Vacuum

On Thu, Mar 18, 1999 at 08:41:21AM -0600, Tim Stoddard wrote:

When I delete 2k-3k of records from a table the vacuum process seems
to take forever. I have let the vacuum run for 24 hours before with
not luck.

Can someone one explain to me what is going on?

Funny, there is/was just a whole thread about that on hackers. There seem to
be some agreement that this will be reworked/faster in 6.6, but you cannot
avoid it currently. The main cause for this is the usage of indeces.

Did you pass -o -F to the postmaster? It can improve the speed of PostgreSQL
dramatically.

--

Regards,

Sascha Schumann |
Consultant | finger sas@schell.de
| for PGP public key

-- Start of included mail.

On Thu, Mar 18, 1999 at 08:41:21AM -0600, Tim Stoddard wrote:

When I delete 2k-3k of records from a table the vacuum process seems
to take forever. I have let the vacuum run for 24 hours before with
not luck.

Can someone one explain to me what is going on?

Funny, there is/was just a whole thread about that on hackers. There seem to
be some agreement that this will be reworked/faster in 6.6, but you cannot
avoid it currently. The main cause for this is the usage of indeces.

Did you pass -o -F to the postmaster? It can improve the speed of PostgreSQL
dramatically.

This vacuum speedup may be in 6.5, thanks to Vadim.

-- 
  Bruce Momjian                        |  http://www.op.net/~candle
  maillist@candle.pha.pa.us            |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026

I had same problem...tables that have heavy deletes/inserts start to eat up
tons of disk space and the vacuum seemed to hang. I posted too, but got no
replies...so my solution was to dump the table and delete the database and
recreate it all. Also I run the vaccum more often to avoid the prob in the
future...

-----Original Message-----
From: Tim Stoddard <tims@dcs.state.ar.us>
To: pgsql-general@postgresql.org.pgsql-sql@postgreSQL.org
<pgsql-general@postgresql.org.pgsql-sql@postgreSQL.org>
Date: Thursday, March 18, 1999 2:34 PM
Subject: [GENERAL] Vacuum