Subject: Re: [Problem] slow write to dvd-ram since 2.6.7-bk8
From: Droebbel <droebbel.melta@gmx.de>
To: Tino Keitel <tino.keitel@gmx.de>
Cc: linux-kernel@vger.kernel.org
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Date: Wed, 16 Feb 2005 23:29:24 +0100
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On Mi, 2005-02-16 at 22:55 +0100, Droebbel wrote:
>Some new information:
>
>2.6.7 is ok, 2.6.7-mm2 is not ok, 2.6.7 with just the linus-patch from
>mm2 is ok, 2.6.7 with linus.patch from mm3 isn't.
>So I took some of the patches from the broken-out mm2 and tested them
>seperately.
>
>The vmscan-dont-reclaim-too-many-pages.patch led to the said reduction
>of writing speed. I reverse-applied it to 2.6.8.1, where it seems to
>solve the problem.

Sorry, have to correct that: it seemed to help at my tests with dd
(write 1G of zeroes to a file). Copying a file with mc still shows
around 1.4MB/s. Could be worse, but is definitely not ok. It *is* better
with 2.6.7.

Regards

David

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