EMAIL PROTECTED]>; Neil Brown <[EMAIL PROTECTED]>
> Sent: Wednesday, January 23, 2008 12:40:52 AM
> Subject: Re: regression: 100% io-wait with 2.6.24-rcX
>
> On Tue, Jan 22, 2008 at 07:25:15AM -0800, Martin Knoblauch wrote:
> > [EMAIL PROTECTED] ~]# dmsetup table
> &g
On Tue, Jan 22, 2008 at 07:25:15AM -0800, Martin Knoblauch wrote:
> [EMAIL PROTECTED] ~]# dmsetup table
> VolGroup00-LogVol02: 0 350945280 linear 104:2 67109248
> VolGroup00-LogVol01: 0 8388608 linear 104:2 418054528
> VolGroup00-LogVol00: 0 67108864 linear 104:2 384
The IO should pass straight
t;[EMAIL PROTECTED]>; Neil Brown <[EMAIL PROTECTED]>
> Sent: Tuesday, January 22, 2008 3:39:33 PM
> Subject: Re: regression: 100% io-wait with 2.6.24-rcX
>
>
> See if these patches make any difference:
>
http://www.kernel.org/pub/linux/kernel/people/agk/patches/2.6/editing/
quot;[EMAIL PROTECTED]" <[EMAIL
> PROTECTED]>; [EMAIL PROTECTED]; Jens Axboe <[EMAIL PROTECTED]>; Milan Broz
> <[EMAIL PROTECTED]>; Neil Brown <[EMAIL PROTECTED]>
> Sent: Tuesday, January 22, 2008 3:39:33 PM
> Subject: Re: regression: 100% io-wait with 2.6
On Fri, Jan 18, 2008 at 11:01:11AM -0800, Martin Knoblauch wrote:
> At least, rc1-rc5 have shown that the CCISS system can do well. Now
> the question is which part of the system does not cope well with the
> larger IO sizes? Is it the CCISS controller, LVM or both. I am open to
> suggestions on h
ROTECTED]>; [EMAIL
> PROTECTED]; Ingo Molnar <[EMAIL PROTECTED]>; linux-kernel@vger.kernel.org;
> "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>; [EMAIL PROTECTED]
> Sent: Friday, January 18, 2008 11:47:02 PM
> Subject: Re: regression: 100% io-wait with 2.6.24-rcX
>
>
On Jan 18, 2008 3:00 PM, Mike Snitzer <[EMAIL PROTECTED]> wrote:
>
> On Jan 18, 2008 12:46 PM, Linus Torvalds <[EMAIL PROTECTED]> wrote:
> >
> >
> > On Fri, 18 Jan 2008, Mel Gorman wrote:
> > >
> > > Right, and this is consistent with other complaints about the PFN of the
> > > page mattering to so
On Jan 18, 2008 12:46 PM, Linus Torvalds <[EMAIL PROTECTED]> wrote:
>
>
> On Fri, 18 Jan 2008, Mel Gorman wrote:
> >
> > Right, and this is consistent with other complaints about the PFN of the
> > page mattering to some hardware.
>
> I don't think it's actually the PFN per se.
>
> I think it's sim
On Fri, 18 Jan 2008, Martin Knoblauch wrote:
>
> just to make one thing clear - I am not so much concerned about the
> performance of AACRAID. It is OK with or without Mel's patch. It is
> better with Mel's patch. The regression in DIO compared to 2.6.19.2 is
> completely independent of Mel's st
--- Linus Torvalds <[EMAIL PROTECTED]> wrote:
>
>
> On Fri, 18 Jan 2008, Mel Gorman wrote:
> >
> > Right, and this is consistent with other complaints about the PFN
> > of the page mattering to some hardware.
>
> I don't think it's actually the PFN per se.
>
> I think it's simply that some c
On Fri, 18 Jan 2008, Mel Gorman wrote:
>
> Right, and this is consistent with other complaints about the PFN of the
> page mattering to some hardware.
I don't think it's actually the PFN per se.
I think it's simply that some controllers (quite probably affected by both
driver and hardware lim
On (18/01/08 00:19), Martin Knoblauch didst pronounce:
> > > The effect is defintely depending on the IO hardware.
> > > performed the same tests
> > > on a different box with an AACRAID controller and there things
> > > look different.
