Re: yum upgrade on btrfs very slow

Chris Mason
2009-10-26T08:55:45Z

On Wed, Oct 21, 2009 at 11:27:33AM +0200, Tomasz Torcz wrote:
> On Thu, Oct 01, 2009 at 11:01:46AM +0200, Tomasz Torcz wrote:
> > On Wed, Sep 30, 2009 at 09:43:51PM +0200, Tomasz Torcz wrote:
> > > >
> > > > If you're comparing w/ext3 and wondering why btrfs is sooooooo much
> > > > slower it might be because btrfs has barriers on by default and ext3
> > > > doesn't. You could mount -o nobarrier for btrfs or mount -o barrier=1
> > > > for ext3 for a proper comparison.
>
> Last update: things got noticably faster with 2.6.31.4-88.fc12.x86_64,
> which contains backport of latest mainline btrfs (thank you, Josef!).
> No more comlains from me (for now ;).

Fantastic. Are you running with or without barriers now?

-chris