On Thu, Jul 9, 2009 at 6:18 PM, Rafael Domiciano
<rafael.domiciano@gmail.com> 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 9
postgres=# 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