[PERFORM] SSD options, small database, ZFS

2011-10-14 Thread CSS
Hello all, I've spent some time looking through previous posts regarding postgres and SSD drives and have also been reading up on the subject of SSDs in general elsewhere. Some quick background: We're currently looking at changing our basic database setup as we migrate away from some rather old

Re: [PERFORM] Join over two tables of 50K records takes 2 hours

2011-10-14 Thread Scott Marlowe
On Fri, Oct 14, 2011 at 2:35 AM, Svetlin Manavski svetlin.manav...@gmail.com wrote: Thank you guys for spotting the problem immediately. The reason for such autovacuum thresholds is that these tables are designed for very high rate of inserts and I have a specific routine to analyze them in a

Re: [PERFORM] Join over two tables of 50K records takes 2 hours

2011-10-14 Thread Svetlin Manavski
Thank you guys for spotting the problem immediately. The reason for such autovacuum thresholds is that these tables are designed for very high rate of inserts and I have a specific routine to analyze them in a more controlled way. Infact the stats target of some of the fields is also high. However

Re: [PERFORM] SSD options, small database, ZFS

2011-10-14 Thread Arjen van der Meijden
On 14-10-2011 10:23, CSS wrote: -I'm calling our combined databases at 133GB small, fair assumption? -Is there any chance that a server with dual quad core xeons, 32GB RAM, and 2 or 4 SSDs (assume mirrored) could be slower than the 4 old servers described above? I'm beating those on raw cpu,

Re: [PERFORM] Tablespace files deleted automatically.

2011-10-14 Thread Josh Berkus
Vishnu, I am using PostgreSQL 8.4 in windows. I have created a database and some tables on it. Also created a table space and some tables in it. My application inserts data into these tables in every second. The application is a continuous running application. My issue is that after a