Обсуждение: 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!
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 [mailto:pgsql-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! ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster
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
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
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
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 ?regardsGouirsh 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