Dave Fisk and I spent some time evaluating Thumper and ZFS as part of the beta program. We collected tons of data and results that we fed back to Sun. I just blogged a short summary at http://perfcap.blogspot.com and we are waiting for the final performance fixes, and some spare time to do a retest... Cheers Adrian This message posted from opensolaris.org
Thanks, interesting read. It''ll be nice to see the actual results if Sun ever publishes them. Cheers, David ----- Original Message ----- From: Adrian Cockcroft <acockcroft at ebay.com> Date: Monday, August 7, 2006 3:23 pm Subject: [zfs-discuss] ZFS/Thumper experiences To: zfs-discuss at opensolaris.org> Dave Fisk and I spent some time evaluating Thumper and ZFS as part > of the beta program. We collected tons of data and results that we > fed back to Sun. I just blogged a short summary at > http://perfcap.blogspot.com and we are waiting for the final > performance fixes, and some spare time to do a retest... > > Cheers Adrian > > > This message posted from opensolaris.org > _______________________________________________ > zfs-discuss mailing list > zfs-discuss at opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss >
Hello David,
Tuesday, August 8, 2006, 3:39:42 AM, you wrote:
DJO> Thanks, interesting read. It''ll be nice to see the actual
DJO> results if Sun ever publishes them.
You may bet I''ll post some results hopefully soon :)
--
Best regards,
Robert mailto:rmilkowski at task.gda.pl
http://milek.blogspot.com
Hello, I really appreciate such information, could you please give us some additional insight regarding your statement, that "[you] tried to drive ZFS to its limit, [...] found that the results were less consistent or predictable". Especially when taking a closer look at the upcoming rdbms+thumper bundles, "erratic behavior" of the system would not be a thing I''d appreciate in a production environment. In addition to that I''d like to know whether you''ve got some advice regarding the disk setup. Is it advisable to place Solaris on a separate zfs mirror and to use the rest of the disks in a single or multiple raid-z pool(s)? Many thanks in advance, Jochen This message posted from opensolaris.org
Jochen, On 8/8/06 10:47 AM, "Jochen M. Kaiser" <jochen.m.kaiser at t-online.de> wrote:> I really appreciate such information, could you please give us some additional > insight regarding your statement, that "[you] tried to drive ZFS to its limit, > [...] > found that the results were less consistent or predictable". > Especially when taking a closer look at the upcoming rdbms+thumper bundles, > "erratic behavior" of the system would not be a thing I''d appreciate in a > production environment.Adrian''s tests were done on code prior to fixing the I/O scheduler and prefetch logic. We at Greenplum worked with the ZFS team extensively to locate the problems and establish predictable behavior from ZFS prior to the release of the DBMS + Thumper system. The fixes are apparently due sometime soon as part of the nv_45 release on Solaris Express, and will be part of Sol10 U3. - Luke