Re: [Problem] slow write to dvd-ram since 2.6.7-bk8
From: Droebbel
Date: Wed Feb 16 2005 - 16:58:56 EST
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. I also reverse-applied it to the current prepatched
Ubuntu-2.6.10. It helped a bit there. Some new errors since 2.6.8, as it
seems... getting depressing a bit, this whole thing.
If you are using 2.6.7-mm1, there is another patch with even greater
impact: abs-fix.patch. Take the same + abs-fix-fix.patch from mm2.
If you might have a look at the vmscan-dont-reclaim-too-many-pages.patch
from
http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.7/2.6.7-mm2/broken-out/, maybe you will find out something.
Comparing the abs-fix patches from mm1 and mm2 might also help.
This is all I can do for now.
Regards
David
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