Re: Autovacuum is running forever

["Sachchida Ojha" <sojha(at)secure-elements(dot)com>]

Thanks to all of you. I have changed the settings and reloaded the
config. Let me run this system overnight. I will update this forum if
new settings works for me. I am also asking management to upgrade the
hardware.

Thanks a lot.


Regards
Sachchida


-----Original Message-----
From: Scott Marlowe [mailto:scott(dot)marlowe(at)gmail(dot)com] 
Sent: Tuesday, August 21, 2007 6:05 PM
To: Sachchida Ojha
Cc: Michael Glaesemann; pgsql-performance(at)postgresql(dot)org
Subject: Re: [PERFORM] Autovacuum is running forever

On 8/21/07, Sachchida Ojha <sojha(at)secure-elements(dot)com> wrote:
> Is there any data corruption/damage to the database if we forcefully 
> kill autovacuum using cron job (if it is running longer than a 
> predefined time frame).

Oh, and I'd look at your I/O subsystem.  You might want to look at
putting $300 hardware RAID cards with battery backed cache and 4 or so
disks in a RAID10 in them.  It sounds to me like you could use more I/O
for your vacuuming.  Vacuuming isn't CPU intensive, but it can be I/O
intensive.