linux-kernel - Re: regression: 100% io-wait with 2.6.24-rcX

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Message-Id: <200801071440.14798.lists@naasa.net>
Date:	Mon, 7 Jan 2008 14:40:13 +0100
From:	Joerg Platte <lists@...sa.net>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Fengguang Wu <wfg@...l.ustc.edu.cn>
Subject: Re: regression: 100% io-wait with 2.6.24-rcX

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 00000046 00000286 f41c2f14 f5194ce0 00000286
> > 00000286 f41c2f14 kernel:        00175279 f41c2f6c 00000000 c0271f6c
> > f5ff363c f5ff3644 c0354a90 c0354a90 kernel:        00175279 c0123251
> > f5194b80 c03546c0 c0271f67 6c666470 00687375 00000000 kernel: Call Trace:
> > kernel:  [<c0271f6c>] schedule_timeout+0x6e/0x8b
> > kernel:  [<c0123251>] process_timeout+0x0/0x5
> > kernel:  [<c0271f67>] schedule_timeout+0x69/0x8b
> > kernel:  [<c027179a>] __sched_text_start+0x3a/0x70
> > kernel:  [<c014d34b>] congestion_wait+0x4e/0x62
> > kernel:  [<c012be2b>] autoremove_wake_function+0x0/0x33
> > kernel:  [<c014971e>] pdflush+0x0/0x1bf
> > kernel:  [<c01493c6>] wb_kupdate+0x8c/0xd1
> > kernel:  [<c014971e>] pdflush+0x0/0x1bf
> > kernel:  [<c0149839>] pdflush+0x11b/0x1bf
> > kernel:  [<c014933a>] wb_kupdate+0x0/0xd1
> > kernel:  [<c012bd71>] kthread+0x36/0x5d
> > kernel:  [<c012bd3b>] kthread+0x0/0x5d
> > kernel:  [<c010493b>] kernel_thread_helper+0x7/0x10
> > kernel:  =======================
>
> What filesystem are you using?

Here you can see all currently mounted filesystems:

/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 /proc/bus/usb type usbfs (rw)
udev on /dev type tmpfs (rw,mode=0755)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620)
fusectl on /sys/fs/fuse/connections type fusectl (rw)
/dev/sda7 on /tmp type ext2 (rw,noatime,errors=remount-ro,acl)
/dev/sda8 on /export type ext3 (rw,noatime,errors=remount-ro,acl)
/dev/sda1 on /winxp type ntfs (rw,umask=002,gid=10000,nls=utf8)
rpc_pipefs on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
automount(pid4936) on /amnt type autofs 
(rw,fd=4,pgrp=4936,minproto=2,maxproto=4)
automount(pid4965) on /home type autofs 
(rw,fd=4,pgrp=4965,minproto=2,maxproto=4)
nfsd on /proc/fs/nfsd type nfsd (rw)
/export/home/jplatte on /home/jplatte type none (rw,bind)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc 
(rw,noexec,nosuid,nodev)

regards,
Jörg

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