From: Wu Fengguang <fengguang.wu@intel.com>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Kernel Testers List <kernel-testers@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
"Lin, Ming M" <ming.m.lin@intel.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Nick Piggin <npiggin@suse.de>,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [Bug #12809] iozone regression with 2.6.29-rc6
Date: Tue, 7 Apr 2009 06:20:37 +0800 [thread overview]
Message-ID: <20090406222037.GA18714@localhost> (raw)
In-Reply-To: <20090406221509.GA17604@localhost>
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:
> > 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 2.6.28. Please verify if it still should be listed and let me know
> > (either way).
> >
> >
> > 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@intel.com>
> > 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@intel.com>
> >
>
> 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..
Thanks,
Fengguang
> 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..)
>
> Thanks,
> Fengguang
>
next prev parent reply other threads:[~2009-04-06 22:21 UTC|newest]
Thread overview: 105+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-06 18:54 2.6.29-git13: Reported regressions from 2.6.28 Rafael J. Wysocki
2009-04-06 19:03 ` [Bug #12499] Problem with using bluetooth adaper connected to usb port Rafael J. Wysocki
2009-04-07 7:14 ` Marcel Holtmann
2009-04-07 7:49 ` Maciej Rutecki
2009-04-08 9:27 ` Maciej Rutecki
2009-04-07 21:13 ` Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #12668] USB flash disk surprise disconnect Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #12574] possible circular locking dependency detected Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #12667] Badness at kernel/time/timekeeping.c:98 in pmud (timekeeping_suspended) Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #12681] s2ram: fails to wake up on Acer Extensa 4220 (SMP disabled) Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #12671] uvc_status_cleanup(): undefined reference to `input_unregister_device' Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #12670] BUG: unable to handle kernel paging request at pin_to_kill+0x21 Rafael J. Wysocki
2009-04-07 8:11 ` Alessandro Bono
2009-04-07 21:14 ` Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #12705] X200: Brightness broken since 2.6.29-rc4-58-g4c098bc Rafael J. Wysocki
2009-04-07 4:12 ` Len Brown
2009-04-07 21:16 ` Rafael J. Wysocki
[not found] ` <20090417143532.GA6195@ikn.schottelius.org>
2009-04-20 10:36 ` Nico Schottelius
2009-04-06 19:05 ` [Bug #12765] i915 VT switch with AIGLX causes X lock up Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #12771] Oops in i915_gem_flush Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #12778] suspend regression from 29rc5 to 29rc6 Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #12867] 2.6.29-rc7 broke r8169 MAC on Thecus n2100 ARM board Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #12836] 2.6.29-rc breaks STD using Intel 945 Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #12809] iozone regression with 2.6.29-rc6 Rafael J. Wysocki
2009-04-06 22:05 ` Linus Torvalds
2009-04-06 22:15 ` Wu Fengguang
2009-04-06 22:20 ` Wu Fengguang [this message]
2009-04-06 22:30 ` Rafael J. Wysocki
2009-04-06 23:34 ` [stable] " Chris Wright
2009-04-06 19:05 ` [Bug #12861] Xorg fails to start "Failed to allocate space for kernel memory manager" Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #12871] usb bluetooth crashes system Rafael J. Wysocki
2009-04-07 7:16 ` Marcel Holtmann
2009-04-07 21:09 ` Pavel Machek
2009-04-07 7:27 ` Pavel Machek
2009-04-06 19:05 ` [Bug #12872] pwc mmap always fails with EAGAIN Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #12899] Crash in i915.ko: i915_driver_irq_handler Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #12908] acpi_ex_extract_from_field -- div by zero Rafael J. Wysocki
2009-04-07 4:09 ` Len Brown
2009-04-07 11:03 ` Jiri Slaby
2009-04-06 19:05 ` [Bug #12971] "tg3 transmit timed out" when transmitting at high bitrate Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #12947] r128: system hangs when X is started with DRI enabled Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #12909] boot/kernel init duration regression from 2.6.28 Rafael J. Wysocki
