Re: pg_autovacuum is nice ... but ...

On Wed, 3 Nov 2004, Tom Lane wrote:

> "Marc G. Fournier" <scrappy@postgresql.org> writes:
>> Here is a vacuum verbose on gborg's database:
>
>> INFO:  free space map: 1000 relations, 7454 pages stored; 23072 total pages needed
>> DETAIL:  Allocated FSM size: 1000 relations + 20000 pages = 178 kB shared memory.
>> and this is portal:
>
>> INFO:  free space map: 1000 relations, 7425 pages stored; 23024 total pages needed
>> DETAIL:  Allocated FSM size: 1000 relations + 20000 pages = 178 kB shared memory.
>
>> so, you tell me ... should I increase them?
>
> Yup. 20000 < 23072, so you're losing some proportion of FSM entries.
> What's worse, the FSM relation table is maxed out (1000 = 1000) which
> suggests that there are relations not being tracked at all; you have
> no idea how much space is getting leaked in those.

'k, increased to 25000/1500, and am runninga  vacuum on all databases now
...

----
Marc G. Fournier           Hub.Org Networking Services (http://www.hub.org)
Email: scrappy@hub.org           Yahoo!: yscrappy              ICQ: 7615664