Re: [PERFORM] very long updates very small tables

2011-03-30 Thread Lars Feistner
Hello Kevin, On 03/29/2011 09:28 PM, Kevin Grittner wrote: Lars Feistnerfeist...@uni-heidelberg.de wrote: The log tells me that certain update statements take sometimes about 3-10 minutes. But we are talking about updates on tables with 1000 to 1 rows and updates that are supposed to

Re: [PERFORM] very long updates very small tables

2011-03-30 Thread pasman pasmaƄski
2011/3/30, Lars Feistner feist...@uni-heidelberg.de: Hello Kevin, On 03/29/2011 09:28 PM, Kevin Grittner wrote: Lars Feistnerfeist...@uni-heidelberg.de wrote: The log tells me that certain update statements take sometimes about 3-10 minutes. But we are talking about updates on tables

Re: [PERFORM] very long updates very small tables

2011-03-30 Thread Kevin Grittner
Lars Feistner feist...@uni-heidelberg.de wrote: On 03/29/2011 09:28 PM, Kevin Grittner wrote: Lars Feistnerfeist...@uni-heidelberg.de wrote: The log tells me that certain update statements take sometimes about 3-10 minutes. But we are talking about updates on tables with 1000 to 1 rows

[PERFORM] COPY with high # of clients, partitioned table locking issues?

2011-03-30 Thread Strange, John W
Just some information on our setup: - HP DL585 G6 - 4 x AMD Opteron 8435 (24 cores) - 256GB RAM - 2 FusionIO 640GB PCI-SSD (RAID0) - dual 10GB ethernet. - we have several tables that we store calculated values in. - these are inserted by a compute farm that calculates the results and stores

Re: [PERFORM] COPY with high # of clients, partitioned table locking issues?

2011-03-30 Thread Bob Lunney
John, Sorry to hear you're struggling with such underpowered hardware. ;-) A little more information would be helpful, though: 1. What version of PG are you running? 2. What are the constraints on the child tables? 3. How many rows does each copy insert? 4. Are these wrapped in

[PERFORM] Slow deleting tables with foreign keys

2011-03-30 Thread Jeremy Palmer
Hi All, I'm trying to delete one row from a table and it's taking an extremely long time. This parent table is referenced by other table's foreign keys, but the particular row I'm trying to delete is not referenced any other rows in the associative tables. This table has the following