"Christopher Kings-Lynne" <chriskl@familyhealth.com.au> writes:
> Hang on - so when vacuum runs it knows exactly how many pages it cleaned up
> but if the fsm value is low, it doesn't help? Why don't we just
> automaticlaly set the FSM value to the max that vacuum has to clean
> up?
Because we can't resize shared memory on-the-fly.
regards, tom lane