Re: [PERFORM] pg9.0.3 explain analyze running very slow compared to a different box with much less configuration

2011-03-25 Thread Strange, John W
analyze running very slow compared to a different box with much less configuration 2011/3/25 DM dm.a...@gmail.com: gettimeofday() on my new box is slow, after further research we found that, when we set ACPI=Off, we got a good clock performance even the explain analyze gave approximately gave

Re: [PERFORM] pg9.0.3 explain analyze running very slow compared to a different box with much less configuration

2011-03-24 Thread Achilleas Mantzios
You might take a look here: http://archives.postgresql.org/pgsql-admin/2011-01/msg00050.php My problem had to do with the speed of gettimeofday. You might want to do some special setting regarding your box's way of reading time for the hw clock. Στις Thursday 24 March 2011 04:04:21 ο/η DM

Re: [PERFORM] pg9.0.3 explain analyze running very slow compared to a different box with much less configuration

2011-03-24 Thread Marti Raudsepp
On Thu, Mar 24, 2011 at 11:11, Achilleas Mantzios ach...@matrix.gatewaynet.com wrote: My problem had to do with the speed of gettimeofday. You might want to do some special setting regarding your box's way of reading time for the hw clock. Just for extra info, on x86, TSC is usually the fast

Re: [PERFORM] pg9.0.3 explain analyze running very slow compared to a different box with much less configuration

2011-03-24 Thread Achilleas Mantzios
Στις Thursday 24 March 2011 13:39:19 ο/η Marti Raudsepp έγραψε: On Thu, Mar 24, 2011 at 11:11, Achilleas Mantzios ach...@matrix.gatewaynet.com wrote: My problem had to do with the speed of gettimeofday. You might want to do some special setting regarding your box's way of reading time for

Re: [PERFORM] pg9.0.3 explain analyze running very slow compared to a different box with much less configuration

2011-03-24 Thread DM
Thank you for your research on and posting on it, when I first encountered this issue I saw your posting/research on this issue, this gave me a great insight. gettimeofday() on my new box is slow, after further research we found that, when we set ACPI=Off, we got a good clock performance even the

[PERFORM] pg9.0.3 explain analyze running very slow compared to a different box with much less configuration

2011-03-23 Thread DM
Hi All, pg9.0.3 explain analyze running very slow compared to old box with much less configuration. But actual query is performing much better than the old server. old Server=== OS: CentOS release 5.4 (Final) Linux Server 2.6.18-164.6.1.el5 #1 SMP Tue Nov 3 16:12:36 EST