Re: [ADMIN] Autovacuum daemon functionality questions

2010-04-09 Thread Alvaro Herrera
Gnanakumar wrote: > >There are two separate counters for live and dead tuples, IIRC (though > >they may not be exposed in the pg_stat views) > > I've a stop/start of PostgreSQL service on a daily basis. Since these 2 > counters are not stored/saved in tables and not available in pg_stat views >

Re: [ADMIN] Autovacuum daemon functionality questions

2010-04-09 Thread Gnanakumar
>> 1. Why need to have 2 parameters (base threshold and scale factor) to define >> the threshold value, when either one of the parameter is more than enough to >> define the threshold value. Can you explain the significance of having both >> parameters. What is the real-time advantage of this? >

Re: [ADMIN] Autovacuum daemon functionality questions

2010-04-08 Thread Alvaro Herrera
Gnanakumar wrote: > 1. Why need to have 2 parameters (base threshold and scale factor) to define > the threshold value, when either one of the parameter is more than enough to > define the threshold value. Can you explain the significance of having both > parameters. What is the real-time advant

[ADMIN] Autovacuum daemon functionality questions

2010-04-08 Thread Gnanakumar
Hi, I'm using PostgreSQL 8.2. I want to configure autovacuum daemon process in our production server in an efficient way and take advantage of this daemon to perform vacuum and analyze more aggressively. I also read about autovacuum daemon at http://www.postgresql.org/docs/8.2/interactive/routi