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From: William Lee Irwin III <wli@holomorphy.com>
To: Andrew Morton <akpm@zip.com.au>
Cc: Scott Kaplan <sfkaplan@cs.amherst.edu>, linux-mm@kvack.org
Subject: Re: About the free page pool
Date: Mon, 2 Sep 2002 22:43:30 -0700	[thread overview]
Message-ID: <20020903054330.GH18114@holomorphy.com> (raw)
In-Reply-To: <3D744BE8.4EB2DFB7@zip.com.au>

William Lee Irwin III wrote:
>> Are you referring to boot-time allocations using get_free_pages()
>> instead of bootmem? Killing those off would be nice, yes. It limits
>> the size of some hash tables on larger machines where "proportional
>> to memory" means "bigger than MAX_ORDER". (Changing the algorithms to
>> not use gargantuan hash tables might also be an interesting exercise
>> but one I've not got the bandwidth to take on.)

On Mon, Sep 02, 2002 at 10:43:04PM -0700, Andrew Morton wrote:
> Nope.  I'm referring to 1.5 megabytes lost to anonymous kmallocs,
> two or three megabytes of biovec mempools, etc.  And that's with
> NR_CPUS=4, and that's excluding all the statically allocated
> array[NR_CPUS]s.

Slightly different then. I don't know of anyone regularly testing 2.5.x
on 4MB machines, which might need a bit of help on this front if more
memory than they have is flushed down the toilet at boot.

I've got a collection of ancient toasters but the ports aren't booting,
and for reasons far deeper than this. 4MB bochs/x86 laptop? No time. =(

Cheers,
Bill
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  reply	other threads:[~2002-09-03  5:43 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-09-02 19:50 Scott Kaplan
2002-09-02 20:33 ` Andrew Morton
2002-09-02 20:50   ` Rik van Riel
2002-09-02 21:21     ` Andrew Morton
2002-09-02 21:15       ` Rik van Riel
2002-09-02 21:58   ` Scott Kaplan
2002-09-03  1:11     ` Andrew Morton
2002-09-03  1:35       ` Rik van Riel
2002-09-03  5:12       ` William Lee Irwin III
2002-09-03  5:43         ` Andrew Morton
2002-09-03  5:43           ` William Lee Irwin III [this message]
2002-09-03 16:46     ` Daniel Phillips

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