On Sun, Aug 2, 2009 at 10:04 PM, Chris Dunn<chris.dunn@bigredsky.com> wrote:
> The database is 8gb currently. Use to be a lot bigger but we removed all large objects out and developed a file
serverstorage for it, and using default page costs for 8.4, I did have it changed in 8.1.4
You might want to play with lowering them. The default page costs
make page accesses expensive relative to per-tuple operations, which
is appropriate if you are I/O-bound but not so much if you are CPU
bound, and especially if the whole database is memory resident. I'd
try something like random_page_cost = seq_page_cost = 0.1 for
starters, or whatever values were working for you in 8.1, but the
sweet spot may be higher or lower.
...Robert
