[PERFORM] Optimizing AGE()

2008-06-06 Thread Volkan YAZICI
Hi, Am I wrong or AGE() always gets directed to a sequential scan? # BEGIN; ] SET enable_seqscan TO off; ] EXPLAIN ANALYZE ] SELECT count(1) ] FROM incomingmessageslog ] WHERE AGE(time) < '1 year'; ] ROLLBACK; BEGIN SET

Re: [PERFORM] PgPool parallel query performance rules of thumb

2008-06-06 Thread Mason Sharp
Hi John, It has been a while since I played around with PgPool-II. In the tests that I did, it did help with load balancing. For parallel query, it helped for simple queries, such as when querying a single table. If that is your typical use case, you may benefit. For other queries, it was not as e

Re: [PERFORM] Checkpoint tuning on 8.2.4

2008-06-06 Thread Scott Marlowe
On Fri, Jun 6, 2008 at 12:30 AM, Greg Smith <[EMAIL PROTECTED]> wrote: > vacuum_cost_delay = 750 > autovacuum = true > autovacuum_naptime = 3600 > autovacuum_vacuum_threshold = 1000 > autovacuum_analyze_threshold = 500 > autovacuum_vacuum_scale_factor = 0.4 > autovacuum_analyze_scale_factor = 0.2