On 11/26/07, Damon Hart <dhcom@xxxxxxxxxxx> wrote: > So, what's different between these tests? I'm seeing performance > differences of between +65% to +90% transactions per second of the > OpenVZ kernel running on the HN over the stock Fedora 8 kernel. Is > this reflective of different emphasis between RHEL and Fedora kernel > builds? Some OpenVZ optimization on top of the RHEL5 build? Something > else? Where should I look? A recent FreeBSD benchmark (which also tested Linux performance) found major performance differences between recent versions of the kernel, possibly attributable to the new so-called completely fair scheduler: http://archives.postgresql.org/pgsql-performance/2007-11/msg00132.php No idea if it's relevant. Alexander. ---------------------------(end of broadcast)--------------------------- TIP 7: You can help support the PostgreSQL project by donating at http://www.postgresql.org/about/donate
