Re: Sun vs. Mac - best Postgres platform?

On Tue, Jan 14, 2003 at 10:10:54AM -0800, CaptainX0r wrote:
> > could you post your $PGDATA/postgresql.conf for our viewing
> > pleasure ?
>
> max_connections = 64
> shared_buffers = 65536 # 1/2 total RAM /8K
> sort_mem = 100000 # min 64, size in KB
^^^^^^
There's your problem. Don't set that anywhere near that high.
If you run 2 queries that require sorting, _each sort_ can use up to
100000 K. Which can chew up all your memory pretty fast.

> effective_cache_size = 65536 # typically 8KB each

What basis did you have to change this? Have you done work figuring
out how big the kernel's disk cache is regularly on that system?

> Hannu brings up a good point - one that was debated before my
> attempts at making Solaris faster. If you were going to make a
> fast postgres server what would you use? Assuming you could
> afford a SunFire 280R (~$8k?), would that money be better spent
> on a (say) Dell server running (say) linux? We're doing light

I've been finding FreeBSD way faster than Linux. But yes.

A
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