Disappointing speed with ZFS

Niki Denev nike_d at cytexbg.com
Mon Feb 11 22:05:31 UTC 2008

On Feb 11, 2008 7:05 PM, Alexey Tarasov <me at lexasoft.ru> wrote:
> I've done similar tests on the other machine, and all looks fine.
> But why on this machine ZFS works slower than UFS? When I make UFS
> file system on the same disk, rtorrent hashing works 10 times faster.
> And while hashing, HDD is used three times intensively with ZFS
> (noticed by flashing LED).
> I have an amd64 Core2Duo processor, 4 Gb of RAM, what is not enough
> for ZFS?
> What kernel tuning can help me?

What happens when you disable ZFS prefetching by putting :
in your /boot/loader.conf?


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