Re: OSDL Database Test Suite 3 is available on PostgreSQL

On 01 Aug 2003 11:04:10 -0700, Jenny Zhang <jenny@osdl.org> wrote:
>A sample OSDL-DBT3 test result report can be found at:
>http://khack.osdl.org/stp/276912/
>
>Your comments are welcome,

| effective_cache_size           | 1000

With 4GB of memory this is definitely too low and *can* (note that I
don't say *must*) lead the planner to wrong decisions.

| shared_buffers                 | 15200

... looks reasonable.  Did you test with other values?

| sort_mem                       | 524288

This is a bit high, IMHO, but might be ok given that DBT3 is not run
with many concurrent sessions (right?).
http://khack.osdl.org/stp/276912/results/plot/vmstat_swap.png shows
some swapping activity towards the end of the run which could be
caused by a too high sort_mem setting.

Servus
 Manfred