> >
> > I take it different also means it does not show
olnar <[EMAIL
> PROTECTED]>; linux-kernel@vger.kernel.org; "[EMAIL PROTECTED]" <[EMAIL
> PROTECTED]>; Linus Torvalds <[EMAIL PROTECTED]>; [EMAIL PROTECTED]
> Sent: Thursday, January 17, 2008 11:12:21 PM
> Subject: Re: regression: 100% io-wait with 2.6.24-rcX
>
On (17/01/08 13:50), Martin Knoblauch didst pronounce:
> >
>
> The effect is defintely depending on the IO hardware. I performed the
> same tests
> on a different box with an AACRAID controller and there things look different.
I take it different also means it does not show this odd perfo
olnar <[EMAIL
> PROTECTED]>; linux-kernel@vger.kernel.org; "[EMAIL PROTECTED]" <[EMAIL
> PROTECTED]>; Linus Torvalds <[EMAIL PROTECTED]>; [EMAIL PROTECTED]
> Sent: Thursday, January 17, 2008 9:23:57 PM
> Subject: Re: regression: 100% io-wait with 2.6.24-rcX
>
&g
On (17/01/08 09:44), Martin Knoblauch didst pronounce:
> > > > > > > On Wed, Jan 16, 2008 at 01:26:41AM -0800, Martin Knoblauch wrote:
> > > > > > For those interested in using your writeback improvements in
> > > > > > production sooner rather than later (primarily with ext3); what
> > > > > > rec
nux-kernel@vger.kernel.org; "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>; Linus
> Torvalds <[EMAIL PROTECTED]>
> Sent: Thursday, January 17, 2008 5:11:50 PM
> Subject: Re: regression: 100% io-wait with 2.6.24-rcX
>
>
> I've backported Peter's perbdi patchs
nux-kernel@vger.kernel.org; "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>; Linus
> Torvalds <[EMAIL PROTECTED]>
> Sent: Thursday, January 17, 2008 2:52:58 PM
> Subject: Re: regression: 100% io-wait with 2.6.24-rcX
>
> - Original Message
> > From: Feng
lt;[EMAIL PROTECTED]>;
> > [EMAIL PROTECTED]; Ingo Molnar <[EMAIL PROTECTED]>;
> > linux-kernel@vger.kernel.org; "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>;
> > Linus Torvalds <[EMAIL PROTECTED]>
> > Sent: Wednesday, January 16, 2008 1:00:04 PM
nux-kernel@vger.kernel.org; "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>; Linus
> Torvalds <[EMAIL PROTECTED]>
> Sent: Wednesday, January 16, 2008 1:00:04 PM
> Subject: Re: regression: 100% io-wait with 2.6.24-rcX
>
> On Wed, Jan 16, 2008 at 01:26:41AM -0800, Martin K
[EMAIL PROTECTED]>;
> > [EMAIL PROTECTED]; Ingo Molnar <[EMAIL PROTECTED]>;
> > linux-kernel@vger.kernel.org; "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>;
> > Linus Torvalds <[EMAIL PROTECTED]>
> > Sent: Wednesday, January 16, 2008 1:00:04 PM
>
nux-kernel@vger.kernel.org; "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>; Linus
> Torvalds <[EMAIL PROTECTED]>
> Sent: Wednesday, January 16, 2008 1:00:04 PM
> Subject: Re: regression: 100% io-wait with 2.6.24-rcX
>
> On Wed, Jan 16, 2008 at 01:26:41AM -0800, Martin K
On Wed, Jan 16, 2008 at 01:26:41AM -0800, Martin Knoblauch wrote:
