On Tue, 2007-11-13 at 10:19 +0800, Zhang, Yanmin wrote: > On Mon, 2007-11-12 at 17:48 +0100, Peter Zijlstra wrote: > > On Mon, 2007-11-12 at 17:05 +0200, Benny Halevy wrote: > > > On Nov. 12, 2007, 15:26 +0200, Peter Zijlstra <[EMAIL PROTECTED]> wrote: > > > > Single socket, dual core opteron, 2GB memory > > > > Single SATA disk, ext3 > > > > > > > > 2.6.23.1-42.fc8 #1 SMP > > > > > > > > 524288 4 225977 447461 > > > > 524288 4 232595 496848 > > > > 524288 4 220608 478076 > > > > 524288 4 203080 445230 > > > > > > > > 2.6.24-rc2 #28 SMP PREEMPT > > > > > > > > 524288 4 54043 83585 > > > > 524288 4 69949 516253 > > > > 524288 4 72343 491416 > > > > 524288 4 71775 492653 > > > > 2.6.24-rc2 + > > patches/wu-reiser.patch > > patches/writeback-early.patch > > patches/bdi-task-dirty.patch > > patches/bdi-sysfs.patch > > patches/sched-hrtick.patch > > patches/sched-rt-entity.patch > > patches/sched-watchdog.patch > > patches/linus-ext3-blockalloc.patch > > > > 524288 4 179657 487676 > > 524288 4 173989 465682 > > 524288 4 175842 489800 > > > > > > Linus' patch is the one that makes the difference here. So I'm unsure > > how you bisected it down to: > > > > 04fbfdc14e5f48463820d6b9807daa5e9c92c51f > Originally, my test suite is just to pick up the result of first run. Your > prior > patch(speed up writeback ramp-up on clean systems) fixed an issue about first > run result regression. So my bisect captured it. > > However, late on, I found following run have different results. A moment ago, > I retested 04fbfdc14e5f48463820d6b9807daa5e9c92c51f by: > #git checkout 04fbfdc14e5f48463820d6b9807daa5e9c92c51f > #make > > Then, reverse your patch. It looks like > 04fbfdc14e5f48463820d6b9807daa5e9c92c51f > is not the root cause of following run regression. I will change my test > suite to > make it run for many times and do a new bisect. > > > These results seem to point to > > > > 7c9e69faa28027913ee059c285a5ea8382e24b5d My new bisect captured 7c9e69faa28027913ee059c285a5ea8382e24b5d which caused the regression of iozone following run (3rd/4th... run after mounting the ext3 partition).
Peter, Where could I download Linus new patches, especially patches/linus-ext3-blockalloc.patch? I couldn't find it in my archives of LKML mails. yanmin - 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/