Yaroslav Mazurak <[EMAIL PROTECTED]> writes:
>       Current postgresql.conf settings (some) are:

> max_locks_per_transaction = 16

This strikes me as a really bad idea --- you save little space by
reducing it from the default, and open yourself up to unexpected failures.

> wal_buffers = 256

That is almost certainly way more than you need.

> sort_mem = 131072

People have already told you that one's a bad idea.

> commit_delay = 32000

I'm unconvinced that setting this nonzero is a good idea.  Have you done
experiments to prove that you get a benefit?

> enable_seqscan = false

This is the cause of the bizarre-looking cost estimates.  I don't
recommend setting it false as a system-wide setting.  If you want
to nudge the planner towards indexscans, reducing random_page_cost
a little is probably a better way.

                        regards, tom lane

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