Messages in this thread | | | From | Joerg Platte <> | Subject | Re: regression: 100% io-wait with 2.6.24-rcX | Date | Wed, 9 Jan 2008 14:04:29 +0100 |
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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 > > > 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 disk and cdrom drive and booted with hpet=force. Kernel 2.6.23.X has > > been > > ~~~~~~~~ > not 2.6.24-rc7? > No, 2.6.23.X was the last working kernel without this problem, the bug shows up with 2.6.24-rcX. I just wanted to emphasis, that I don't think that it has something to do with the hpet stuff. Kernel 2.6.24-rcX is unpatched, because the hrt stuff has been merged.
> > patched with the -hrt patches to enable the hidden hpet time on the > > ICH4-M chipset. I just rebooted the notebook and mounted /tmp again as > > ext2 and now the iowait problem is back. Seems to be reproducible on my > > computer. What additional information do you need? > > I mounted an ext2 as tmp and find no problem. My config options are: > > CONFIG_EXT2_FS=y > CONFIG_EXT2_FS_XATTR=y > CONFIG_EXT2_FS_POSIX_ACL=y > CONFIG_EXT2_FS_SECURITY=y > # CONFIG_EXT2_FS_XIP is not set > > Fengguang
CONFIG_EXT2_FS=m CONFIG_EXT2_FS_XATTR=y CONFIG_EXT2_FS_POSIX_ACL=y CONFIG_EXT2_FS_SECURITY=y CONFIG_EXT2_FS_XIP=y
Here it is modular and I enabled CONFIG_EXT2_FS_XIP, but the same is enabled on 2.6.23.X. Maybe it is related to libata? I additionally discovered, that the problem disappears for a few seconds when I press the eject button for the ultra bay of my thinkpad. Pressing the button unregisters the cdrom drive to be able to replace it with a hard drive or a battery. Maybe this bug is thinkpad relared?
regards, Jörg
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