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Data Bases > Pgsql General > auto-vacuum que...
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auto-vacuum questions

by gateley@[EMAIL PROTECTED] (John Gateley) May 8, 2008 at 09:43 AM

Hi, I have a couple of questions on the auto-vacuum daemon:

1) How do I know it is running. I suspect it has not been, and
I carefully checked the do***entation and found a variable that
wasn't set (stats_row_level defaults to off in 8.1, should be
"on"). So I changed that and restarted, but how do I *know* that
is or isn't vacuuming?

2) Every night I do 

pg_dump -c mydb | psql -d mydbtest

so I create a copy of the database in a different name for testing
purposes. But the new database, mydbtest, always has slow queries.
I run an analyze and they speed up. There are NO transactions in
mydbtest until I come in and start testing, does this mean
auto-vacuum won't analyze it? Is this maybe related to question
1 where I think auto-vacuum actually wasn't running?

Thanks,

j

-- 
John Gateley <gateley@[EMAIL PROTECTED]
>

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 6 Posts in Topic:
auto-vacuum questions
gateley@[EMAIL PROTECTED]  2008-05-08 09:43:02 
Re: auto-vacuum questions
alvherre@[EMAIL PROTECTED  2008-05-08 10:54:32 
Re: auto-vacuum questions
gateley@[EMAIL PROTECTED]  2008-05-08 10:04:20 
Re: auto-vacuum questions
ahodgson@[EMAIL PROTECTED  2008-05-08 10:58:47 
Re: auto-vacuum questions
gateley@[EMAIL PROTECTED]  2008-05-08 13:10:12 
Re: auto-vacuum questions
scott.marlowe@[EMAIL PROT  2008-05-09 01:17:23 

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tan13V112 Sun Jul 20 4:26:50 CDT 2008.