-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 11/27/07 18:01, Scott Ribe wrote: >> In general, you can expect any Unix based OS, which includes MacOS X, to >> perform noticeably better than Windows for PostgreSQL. > > Is that really true of BSD UNIXen??? I've certainly heard it's true of > Linux. But with BSD you have the "kernel funnel" which can severely limit > multitasking, regardless of whether threads or processes were used. Apple > has been working toward finer-grained locking precisely because that was a > serious bottleneck which limited OS X server performance. > > Or have I misunderstood and this was only the design of one particular > flavor of BSD, not BSDen in general? IIRC, FreeBSD got rid of the Giant Lock back in v5.x. There was a benchmark in Feb 2007 which demonstrated that FBSD 7.0 scaled *better* than Linux 2.6 after 4 CPUs. http://jeffr-tech.livejournal.com/5705.html Turns out that there was/is a bug in glibc's malloc(). Don't know if it's been fixed yet. - -- Ron Johnson, Jr. Jefferson LA USA %SYSTEM-F-FISH, my hovercraft is full of eels -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFHTMAfS9HxQb37XmcRAg4NAJsFXVFa5NQtctsdrjbNCZ8GRAHMlwCeOfZr kBFOQUI6zGcTDiy793+JSIc= =/W4e -----END PGP SIGNATURE----- ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
