On Thu, 23 Nov 2006, Roch - PAE wrote:
>
> Hi Al, You conclude:
>
> No problem there! ZFS rocks. NFS/ZFS is a bad combination.
>
> But my reading of your data leads to:
>
> single threaded small file creation is much slower
> over NFS than locally. regardless of the server FS.
>
> It's been posted on this alias before, Change ZFS to
> anything else and it won't change the conclusion.
> NFS/AnyFS is a bad combination for single threaded tar x.
Hi Roch - you are correct in that the data presented was incomplete. I
did'nt present data for the same test with an NFS mount from the same
server, for a UFS based filesystem. So here is that data point:
$ ptime gunzip -c /tmp/emacs-21.4a.tar.gz |tar xf -
real 12.671
user 2.356
sys 0.228
This test is not totally fair, in that the UFS filesystem being shared is
on a single 400Gb SATA drive being used as the boot device - versus the
5-way raidz config which consists of 5 of those same 400Gb SATA drives.
But the data clearly shows the NFS/ZFS is a bad combination: 2 minutes 33
Seconds for NFS/ZFS versus 13 Seconds (rouding up) for NFS/UFS.
Regards,
Al Hopper Logical Approach Inc, Plano, TX. [EMAIL PROTECTED]
Voice: 972.379.2133 Fax: 972.379.2134 Timezone: US CDT
OpenSolaris.Org Community Advisory Board (CAB) Member - Apr 2005
OpenSolaris Governing Board (OGB) Member - Feb 2006
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