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Andrew Benton | 29 May 2012 15:40
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Disk IO with the 3.4 kernel

Hello all
Is it just me or is anyone else having a problem with the computer
locking up when there's any heavy disk input/output going on? If I
untar a large source tarball (like Firefox or something) then other
applications lock up and stop responding if they need to read anything
at all off the disk. I never used to have this problem so I'm assuming
it's something that changed in the 3.4 kernel. For me it seems to be
quite a serious regression.

Andy
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Ken Moffat | 29 May 2012 18:26

Re: Disk IO with the 3.4 kernel

On Tue, May 29, 2012 at 02:40:12PM +0100, Andrew Benton wrote:
> Hello all
> Is it just me or is anyone else having a problem with the computer
> locking up when there's any heavy disk input/output going on? If I
> untar a large source tarball (like Firefox or something) then other
> applications lock up and stop responding if they need to read anything
> at all off the disk. I never used to have this problem so I'm assuming
> it's something that changed in the 3.4 kernel. For me it seems to be
> quite a serious regression.
> 
> Andy

 Do you have an older kernel, and is it *still* ok with that ?

 I suspect you might have a problem with the disk.  Do you have
smartmontools installed ?  Or, possibly, libatasmart (I found that
one hard to use when I tested it).  I hope that suspicion is wrong,
because recovering from disk failures can be painful.

 In my own use 3.4.0 seems fine.

ĸen
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Andrew Benton | 30 May 2012 00:32
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Re: Disk IO with the 3.4 kernel

On Tue, 29 May 2012 17:26:31 +0100
Ken Moffat <zarniwhoop <at> ntlworld.com> wrote:

>  Do you have an older kernel, and is it *still* ok with that ?
> 
>  I suspect you might have a problem with the disk.  Do you have
> smartmontools installed ?  Or, possibly, libatasmart (I found that
> one hard to use when I tested it).  I hope that suspicion is wrong,
> because recovering from disk failures can be painful.
> 
>  In my own use 3.4.0 seems fine.

Thanks for you reply Ken. Gsmartcontrol (a GTK frontend for
smartmontools) says the disk is fine. If 3.4.0 is fine for you that
makes me suspect it's the filesystem as I use Btrfs and I suspect you
don't ;)

Andy
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Ken Moffat | 30 May 2012 03:25

Re: Disk IO with the 3.4 kernel

On Tue, May 29, 2012 at 11:32:33PM +0100, Andrew Benton wrote:
> 
> Thanks for you reply Ken. Gsmartcontrol (a GTK frontend for
> smartmontools) says the disk is fine. If 3.4.0 is fine for you that
> makes me suspect it's the filesystem as I use Btrfs and I suspect you
> don't ;)
> 
 True.  It's on my to-try-sometime list, and my old machine is
sitting idle waiting for that sort of testing.  But, I suspect that
as a single-core x86_64 with only 1GB it will *always* be slow for
me.  Glad your disk is ok.

ĸen
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