Messages in this thread | | | Date | Fri, 10 Jul 2009 14:37:30 +0800 | From | Wu Fengguang <> | Subject | Re: [Bug #13726] fio sync read 4k block size 35% regression |
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On Tue, Jul 07, 2009 at 02:06:42PM +0800, Zhang, Yanmin wrote: > On Tue, 2009-07-07 at 02:01 +0200, Rafael J. Wysocki wrote: > > This message has been generated automatically as a part of a report > > of recent regressions. > > > > The following bug entry is on the current list of known regressions > > from 2.6.30. Please verify if it still should be listed and let me know > > (either way). > > > > > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=13726 > > Subject : fio sync read 4k block size 35% regression > > Submitter : Zhang, Yanmin <yanmin_zhang@linux.intel.com> > > Date : 2009-07-01 11:25 (6 days old) > > First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=51daa88ebd8e0d437289f589af29d4b39379ea76 > > References : http://lkml.org/lkml/2009/6/30/679 > > Handled-By : Wu Fengguang <fengguang.wu@intel.com> > Fengguang, > > I'm still working on it now. The new testing against 2.6.31-rc2 is ongoing. > fio sync/mmap read has new behavior. I did collect some data. But suddenly > with new created data, the fio_sync_read_4k regression disappeared, while
Do you mean the fio_sync_read_4k regression disappeared because we are collecting data with lots of printks?
> fio_mmap_read is still there. Originally, the testing and bisect were stable. > Let me check what happens firstly.
Thanks! What's your fio_mmap_read job file and the readahead traces?
Thanks, Fengguang
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