Hi, I suspect a CPU bottleneck in one of our PostgreSQL servers but not sure how to confirm the suspect. It's a DELL Box running CentOS 5.4 with 64GB RAM and 16 XEON E7430 2.13 GHz processors. vmstat r column "run queue" usually indicates values higher than 2 and less than 5 but "Load Average" values from top, sar -q and other commands show always values less than 1. Should not these values be higher than 16 on a box with 16 processors to confirm a CPU constraint? Thank you in advance! -- Reimer 47-3347-1724 47-9183-0547 msn: carlos.reimer at opendb.com.br