2009-04-06 22:47 ` CaT
2011-06-25 23:59 ` boot/kernel init duration regression in 2.6.39 (was: Re: [Bug #12909] boot/kernel init duration regression from 2.6.28) CaT
2009-04-06 19:05 ` [Bug #12961] Kernel panics in early boot: IO-APIC + timer doesn't work Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #12975] ata2: lots of error messages, but OS still running well Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #13001] PCI-DMA: Out of IOMMU space Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #12980] lockup in X.org Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #13016] consistent oops from request_key in 2.6.29 Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #13017] ATA bus errors on resume Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #13015] pppoe over ethernet Rafael J. Wysocki
2009-04-07 3:31 ` Cyrill Gorcunov
2009-04-07 8:33 ` Detlef Tschirschky
2009-04-07 8:41 ` Cyrill Gorcunov
2009-04-07 21:23 ` Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #13019] /proc/<pid>/maps offset output broken in 2.6.29 Rafael J. Wysocki
2009-04-06 23:13 ` Hugh Dickins
2009-04-07 21:22 ` Rafael J. Wysocki
2009-04-06 19:05 ` [Bug #13026] cs5536 is broken Rafael J. Wysocki
2009-04-06 21:53 ` 2.6.29-git13: Reported regressions from 2.6.28 Linus Torvalds
2009-04-06 22:34 ` Rafael J. Wysocki
2009-04-16 21:08 ` Chris Friesen
2009-04-16 21:35 ` Linus Torvalds
2009-04-20 21:22 ` Chris Friesen
2009-04-20 23:08 ` Hugh Dickins
2009-04-22 19:32 ` Chris Friesen
2009-04-07 3:56 ` Trenton D. Adams
2009-04-07 4:07 ` Linus Torvalds
2009-04-07 4:23 ` Trenton D. Adams
2009-04-07 6:24 ` Jarek Poplawski
2009-04-07 6:31 ` Trenton D. Adams
2009-04-07 6:41 ` Jarek Poplawski
2009-04-07 6:53 ` Trenton D. Adams
2009-04-07 16:16 ` Stefan Richter
2009-04-07 16:44 ` Trenton D. Adams
2009-04-07 17:10 ` 2.6.29 on MacBook 2,1 fails to reboot (was Re: 2.6.29-git13: Reported regressions from 2.6.28) Stefan Richter
2009-04-07 17:20 ` Justin Mattock
2009-04-07 18:22 ` Trenton D. Adams
2009-04-07 19:23 ` Stefan Richter
2009-04-07 20:52 ` Trenton D. Adams
2009-04-08 1:16 ` Trenton D. Adams
2009-04-08 8:00 ` Rafael J. Wysocki
[not found] ` <AsKNxFx2juN.A.cV.bGn2JB@chimera>
2009-04-06 23:03 ` [Bug #12870] 2.6.29-rc "TKIP: replay detected" regression Hugh Dickins
2009-04-07 21:28 ` Rafael J. Wysocki
[not found] ` <AsKNxFx2juN.A.0OH.0Fn2JB@chimera>
2009-04-07 2:13 ` [Bug #13018] 2.6.29 on MacBook 2,1 fails to reboot Trenton D. Adams
2009-04-07 2:14 ` Trenton D. Adams
2009-04-07 21:30 ` Rafael J. Wysocki
2009-04-07 22:00 ` Trenton D. Adams
[not found] ` <AsKNxFx2juN.A.GaD.UJn2JB@chimera>
2009-04-07 2:40 ` [Bug #12490] ath5k related kernel panic in 2.6.29-rc1 Bob Copeland
2009-04-07 10:03 ` Johannes Berg
2009-04-08 0:46 ` Bob Copeland
2009-04-08 0:54 ` Johannes Berg
2009-04-07 10:02 ` 2.6.29-git13: Reported regressions from 2.6.28 Ilpo Järvinen
2009-04-07 22:24 ` Rafael J. Wysocki
2009-04-17 16:23 ` Rolf Eike Beer
-- strict thread matches above, loose matches on Subject: below --
2009-03-21 16:28 2.6.29-rc8-git5: " Rafael J. Wysocki
2009-03-21 16:39 ` [Bug #12809] iozone regression with 2.6.29-rc6 Rafael J. Wysocki
2009-03-14 19:01 2.6.29-rc8: Reported regressions from 2.6.28 Rafael J. Wysocki
2009-03-14 19:05 ` [Bug #12809] iozone regression with 2.6.29-rc6 Rafael J. Wysocki
2009-03-15 0:27 ` Linus Torvalds
2009-03-15 7:55 ` Wu Fengguang
2009-03-16 5:03 ` Lin Ming
2009-03-16 7:30 ` Wu Fengguang
2009-03-03 19:22 2.6.29-rc6-git7: Reported regressions from 2.6.28 Rafael J. Wysocki
2009-03-03 19:25 ` [Bug #12809] iozone regression with 2.6.29-rc6 Rafael J. Wysocki
2009-03-05 1:09 ` Wu Fengguang
[not found] ` <1236218012.2567.115.camel@ymzhang>
[not found] ` <20090305020408.GA26425@localhost>
[not found] ` <1236219189.2567.123.camel@ymzhang>
2009-03-05 7:37 ` Peter Zijlstra
2009-03-07 21:35 ` Rafael J. Wysocki
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20090406222037.GA18714@localhost \
--to=fengguang.wu@intel.com \
--cc=a.p.zijlstra@chello.nl \
--cc=akpm@linux-foundation.org \
--cc=kernel-testers@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=ming.m.lin@intel.com \
--cc=npiggin@suse.de \
--cc=rjw@sisk.pl \
--cc=torvalds@linux-foundation.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).