It's a slony slave db, for reporting.
So, what's a good value to set to effective_cache_size with 10 Gb RAM?
On Thu, Jul 9, 2009 at 9:05 PM, Scott Mead <scott.lists@xxxxxxxxxxxxxxxx> wrote:
On Thu, Jul 9, 2009 at 6:18 PM, Rafael Domiciano <rafael.domiciano@xxxxxxxxx> wrote:
Hello People,Today, I've upgraded a dedicated postgres server, from 2 Gb to 10 Gb. Everything gone well.But, I would like shared buffers to use at least 5 Gb of the total memory.What's your workload? Is this db primarily for reporting or OLTP?If you have an OLTP style workload, I wouldn't recommend going much over 2.5 - 4 GB (depending on your specific workload). Just set your 'effective_cache_size' higher. This tells postgres how much memory that the OS has for caching and the database will perform better.Linux Fedora Core 9postgres=# select version();version---------------------------------------------------------------------------------------------------PostgreSQL 8.3.5 on i686-pc-linux-gnu, compiled by GCC gcc (GCC) 4.3.0 20080428 (Red Hat 4.3.0-8)(1 row)32 bit pg can't address that much memory. You'd need to recompile or download the 64 bit packages. I believe you'd need to dump / reload as well, but I may be off about that one.--Scott
