Some comments on ZFS

Thomas Sparrevohn Thomas.Sparrevohn at
Mon Apr 16 17:43:55 UTC 2007

On Monday 16 April 2007 11:28:50 Gary Jennejohn wrote:
> Is there any ZFS setting analogous to async which I could use to speed up
> transfers?

My system shows significant worse performance with ZFS - I suspect that this 
is because the devices are part of a ATAPI-RAID 0  already

but here is the story - A

UFS + Softupdates -  

 make -j 4 buildworld - app. 24 Min (Debugging kernel)

ZFS same command but with usr/obj on ZFS 

make -j 4 buildworld - app. 1h12m

The weird thing is that one sees some fantastic peak transfer numbers e.g.
up to 112MB/s - Compression is off

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