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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
