Strong slowdown on huge tables

От: Job
Тема: Strong slowdown on huge tables
Дата: ,
Msg-id: 88EF58F000EC4B4684700C2AA3A73D7AA8B1042B83@W2008DC01.ColliniConsulting.lan
(см: обсуждение, исходный текст)
Ответы: Re: Strong slowdown on huge tables  (Tom Lane)
Список: pgsql-performance

Hello,
 
i use PostgreSQL 8.4.8 on Centos 5.x and i have some table where i load with pg_bulkload webtraffic logs, every day.
After loading new data, i delete with a query 30-days older logs.
Autovacuum is on.
 
In some systems, i experience a very huge slowdown of this table in queries, expecially update and delete; the database size grows up a lots.
I tried to rebuild indexes and make a manual vacuum; database size reduces, but slowdown problems remains.
 
Are there particular things to know after using pg_bulkload?
In this case, is preferred to set autovacuum off and launch one time a week, as example, the autovacuum full manually?

Thank you!
Francesco

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