Re: Performance Anomalies in 7.4.5

The irony is that I had just disabled pg_autovacuum the previous day
during analysis of a wider issue affecting imports of data into the
system.

-tfo

--
Thomas F. O'Connell
Co-Founder, Information Architect
Sitening, LLC
http://www.sitening.com/
110 30th Avenue North, Suite 6
Nashville, TN 37203-6320
615-260-0005

On Oct 21, 2004, at 4:05 PM, Dennis Bjorklund wrote:

> On Thu, 21 Oct 2004, Thomas F.O'Connell wrote:
>
>>   Aggregate  (cost=0.02..0.02 rows=1 width=8) (actual
>> time=298321.421..298321.422 rows=1 loops=1)
>>     ->  Nested Loop  (cost=0.00..0.01 rows=1 width=8) (actual
>> time=1.771..298305.531 rows=2452 loops=1)
>>           Join Filter: ("inner".id = "outer".id)
>>           ->  Seq Scan on userdata u  (cost=0.00..0.00 rows=1 width=8)
>> (actual time=0.026..11.869 rows=2452 loops=1)
>>           ->  Seq Scan on userdata_history h  (cost=0.00..0.00 rows=1
>> width=8) (actual time=0.005..70.519 rows=41631 loops=2452)
>>                 Filter: (id = 18181::bigint)
>
> It looks like you have not run ANALYZE recently. Most people run VACUUM
> ANALYZE every night (or similar) in a cron job.
>
> --
> /Dennis Björklund