> > For those interested in using your writeback improvements in
> > production sooner rather than later (primarily with ext3); what
> > recommendations do you have? Just heavily test our own 2.6.24 + your
> > evolving "close, but n
]"
> <[EMAIL PROTECTED]>; Linus Torvalds <[EMAIL PROTECTED]>; Andrew Morton
> <[EMAIL PROTECTED]>
> Sent: Tuesday, January 15, 2008 10:13:22 PM
> Subject: Re: regression: 100% io-wait with 2.6.24-rcX
>
> On Jan 14, 2008 7:50 AM, Fengguang Wu wrote:
> >
On Tue, Jan 15, 2008 at 04:13:22PM -0500, Mike Snitzer wrote:
> On Jan 14, 2008 7:50 AM, Fengguang Wu <[EMAIL PROTECTED]> wrote:
> > On Mon, Jan 14, 2008 at 12:41:26PM +0100, Peter Zijlstra wrote:
> > >
> > > On Mon, 2008-01-14 at 12:30 +0100, Joerg Platte wrote:
> > > > Am Montag, 14. Januar 2008
On Tue, Jan 15, 2008 at 10:42:13PM +0100, Ingo Molnar wrote:
>
> * Fengguang Wu <[EMAIL PROTECTED]> wrote:
>
> > On Mon, Jan 14, 2008 at 12:41:26PM +0100, Peter Zijlstra wrote:
> > >
> > > On Mon, 2008-01-14 at 12:30 +0100, Joerg Platte wrote:
> > > > Am Montag, 14. Januar 2008 schrieb Fengguang
* Fengguang Wu <[EMAIL PROTECTED]> wrote:
> On Mon, Jan 14, 2008 at 12:41:26PM +0100, Peter Zijlstra wrote:
> >
> > On Mon, 2008-01-14 at 12:30 +0100, Joerg Platte wrote:
> > > Am Montag, 14. Januar 2008 schrieb Fengguang Wu:
> > >
> > > > Joerg, this patch fixed the bug for me :-)
> > >
> > >
On Jan 14, 2008 7:50 AM, Fengguang Wu <[EMAIL PROTECTED]> wrote:
> On Mon, Jan 14, 2008 at 12:41:26PM +0100, Peter Zijlstra wrote:
> >
> > On Mon, 2008-01-14 at 12:30 +0100, Joerg Platte wrote:
> > > Am Montag, 14. Januar 2008 schrieb Fengguang Wu:
> > >
> > > > Joerg, this patch fixed the bug for
On Mon, Jan 14, 2008 at 12:41:26PM +0100, Peter Zijlstra wrote:
>
> On Mon, 2008-01-14 at 12:30 +0100, Joerg Platte wrote:
> > Am Montag, 14. Januar 2008 schrieb Fengguang Wu:
> >
> > > Joerg, this patch fixed the bug for me :-)
> >
> > Fengguang, congratulations, I can confirm that your patch f
On Mon, 2008-01-14 at 12:30 +0100, Joerg Platte wrote:
> Am Montag, 14. Januar 2008 schrieb Fengguang Wu:
>
> > Joerg, this patch fixed the bug for me :-)
>
> Fengguang, congratulations, I can confirm that your patch fixed the bug! With
> previous kernels the bug showed up after each reboot. No
Am Montag, 14. Januar 2008 schrieb Fengguang Wu:
> Joerg, this patch fixed the bug for me :-)
Fengguang, congratulations, I can confirm that your patch fixed the bug! With
previous kernels the bug showed up after each reboot. Now, when booting the
patched kernel everything is fine and there is
On Mon, Jan 14, 2008 at 11:54:39AM +0800, Fengguang Wu wrote:
> > particular this bug is triggered because the dir mapping page has
> > PAGECACHE_TAG_DIRTY set and PG_dirty cleared, staying in an
> > inconsistent state.
