Re: Postgres Performance Tuning

> max_connections = 700
> shared_buffers = 4096MB
> temp_buffers = 16MB
> work_mem = 64MB
> maintenance_work_mem = 128MB
> wal_buffers = 32MB
> checkpoint_segments = 32
> random_page_cost = 2.0
> effective_cache_size = 4096MB

First of all, there's no reason to increase wal_buffers above 32MB. AFAIK
the largest sensible value is 16MB - I doubt increasing it further will
improve performance.

Second - effective_cache_size is just a hint how much memory is used by
the operating system for filesystem cache. So this does not influence
amount of allocated memory in any way.

> but Still Postgres Server uses Swap Memory While SELECT & INSERT into
> database tables.

Are you sure it's PostgreSQL. What else is running on the box? Have you
analyzed why the SQL queries are slow (using EXPLAIN)?

regards
Tomas