Re: linux-next: Tree for December 27

[Piotr Hosowicz]

On 27.12.2010 16:13, Piotr Hosowicz wrote:
> On 27.12.2010 16:08, Sedat Dilek wrote:
> > 2010/12/27 Piotr Hosowicz<piotr@xxxxxxxxxxxx>:
> > > On 27.12.2010 15:48, Sedat Dilek wrote:
> > > > 2010/12/27 Piotr Hosowicz<piotr@xxxxxxxxxxxx>:
> > > > > On 27.12.2010 07:04, Stephen Rothwell wrote:
> > > > >
> > > > > Hello,
> > > > >
> > > > > I noticed that after first reboot with this kernel that my MP3
> > > > > collection
> > > > > in
> > > > > mocp layed on Ext4 fs opens painfully slow. It is not my mistake,
> > > > > because
> > > > > I
> > > > > always do it the same way, new kernel, then music on. The problem
> > > > > is not
> > > > > present in rc7-git4. I could measure it in some way (timing ls -la
> > > > > in tht
> > > > > dir?) if somebody needs it.
> > > > >
> > > > > Regards,
> > > > >
> > > > > Piotr Hosowicz
> > > >
> > > > You tried mblk_io_submit mount-option for that partition?
> > >
> > > No, I do not use it, I do not even know what it is. My options are:
> > >
> > > /dev/sda2 on / type ext4 (rw,errors=remount-ro)
> >
> > Have a closer look at "ext4: Turn off multiple page-io submission by
> > default"
>
> I tried to Google for mblk_io_submit but I didn't find anything helpful.
> Could you tell me how should I add this option in fstab and what will be
> its effect?

As far as I understand that option regards writing, not reading. The 
symptoms I described occured while reading only.

Regards,

Piotr Hosowicz

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