Re: Swap Compression

Jörn Engel (joern@wohnheim.fh-wedel.de)
Thu, 8 May 2003 10:07:12 +0200


On Wed, 7 May 2003 20:17:32 -0700, Perez-Gonzalez, Inaky wrote:
>
> This reminds me of some howto I saw somewhere of someway to
> use the MTD drivers to access the unused video RAM and turn
> it into swap (maybe with blkmtd?) ... probably it can be done
> with that too.

Jupp, if you know the physical address range of the RAM, it's a piece
of cake. Except that the slram option parsing is not user-friendly,
with me being an examplary user.

For memory above 4GB, things are harder. Basically you'd have to write
a new mtd driver that copies some of the highmem code. Maybe a day or
two plus testing.

> I'd really love it ... I don't know if I can blame it on highmem
> or not, but since I enabled it, my system 'feels' slower.

Go ahead and try it. If it 'feels' faster, it should be possible to
benchmark your feeling into some numbers.

Jörn

-- 
Victory in war is not repetitious.
-- Sun Tzu
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