Re: [PERFORM] Multiple index builds on same table - in one sweep?

2011-04-09 Thread Chris Ruprecht
I'm running 2 tests now, one, where I'm doing the traditional indexing, in sequence. The server isn't doing anything else, so I should get pretty accurate results. Test 2 will win all the create index sessions in separate sessions in parallel (echo "create index ..."|psql ... & ) once the 'seria

Re: [PERFORM] Multiple index builds on same table - in one sweep?

2011-04-09 Thread Tom Lane
Chris Ruprecht writes: > I have a table that I need to rebuild indexes on from time to time (records > get loaded before indexes get build). > To build the indexes, I use 'create index ...', which reads the entire table > and builds the index, one at a time. > I'm wondering if there is a way to

[PERFORM] Multiple index builds on same table - in one sweep?

2011-04-09 Thread Chris Ruprecht
I have a table that I need to rebuild indexes on from time to time (records get loaded before indexes get build). To build the indexes, I use 'create index ...', which reads the entire table and builds the index, one at a time. I'm wondering if there is a way to build these indexes in parallel w

Re: [PERFORM] Why it is using/not using index scan?

2011-04-09 Thread Tomas Vondra
Dne 31.3.2011 19:26, Laszlo Nagy napsal(a): > For this query: > > select pp.id,pp.product_id,pp.selling_site_id,pp.asin > from product_price pp > where > (pp.asin is not null and pp.asin<>'') > and (pp.upload_status_id<>1) > and pp.selling_site_id in (8,7,35,6,9) > and (pp.last_od < 'now'::timesta

Re: [PERFORM] Slow query postgres 8.3

2011-04-09 Thread tv
> Hi, > > I am trying to tune a query that is taking too much time on a large > dataset (postgres 8.3). > Hi, run ANALYZE on the tables used in the query - the stats are very off, so the db chooses a really bad execution plan. Tomas -- Sent via pgsql-performance mailing list (pgsql-performance