On Tue, 2009-05-12 at 14:28 +0200, Dimitri wrote: > As problem I'm considering a scalability issue on Read-Only workload - > only selects, no disk access, and if on move from 8 to 16 cores we > gain near 100%, on move from 16 to 32 cores it's only 10%... Dimitri, Will you be re-running the Read-Only tests? Can you run the Dtrace script to assess LWlock contention during the run? Would you re-run the tests with a patch? Thanks, -- Simon Riggs www.2ndQuadrant.com PostgreSQL Training, Services and Support -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance