[PERFORM] how to estimate shared_buffers...

2008-07-12 Thread Jessica Richard
On a running production machine, we have 900M configured on a 16G-memory Linux host. The db size for all dbs combined is about 50G. There are many transactions going on all the times (deletes, inserts, updates). We do not have a testing environment that has the same setup and the same amount

[PERFORM] best starting point...

2008-07-12 Thread Jessica Richard
On a new system with 64G memory, what is the best starting points for shmmax on OS and shared_buffers for Postgres. All databases combined are about 50G. I want to evaluate this with the two following scenarios: 1. this machine is running only Postgres, no other applications 2. this machine

Re: [PERFORM] how to estimate shared_buffers...

2008-07-12 Thread Scott Marlowe
On Sat, Jul 12, 2008 at 5:30 AM, Jessica Richard [EMAIL PROTECTED] wrote: On a running production machine, we have 900M configured on a 16G-memory Linux host. The db size for all dbs combined is about 50G. There are many transactions going on all the times (deletes, inserts, updates). We do

Re: [PERFORM] how to estimate shared_buffers...

2008-07-12 Thread Oleg Bartunov
On Sat, 12 Jul 2008, Jessica Richard wrote: On a running production machine, we have 900M configured on a 16G-memory Linux host. The db size for all dbs combined is about 50G. There are many transactions going on all the times (deletes, inserts, updates). We do not have a testing environment