Re: optimalization

croolyc <croolists(at)gmail(dot)com> wrote:

> Hi!
> can you help me with performance optimization
> on my machine I have 8 databases with ca. 1-2GB

Performace optimization depends on the workload...
Is that a dedicated server, only for PostgreSQL? I assume it.

> memory: 8GB (4*2GB ecc ram)

Okay, as a first try, set shared_buffers to 2 GByte, and increase
work_mem up to, maybe, 20 MByte.

You can (and should) set log_min_duration_statement, maybe to 1000
(1000ms), and observe the log. Read our docu about EXPLAIN, and analyse
long-running queries with EXPLAIN (ANALYSE).

And again, performance tuning depends on the real workload on the
server, it's hard to give you a recipe for all use-cases.

Andreas
--
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