Hi Janice,
> Hello. I am looking to see if performance data exists for on-disk dedup. I
> am currently in the process of setting up some tests based on input from
> Roch, but before I get started, thought I'd ask here.
I find it somewhat interesting that you are asking this question on behalf of
work you are doing for Roch, wherein Roch posted the following blog, with
references.
http://blogs.sun.com/roch/entry/dedup_performance_considerations1
That said, there is the ZFS page:
http://hub.opensolaris.org/bin/view/Community+Group+zfs/dedup
As far as synthetic testing of dedup, I found that the latest version of
VDBench supports dedup, and is helpful on narrowing in on specific issues
related to the size of the DDT, the ARC and L2ARC.
http://blogs.sun.com/henk/entry/first_beta_version_of_vdbench
Jim
>
> Thanks for the help,
> Janice
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