On Mon, Mar 20, 2006 at 04:19:12PM +0100, Csaba Nagy wrote: > What I can add from our experience: ext3 turned out lousy for our > application, and converting to XFS made a quite big improvement for our > DB load. I don't have hard figures, but I think it was some 30% > improvement in overall speed, and it had a huge improvement for heavy > load times... what I mean is that with ext3 we had multiple parallel big > tasks executing in more time than if we would have executed them > sequentially, and with XFS that was gone, load scales linearly. In any > case you should test the performance of your application on different FS > and different settings, as this could make a huge difference. Did you try mounting ext3 whith data=writeback by chance? People have found that makes a big difference in performance. http://archives.postgresql.org/pgsql-performance/2003-01/msg00320.php -- Jim C. Nasby, Sr. Engineering Consultant jnasby@xxxxxxxxxxxxx Pervasive Software http://pervasive.com work: 512-231-6117 vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
