Re: [PERFORM] Performance Bottleneck

2004-08-07 Thread Martin Foster
Christopher Kings-Lynne wrote: This value of wal_buffers is simply ridiculous. Instead I think is ridiculous a wal_buffers = 8 ( 64KB ) by default. There is no point making WAL buffers higher than 8. I have done much testing of this and it makes not the slightest difference to performance that

Re: [PERFORM] Performance Bottleneck

2004-08-07 Thread Martin Foster
Jan Wieck wrote: On 8/3/2004 2:05 PM, Martin Foster wrote: I run a Perl/CGI driven website that makes extensive use of PostgreSQL (7.4.3) for everything from user information to formatting and display of specific sections of the site. The server itself, is a dual processor AMD Opteron 1.4Ghz w

Re: [PERFORM] Performance Bottleneck

2004-08-07 Thread Jan Wieck
On 8/3/2004 2:05 PM, Martin Foster wrote: I run a Perl/CGI driven website that makes extensive use of PostgreSQL (7.4.3) for everything from user information to formatting and display of specific sections of the site. The server itself, is a dual processor AMD Opteron 1.4Ghz w/ 2GB Ram and 2 x

Re: [PERFORM] Performance Bottleneck

2004-08-07 Thread Christopher Kings-Lynne
This value of wal_buffers is simply ridiculous. Instead I think is ridiculous a wal_buffers = 8 ( 64KB ) by default. There is no point making WAL buffers higher than 8. I have done much testing of this and it makes not the slightest difference to performance that I could measure. Chris ---

Re: [PERFORM] Performance Bottleneck

2004-08-07 Thread Gaetano Mendola
Tom Lane wrote: Martin Foster <[EMAIL PROTECTED]> writes: Gaetano Mendola wrote: change this values in: shared_buffers = 5 sort_mem = 16084 wal_buffers = 1500 This value of wal_buffers is simply ridiculous. Instead I think is ridiculous a wal_buffers = 8 ( 64KB ) by default. There isn't any re

Re: [PERFORM] Performance Bottleneck

2004-08-07 Thread Gaetano Mendola
Scott Marlowe wrote: On Fri, 2004-08-06 at 22:02, Martin Foster wrote: Scott Marlowe wrote: On Fri, 2004-08-06 at 17:24, Gaetano Mendola wrote: Martin Foster wrote: Gaetano Mendola wrote: Let start from your postgres configuration: shared_buffers = 8192< This is really too small for you