Hi:

I did a vacuum verbose on my database and at the end of the output I got
the following:

INFO: free space map: 85 relations, 18940 pages stored; 29584 total pages
needed
DETAIL: Allocated FSM size: 1000 relations + 20000 pages = 186 kB shared
memory.
VACUUM

Can somebody tell me what that means?

Thanks!

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You need to increase your max_fsm_pages to at least 29584 pages to
accommodate / monitor all free pages.

-----Original Message-----
From: pgsql-admin-owner@postgresql.org
[mailtogsql-admin-owner@postgresql.org]On Behalf Of Colton A Smith
Sent: Thursday, 22 September 2005 8:00 a.m.
To: pgsql-admin@postgresql.org
Subject: [ADMIN] vacuum message

Hi:

I did a vacuum verbose on my database and at the end of the output I got
the following:

INFO: free space map: 85 relations, 18940 pages stored; 29584 total pages
needed
DETAIL: Allocated FSM size: 1000 relations + 20000 pages = 186 kB shared
memory.
VACUUM

Can somebody tell me what that means?

Thanks!

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On 23.09.2005 08:01, Adrian Engelbrecht wrote:
> You need to increase your max_fsm_pages to at least 29584 pages to
> accommodate / monitor all free pages.

Better set it to much more to have some room for future growth, 50000 maybe.


--
Regards,
Hannes Dorbath

Thats a good Idea.
My output after full vaccum is :-
INFO: free space map: 9 relations, 114736 pages stored; 76592 total pages
needed
DETAIL: Allocated FSM size: 1000 relations + 300000 pages = 1856 kB shared
memory.
VACUUM
I just have a Question:
Is the allocate pages 300000 okey ?. OR do i need to decrease it to 100000 ?
regards
Gouirsh Singbal

On 9/23/05, Hannes Dorbath <light@theendofthetunnel.de> wrote:
>
> On 23.09.2005 08:01, Adrian Engelbrecht wrote:
> > You need to increase your max_fsm_pages to at least 29584 pages to
> > accommodate / monitor all free pages.
>
> Better set it to much more to have some room for future growth, 50000
> maybe.
>
>
> --
> Regards,
> Hannes Dorbath
>
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>



--
Best,
Gourish Singbal

On Mon, Sep 26, 2005 at 07:28:30PM +0530, Gourish Singbal wrote:
> Thats a good Idea.
> My output after full vaccum is :-
> INFO: free space map: 9 relations, 114736 pages stored; 76592 total pages
> needed
> DETAIL: Allocated FSM size: 1000 relations + 300000 pages = 1856 kB shared
> memory.
> VACUUM
> I just have a Question:
> Is the allocate pages 300000 okey ?. OR do i need to decrease it to 100000 ?
> regards

Downside: you're burning extra memory, to the tune of 6 bytes per page.
Downside: there's some additional overhead in maintaining a larger FSM
Upside: you have room to grow, as well as to accommodate occasional
bursts of update activity

Both downsides are pretty minor, I'd say just stick with what you've
got.
--
Jim C. Nasby, Sr. Engineering Consultant jnasby@pervasive.com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461

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That's only 1.8mb of RAM, so I can't see it being a problems if you have no
RAM shortage on your server.

On 9/27/05, Gourish Singbal <gourish@gmail.com> wrote:
>
> Thats a good Idea.
> My output after full vaccum is :-
> INFO: free space map: 9 relations, 114736 pages stored; 76592 total pages
> needed
> DETAIL: Allocated FSM size: 1000 relations + 300000 pages = 1856 kB shared
> memory.
> VACUUM
> I just have a Question:
> Is the allocate pages 300000 okey ?. OR do i need to decrease it to 100000
> ?
> regards
> Gouirsh Singbal
>
> On 9/23/05, Hannes Dorbath <light@theendofthetunnel.de> wrote:
> >
> > On 23.09.2005 08:01, Adrian Engelbrecht wrote:
> > > You need to increase your max_fsm_pages to at least 29584 pages to
> > > accommodate / monitor all free pages.
> >
> > Better set it to much more to have some room for future growth, 50000
> > maybe.
> >
> >
> > --
> > Regards,
> > Hannes Dorbath
> >
> > ---------------------------(end of broadcast)---------------------------
> >
> > TIP 1: if posting/reading through Usenet, please send an appropriate
> > subscribe-nomail command to majordomo@postgresql.org so that your
> > message can get through to the mailing list cleanly
> >
>
>
>
> --
> Best,
> Gourish Singbal