On Wed, Aug 17, 2011 at 01:32:41PM -0500, Ogden wrote: > > On Aug 17, 2011, at 1:31 PM, k...@rice.edu wrote: > > > On Wed, Aug 17, 2011 at 01:26:56PM -0500, Ogden wrote: > >> I am using bonnie++ to benchmark our current Postgres system (on RAID 5) > >> with the new one we have, which I have configured with RAID 10. The drives > >> are the same (SAS 15K). I tried the new system with ext3 and then XFS but > >> the results seem really outrageous as compared to the current system, or > >> am I reading things wrong? > >> > >> The benchmark results are here: > >> > >> http://malekkoheavyindustry.com/benchmark.html > >> > >> > >> Thank you > >> > >> Ogden > > > > That looks pretty normal to me. > > > > Ken > > But such a jump from the current db01 system to this? Over 20 times > difference from the current system to the new one with XFS. Is that much of a > jump normal? > > Ogden
Yes, RAID5 is bad for in many ways. XFS is much better than EXT3. You would get similar results with EXT4 as well, I suspect, although you did not test that. Regards, Ken -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
