Re: vacuuming

On Tue, Aug 08, 2006 at 10:39:56AM +0300, Eugeny N Dzhurinsky wrote:
> Hello
>
> I have pg_autovacuum running with the arguments:
>
> pg_autovacuum -D -s 120 -v 10000

It's been a while since I looked at the pg_autovac settings, but I know
that it's threasholds were way, way to high. They were set to something
like 2, when 0.2 is a better idea.

> the database is postgresql 8.0.0
>
> Sometimes load average on server raises to 20 and it is almost impossible to
> login via SSH
>
> When I'm logging in finally, I see there is cpu usage: 6% and iowait 95%
>
> ps ax | grep post gives me
>
> postgres: postgres db [local] VACUUM
>
> Is there some solution to avoid such cases?

Have you turned on vacuum_cost_delay?
--
Jim C. Nasby, Sr. Engineering Consultant jnasby(at)pervasive(dot)com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461