Re: choosing the right platform - Mailing list pgsql-performance

From Jim C. Nasby
Subject Re: choosing the right platform
Date
Msg-id 20030422033058.B37876@flake.decibel.org
Whole thread Raw
In response to Re: choosing the right platform  ("scott.marlowe" <scott.marlowe@ihs.com>)
List pgsql-performance
On Thu, Apr 10, 2003 at 10:42:35AM -0600, scott.marlowe wrote:
> The difference between SIZE and SHARE is the delta, which is only
> something like 3 or 4 megs for the initial select * from logs, but the
> second one is only 1 meg.  On average, the actual increase in memory usage
> for postgresql isn't that great, usually about 1 meg.
>
> Running out of memory isn't really a problem with connections<=200 and 1
> gig of ram, as long as sort_mem isn't too high.  I/O contention is the
> killer at that point, as is CPU load.

Except you should consider what you could be doing with that 200M, ie:
caching data. Even something as small as 1M per connection starts to add
up.
--
Jim C. Nasby (aka Decibel!)                    jim@nasby.net
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