Re: Setting Shared-Buffers
| От | Scott Mead |
|---|---|
| Тема | Re: Setting Shared-Buffers |
| Дата | |
| Msg-id | d3ab2ec80907091705x380d16d1t26f1c3700c618c48@mail.gmail.com обсуждение исходный текст |
| Ответ на | Setting Shared-Buffers (Rafael Domiciano <rafael.domiciano@gmail.com>) |
| Ответы |
Re: Setting Shared-Buffers
|
| Список | pgsql-admin |
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 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
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