Lee Schermerhorn wrote: > On Wed, 2009-06-17 at 09:45 +0200, Stefan Lankes wrote: > >>> I've placed the last rebased version in : >>> >>> http://free.linux.hp.com/~lts/Patches/PageMigration/2.6.28-rc4-mmotm- >>> 081110/ >>> >>> >> OK! I will try to reconstruct the problem. >> > > Stefan: > > Today I rebased the migrate on fault patches to 2.6.30-mmotm-090612... > [along with my shared policy series atop which they sit in my tree]. > Patches reside in: > > http://free.linux.hp.com/~lts/Patches/PageMigration/2.6.30-mmotm-090612-1220/ > > I gave this patchset a try and indeed it seems to work fine, thanks a lot. But the migration performance isn't very good. I am seeing about 540MB/s when doing mbind+touch_all_pages on large buffers on a quad-barcelona machines. move_pages gets 640MB/s there. And my own next-touch implementation were near 800MB/s in the past. I wonder if there is a more general migration performance degradation in latest Linus git. move_pages performance was supposed to increase by 15% (more than 700MB/s) thanks to commit dfa33d45 but I don't seem to see the improvement with git or mmotm. Also migrate_pages seems to have decreased but it might be older than 2.6.30. I need to find some time to git bisect all this, otherwise it's hard to compare the performance of your migrate-on-fault with other older implementations :) When do you plan to actually submit all your patches for inclusion? thanks, Brice -- To unsubscribe from this list: send the line "unsubscribe linux-numa" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
