Re: [PATCHES] A way to let Vacuum warn if FSM settings are low.

> I find this tiny (9-line) patch useful to help my clients know
> when FSM settings may need updating.
>
> Some of the more frequently asked questions here are in regards to FSM
> settings. One hint I've seen is to run "vacuum verbose;". At the end
> of thousands of lines of INFO and DETAIL messages vacuum verbose has 2
> separate lines with some numbers to compare ("total pages needed" and
> "FSM size...pages") that help indicate too low fsm settings.
>
>
> I've gotten into the habit of always installing the following patch
> (below) that automatically does this comparison for me, and if
> max_fsm_pages is too small, it logs a warning as shown here:
>
> patched=# vacuum;
> WARNING: max_fsm_pages(1601) is smaller than total pages needed(2832)
> VACUUM

I think this patch is great. I can never figure out how to set those
settings easily.

Chris