Re: [PERFORM] Request for feedback on hardware for a new database server

2011-03-22 Thread Merlin Moncure
On Thu, Mar 17, 2011 at 7:51 PM, Oliver Charles postgresql-p...@ocharles.org.uk wrote: Hello, At MusicBrainz we're looking to get a new database server, and are hoping to buy this in the next couple of days. I'm mostly a software guy, but I'm posting this on behalf of Rob, who's actually

Re: [PERFORM] Help: massive parallel update to the same table

2011-03-22 Thread Red Maple
Hi, I have found the bug in my code that made the update to the same row in the table instead of two different row. Now I have all cores up and running 100%. Thank you for all your help. On Fri, Mar 18, 2011 at 3:21 PM, Kevin Grittner kevin.gritt...@wicourts.gov wrote: Red Maple

[PERFORM] Analyze on temp table taking very long

2011-03-22 Thread Mahadevan, Mridula
I have a function where in In a cursor loop I 1. create a temp table (on commit drop) 2. insert data into it 3. Run Analyze on the table Select/update outside the loop. This has been running fine for a while on multiple setups, large and small volumes. The setups all have

Re: [PERFORM] Performance on AIX

2011-03-22 Thread Josh Berkus
Phillippe, At Bull company, we want to answer a call for tender from a large company. And we are asked for information about PostgreSQL performance under AIX on Power 7 servers. Afilias runs PostgreSQL on AIX. I don't know the architecture, though. Or what they think of it as a platform.

Re: [PERFORM] Analyze on temp table taking very long

2011-03-22 Thread Tom Lane
Mahadevan, Mridula mridula.mahade...@ironmountain.com writes: This has been running fine for a while on multiple setups, large and small volumes. The setups all have the same hardware configuration. On one particular setup with about 200k records and this analyze runs for 45min and then

[PERFORM] good old VACUUM FULL

2011-03-22 Thread felix
I posted many weeks ago about a severe problem with a table that was obviously bloated and was stunningly slow. Up to 70 seconds just to get a row count on 300k rows. I removed the text column, so it really was just a few columns of fixed data. Still very bloated. Table size was 450M The advice

Re: [PERFORM] good old VACUUM FULL

2011-03-22 Thread Chris
On 23/03/11 11:52, felix wrote: I posted many weeks ago about a severe problem with a table that was obviously bloated and was stunningly slow. Up to 70 seconds just to get a row count on 300k rows. I removed the text column, so it really was just a few columns of fixed data. Still very

Re: [PERFORM] ANTI-JOIN needs table, index scan not possible?

2011-03-22 Thread Robert Haas
On Fri, Mar 11, 2011 at 10:32 AM, hans wulf lo...@gmx.net wrote: I need an ANTI-JOIN (not exists SELECT something from table.../ left join table WHERE table.id IS NULL) on the same table. Acutally I have an index to serve the not exists question, but the query planner chooses to to a bitmap