On Thu, Mar 01, 2012 at 03:03:53PM +0100, Jacek Luczak wrote: > 2012/3/1 Hillf Danton <dhillf@xxxxxxxxx>: > > On Thu, Mar 1, 2012 at 9:35 PM, Jacek Luczak <difrost.kernel@xxxxxxxxx> wrote: > >> > >> While I was about to grab acp I've noticed seekwatcher with made my day :) > >> > >> seekwatcher run of tar cf to eliminate writes (all done on 3.2.7): > >> 1) btrfs: http://dozzie.jarowit.net/~dozzie/luczajac/tar_btrfs.png > >> 2) ext4: http://dozzie.jarowit.net/~dozzie/luczajac/tar_ext4.png > >> 3) both merged: http://dozzie.jarowit.net/~dozzie/luczajac/tar_btrfs_ext4.png Whoa, seekwatcher makes it pretty clear. > >> > >> I will send acp results soon. > >> > > Would you please take reiserfs into account? > > As of now not (lack of time) but I'm pretty close to consider XFS in > the game. Whenever I will have more time and there won't be a pressure > on giving host back to production I will redo same tests for reiserfs. > > Now I'm focused on the userspace sorting results. reiserfs should have results very similar to ext4. The directory hashing used by reiserfs is going to result in a very random read pattern. XFS will probably beat btrfs in this test. Their directory indexes reflect on disk layout very well. -chris -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
