ZFS performance

[Kris Kennaway]

On Tue, May 29, 2007 at 01:12:18AM +0200, St?le Kristoffersen wrote:
> On 2007-05-14 at 10:42, Nick Gustas wrote:
> > I see the same behavior that St?le is seeing, I can "fix" it by setting 
> > vfs.zfs.prefetch_disable="1" in loader.conf.  I'm assuming something in 
> > the prefetch code isn't quite right?
> 
> Ah, this _greatly_ improved the usability of my fileserver! Thanks for the
> tip :)

How does filesystem performance change?  I thought ZFS needs to do
prefetching to improve read performance.

Kris