* Rafael J. Wysocki (rjw@xxxxxxx) wrote: > On Tuesday 07 April 2009, Wu Fengguang wrote: > > On Tue, Apr 07, 2009 at 06:15:09AM +0800, Wu Fengguang wrote: > > > On Tue, Apr 07, 2009 at 03:05:38AM +0800, Rafael J. Wysocki wrote: > > > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=12809 > > > > Subject : iozone regression with 2.6.29-rc6 > > > > Submitter : Lin Ming <ming.m.lin@xxxxxxxxx> > > > > Date : 2009-02-27 9:13 (39 days old) > > > > First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1cf6e7d83bf334cc5916137862c920a97aabc018 > > > > References : http://marc.info/?l=linux-kernel&m=123572630504360&w=4 > > > > http://lkml.org/lkml/2009/3/14/265 > > > > Handled-By : Wu Fengguang <fengguang.wu@xxxxxxxxx> > > > > > > This bug could be closed. > > > > > > The performance regression is triggered by commit 1cf6e7d83bf3(mm: > > > task dirty accounting fix). Which has been reverted in 2.6.29. > > > > Sorry for the mistake, commit 1cf6e7d83bf3 was _not_ reverted. > > So 2.6.29 is expected to have this regression.. > > Added -stable to the CC list. I'm not sure if that was included into .29.1. 1cf6e7d83bf3 is part of 2.6.29.1 (came in 2.6.29-rc6) > > > For 2.6.30, commit 1cf6e7d83bf33(mm: task dirty accounting fix) and > > > 1b5e62b42b55(writeback: double the dirty thresholds) were just merged > > > together. The latter one restores the iozone performance. (However > > > might deteriorate some writeback slowness bugs..) 1b5e62b42b55 is not in -stable. thanks, -chris -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
