> Do these basically sniff right? Well, the read test seems reasonable. I'm impressed by the speed of the write test ... how large is the raid card cache? And why 8.4? Can you try 9.2? > (NOTE: with barriers off, I get a slight increase - 10% - in the > read-write test, and a larger *decrease* - 15% - with the read-only > test @ 400. No change @ 100) Oh, interesting. Can you reproduce that? I wonder what would cause read-only to drop without barriers ... -- Josh Berkus PostgreSQL Experts Inc. http://pgexperts.com -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance