| From: | "Marc G(dot) Fournier" <scrappy(at)postgresql(dot)org> |
|---|---|
| To: | Justin Clift <justin(at)postgresql(dot)org> |
| Cc: | pgsql-www(at)postgresql(dot)org |
| Subject: | Re: pg_autovacuum is nice ... but ... |
| Date: | 2004-11-04 00:20:47 |
| Message-ID: | 20041103201625.S82047@ganymede.hub.org |
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| Thread: | |
| Lists: | pgsql-hackers pgsql-www |
On Thu, 4 Nov 2004, Justin Clift wrote:
> Marc G. Fournier wrote:
> <snip>
>> Do a vacuum full analyze on the two databases being called, and load time
>> went from 2.4sec to .46sec:
>
> Hmmmm, is there any chance your Free Space Map settings aren't high enough?
I posted once asking about that, but got no responses :)
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? I haven't been able to find
any docs that talk about this :(
----
Marc G. Fournier Hub.Org Networking Services (http://www.hub.org)
Email: scrappy(at)hub(dot)org Yahoo!: yscrappy ICQ: 7615664
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