On 5 Září 2011, 16:08, Gerhard Wohlgenannt wrote: > Below please find the results of vmstat 2 over some periode of time .. > with normal database / system load. What does a "normal load" mean? Does that mean a time when the queries are slow? Are you sure the machine really has 48GB of RAM? Because from the vmstat output it seems like there's just 32GB. procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 0 0 1342168 336936 107636 31353512 0 0 14 183 1911 3426 2 1 93 4 1342168 + 336936 + 107636 + 31353512 = 33140252 ~ 31GB BTW there's 1.3GB of swap, although it's not used heavily (according to the vmstat output). Otherwise I don't see anything wrong in the output. What is the size of the database (use pg_database_size to get it)? Did it grow significantly recently? Tomas -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance