Re: choosing the right platform
Jim C. Nasby <jim@nasby.net>
From: "Jim C. Nasby" <jim@nasby.net>
To: "scott.marlowe" <scott.marlowe@ihs.com>
Cc: Matthew Nuzum <cobalt@bearfruit.org>, Pgsql-Performance <pgsql-performance@postgresql.org>
Date: 2003-04-22T08:30:58Z
Lists: 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 Member: Triangle Fraternity, Sports Car Club of America Give your computer some brain candy! www.distributed.net Team #1828 Windows: "Where do you want to go today?" Linux: "Where do you want to go tomorrow?" FreeBSD: "Are you guys coming, or what?"