From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
---|---|
To: | "Mr(dot) Dan" <bitsandbytes88(at)hotmail(dot)com> |
Cc: | pgsql-admin(at)postgresql(dot)org |
Subject: | Re: full vacuum - resources - scaling |
Date: | 2006-05-30 14:10:31 |
Message-ID: | 20060530141031.GA30857@surnet.cl |
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Thread: | |
Lists: | pgsql-admin |
Mr. Dan wrote:
> Hi,
>
> I have noticed that my full vacuum and re-index script is taking a day and
> a half instead of 1/2 day.
> Recently, the size of my database cluster has doubled to 130 GB. Would
> anyone recommend increasing one or more of these to help get my full
> vacuums to run a little faster?
I guess the question is why are you running vacuum full at all. Plain
vacuum should suffice, provided the FSM settings are enough for your
database:
> maxfsmpages 480001 (6 bytes each)
> maxfsmrelations 30000 (70 bytes each)
max_fsm_pages at 480000 are enough to cover 3 GB, if my math is correct.
It may be enough or it may not, depending on the dynamics of your data.
Also with non-full vacuum you may be able to get away with vacuuming
some tables more often.
--
Alvaro Herrera http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.
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