>
> Just found that a deleted dir will enter that inconsistent state when
> so
On Sun, Jan 13, 2008 at 07:59:33PM +0800, Fengguang Wu wrote:
> On Sun, Jan 13, 2008 at 10:49:31AM +0100, Joerg Platte wrote:
> > register_jprobe(ext2_writepage) = 0
> > register_jprobe(requeue_io) = 0
> > register_kprobe(submit_bio) = 0
> > requeue_io:
> > inode 114019(sda7/.kde) count 2,2 size 0
On Sun, Jan 13, 2008 at 10:49:31AM +0100, Joerg Platte wrote:
> register_jprobe(ext2_writepage) = 0
> register_jprobe(requeue_io) = 0
> register_kprobe(submit_bio) = 0
> requeue_io:
> inode 114019(sda7/.kde) count 2,2 size 0 pages 1
> 0 2 0 U
> requeue_io:
> inode 114025(sda7/ca
Am Sonntag, 13. Januar 2008 schrieb Fengguang Wu:
> On Sun, Jan 13, 2008 at 09:05:43AM +0100, Joerg Platte wrote:
> > Am Sonntag, 13. Januar 2008 schrieb Fengguang Wu:
> > > No idea yet :-/ I'm afraid I have to trouble you again - the bug just
> > > refused to appear in my system. I prepared a kern
On Sun, Jan 13, 2008 at 09:05:43AM +0100, Joerg Platte wrote:
> Am Sonntag, 13. Januar 2008 schrieb Fengguang Wu:
>
> > No idea yet :-/ I'm afraid I have to trouble you again - the bug just
> > refused to appear in my system. I prepared a kernel module for you to
> > gather more information:
>
>
Am Sonntag, 13. Januar 2008 schrieb Fengguang Wu:
> No idea yet :-/ I'm afraid I have to trouble you again - the bug just
> refused to appear in my system. I prepared a kernel module for you to
> gather more information:
> make && insmod ext2-writeback-debug.ko && sleep 1s && rmmod
> ext2-writeba
On Sun, Jan 13, 2008 at 12:32:30AM +0100, Joerg Platte wrote:
> Am Freitag, 11. Januar 2008 schrieb Fengguang Wu:
> > On Thu, Jan 10, 2008 at 11:03:05AM +0100, Joerg Platte wrote:
> > > Am Donnerstag, 10. Januar 2008 schrieb Fengguang Wu:
> > > > > problem, because the iowait problem disappeared to
Am Freitag, 11. Januar 2008 schrieb Fengguang Wu:
> On Thu, Jan 10, 2008 at 11:03:05AM +0100, Joerg Platte wrote:
> > Am Donnerstag, 10. Januar 2008 schrieb Fengguang Wu:
> > > > problem, because the iowait problem disappeared today after the
> > > > regular Debian update. I'll try to install the o
Am Freitag, 11. Januar 2008 schrieb Joerg Platte:
> konqueror 987jplatte mem REG8,6 2590525
> 1336104 /var/tmp/kdecache-jplatte/ksycoca
> konqueror 987jplatte 12r REG8,6 2590525
> 1336104 /var/tmp/kdecache-jplatte/ksycoca
> konqueror 987jplatte 1
Am Freitag, 11. Januar 2008 schrieb Fengguang Wu:
> Joerg, what's the output of `dumpe2fs /dev/sda7` and `lsof|grep /tmp`?
Fengang, here is the output (kernel 2.6.24-rc7 without your patches):
Filesystem volume name: TMP
Last mounted on:
Filesystem UUID: e23ae961-bbdc-44bc-b
On Thu, Jan 10, 2008 at 11:03:05AM +0100, Joerg Platte wrote:
> Am Donnerstag, 10. Januar 2008 schrieb Fengguang Wu:
> > > problem, because the iowait problem disappeared today after the regular
> > > Debian update. I'll try to install the old package versions to make it
> > > show up again. Maybe
Am Donnerstag, 10. Januar 2008 schrieb Fengguang Wu:
> > problem, because the iowait problem disappeared today after the regular
> > Debian update. I'll try to install the old package versions to make it
> > show up again. Maybe that helps to debug it.
>
> Thank you. I'm running sid, ext2 as rootfs
On Thu, Jan 10, 2008 at 09:37:53AM +0100, Joerg Platte wrote:
> Am Donnerstag, 10. Januar 2008 schrieb Fengguang Wu:
> > On Thu, Jan 10, 2008 at 03:30:46PM +0800, Fengguang Wu wrote:
> > > Joerg,
> > >
> > > Can you try the attached patches? Thank you.
> > > I cannot reliably reproduce the bug yet.
Am Donnerstag, 10. Januar 2008 schrieb Fengguang Wu:
> On Thu, Jan 10, 2008 at 03:30:46PM +0800, Fengguang Wu wrote:
> > Joerg,
> >
> > Can you try the attached patches? Thank you.
> > I cannot reliably reproduce the bug yet.
>
> Please ignore the first patch and only apply the two debugging
> patc
On Thu, Jan 10, 2008 at 03:30:46PM +0800, Fengguang Wu wrote:
> Joerg,
>
> Can you try the attached patches? Thank you.
> I cannot reliably reproduce the bug yet.
Please ignore the first patch and only apply the two debugging
patches. They will produce many printk messages. The output of
`dmesg
Joerg,
Can you try the attached patches? Thank you.
I cannot reliably reproduce the bug yet.
