 ` Andrew Morton
2006-04-06 4:36 ` Con Kolivas
2006-04-06 4:36 ` Con Kolivas
2006-04-06 4:52 ` Con Kolivas
2006-04-06 4:52 ` Con Kolivas
2006-04-07 6:25 ` Nick Piggin
2006-04-07 6:25 ` Nick Piggin
2006-04-07 9:02 ` Con Kolivas
2006-04-07 9:02 ` Con Kolivas
2006-04-07 12:40 ` Nick Piggin
2006-04-07 12:40 ` Nick Piggin
2006-04-08 0:15 ` Con Kolivas
2006-04-08 0:15 ` Con Kolivas
2006-04-08 0:55 ` Nick Piggin
2006-04-08 0:55 ` Nick Piggin
2006-04-08 1:01 ` Con Kolivas
2006-04-08 1:01 ` Con Kolivas
2006-04-08 1:25 ` Nick Piggin
2006-04-08 1:25 ` Nick Piggin
2006-05-17 14:11 ` Con Kolivas
2006-05-17 14:11 ` Con Kolivas
2006-05-18 7:11 ` Nick Piggin
2006-05-18 7:11 ` Nick Piggin
2006-05-18 7:21 ` Con Kolivas
2006-05-18 7:21 ` Con Kolivas
2006-05-18 7:26 ` Nick Piggin
2006-05-18 7:26 ` Nick Piggin
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