Some comments from the author:
1. It was a preliminary scratch report not meant to be exhaustive and
complete by any means. A comprehensive report of our findings will be
released soon.
2. I claim responsibility for any benchmarks gathered from Thumper and
the Linux/FASST/ZFS configuration. Any metrics regarding the
"Jackrabbit" SI system was provided by others and simply graphed by myself.
3. We didn't have the evaluation unit for long. However, I did have
time to test Thumper configured with both Solaris 10 u2 and Fedora Core
6 Linux (both ext3 and xfs) running iozone, fileop, nfs, dcache, and
gridftp. Comparative results will be in the next report.
4. Why didn't I upgrade to S10U3? Time mostly. Plus it was not clear,
at least to me, that u3 offered much in the way of performance gain in
our configuration. U3 seemed more of a feature upgrade --
(http://www.cuddletech.com/blog/pivot/entry.php?id=777 --> ZFS Command
Improvements and Changes, including RAIDZ-2, Hot-Spares, Recursive
Snapshots, Promotion of Clones, Compact NFSv4 ACL's, Destroyed Pools
Recovery, Error Clearing, ZFS integration with FMA). Correct me if I'm
wrong; i.e., what would we have gained performance-wise using U3 in our
configuration?
5. "Solaris doesn't support dual-core Intel" was an honest mistake. See
earlier comments in this thread.
6. I imagine that the Scalable Informatics crew was indeed upset that
their "Jackrabbit" did not fare as well in our tests. That's life. And
while they may have some valid points in their rebuttal piece (mostly
complaints about our configuration, etc.), well, that's beyond the scope
of this mailing list.
7. Thumper/ZFS fared nicely. I do regret not having the time to have
loaded Solaris Express in order to test iSCSI performance. Does anyone
have benchmarks in this area to share?
--
Robert Petkus
RHIC/USATLAS Computing Facility
Brookhaven National Laboratory
Physics Dept. - Bldg. 510A
Upton, New York 11973
http://www.bnl.gov/RHIC
http://www.acf.bnl.gov
Luke Lonergan wrote:
Has someone e-mailed the author to recommend upgrading to S10U3? I'm
shocked the eval was favorable with S10U2 given S10U3's substantial
performance improvements...
- Luke
Rayson Ho wrote:
Interesting...
http://www.rhic.bnl.gov/RCF/LiaisonMeeting/20070118/Other/thumper-eva
l.pdf
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