Re: [PERFORM] work-mem how do I identify the proper size

2007-01-29 Thread Bill Moran
In response to Campbell, Lance [EMAIL PROTECTED]: If I set work-mem at a particular amount of memory how do I answer the following questions: 1) How many of my queries were able to run inside the memory I allocated for work-mem? 2) How many of my queries had to run from disk

[PERFORM] work-mem

2007-01-28 Thread Campbell, Lance
I have been researching how to improve my overall performance of postgres. I am a little confused on the reasoning for how work-mem is used in the postgresql.conf file. The way I understand the documentation is you define with work-mem how much memory you want to allocate per search. Couldn't

Re: [PERFORM] work-mem

2007-01-28 Thread imad
work-mem tells the size of physical memory only, virtual memory is always there off course in case you run out of available memory. I recommend you reading PostgreSQL internals for all this stuff: http://www.postgresql.org/docs/8.0/static/internals.html --Imad www.EnterpriseDB.com On 1/29/07,

[PERFORM] work-mem how do I identify the proper size

2007-01-28 Thread Campbell, Lance
If I set work-mem at a particular amount of memory how do I answer the following questions: 1) How many of my queries were able to run inside the memory I allocated for work-mem? 2) How many of my queries had to run from disk because work-mem was not set high enough? 3) If