Fengguang
mm/filemap_xip.c |1 +
1 files changed, 1 insertion(+)
Index: linux/mm/filemap_xip.c
===
--- linux.orig/mm/filemap_xip.c
+++
On Wed, Jan 09, 2008 at 02:04:29PM +0100, Joerg Platte wrote:
> Am Mittwoch, 9. Januar 2008 schrieb Fengguang Wu:
> > On Wed, Jan 09, 2008 at 01:22:33PM +0100, Joerg Platte wrote:
> > > Am Mittwoch, 9. Januar 2008 schrieb Fengguang Wu:
> > >
> > > Thank your for the hint with the filesystems!
> > >
Am Mittwoch, 9. Januar 2008 schrieb Fengguang Wu:
> On Wed, Jan 09, 2008 at 01:22:33PM +0100, Joerg Platte wrote:
> > Am Mittwoch, 9. Januar 2008 schrieb Fengguang Wu:
> >
> > Thank your for the hint with the filesystems!
> >
> > > Thank you for the clue. However I cannot reproduce the bug on
> > >
On Wed, Jan 09, 2008 at 01:22:33PM +0100, Joerg Platte wrote:
> Am Mittwoch, 9. Januar 2008 schrieb Fengguang Wu:
>
> Thank your for the hint with the filesystems!
>
> > Thank you for the clue. However I cannot reproduce the bug on
> > ext2/2.6.24-rc7. Can you provide more details? Thank you.
>
Am Mittwoch, 9. Januar 2008 schrieb Fengguang Wu:
Thank your for the hint with the filesystems!
> Thank you for the clue. However I cannot reproduce the bug on
> ext2/2.6.24-rc7. Can you provide more details? Thank you.
I attached some more information. I'm using the ata_piix driver for my PATA
On Wed, Jan 09, 2008 at 07:13:14AM +0100, Joerg Platte wrote:
> Am Mittwoch, 9. Januar 2008 schrieb Fengguang Wu:
> > > /dev/sda6 on / type ext3 (rw,noatime,errors=remount-ro,acl)
> > > tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
> > > proc on /proc type proc (rw,noexec,nosuid,nodev)
> >
Am Mittwoch, 9. Januar 2008 schrieb Fengguang Wu:
> > /dev/sda6 on / type ext3 (rw,noatime,errors=remount-ro,acl)
> > tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
> > proc on /proc type proc (rw,noexec,nosuid,nodev)
> > sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
> > procbususb on /
On Mon, Jan 07, 2008 at 02:40:13PM +0100, Joerg Platte wrote:
> Am Montag, 7. Januar 2008 schrieb Peter Zijlstra:
> > On Mon, 2008-01-07 at 14:24 +0100, Joerg Platte wrote:
> >
> > This is from: 2.6.24-rc7
> >
> > > kernel: pdflush D f41c2f14 0 18822 2
> > > kernel:f673f000 0
Am Montag, 7. Januar 2008 schrieb Peter Zijlstra:
> On Mon, 2008-01-07 at 14:24 +0100, Joerg Platte wrote:
>
> This is from: 2.6.24-rc7
>
> > kernel: pdflush D f41c2f14 0 18822 2
> > kernel:f673f000 0046 0286 f41c2f14 f5194ce0 0286
> > 0286 f41c2f14 kernel:
On Mon, 2008-01-07 at 14:24 +0100, Joerg Platte wrote:
This is from: 2.6.24-rc7
> kernel: pdflush D f41c2f14 0 18822 2
> kernel:f673f000 0046 0286 f41c2f14 f5194ce0 0286 0286
> f41c2f14
> kernel:00175279 f41c2f6c c0271f6c f5ff363c f5ff364
Am Montag, 7. Januar 2008 schrieb Ingo Molnar:
> do:
>
> echo t > /proc/sysrq-trigger
>
> and send us the dmesg output. If the dmesg output does not include the
> bootup bits then increase CONFIG_LOG_BUF_SHIFT to 20 or so:
>
> CONFIG_LOG_BUF_SHIFT=20
>
> to have a large enough kernel messages
* Joerg Platte <[EMAIL PROTECTED]> wrote:
> Hi,
>
> when booting kernel 2.6.24-rc{4,5,6,7} top reports up to 100% iowait,
> even if no program accesses the disc on my Thinkpad T40p. Kernel
> 2.6.23.12 does not suffer from this. Is there anything I can do to
> find out which process or which p
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