Horton

Re: MMAP Buffers

Josh Berkus <josh@agliodbs.com>

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From: Joshua Berkus <josh@agliodbs.com>
To: Andrew Dunstan <andrew@dunslane.net>
Cc: Radosław Smogura <rsmogura@softperience.eu>, Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>, PG Hackers <pgsql-hackers@postgresql.org>
Date: 2011-04-15T16:55:04Z
Lists: pgsql-hackers 
Radoslaw,

10% improvement isn't very impressive from a switch to mmap.  What workload did you test with?  What I'd really like to see is testing with databases which are 50%, 90% and 200% the size of RAM ... that's where I'd expect the greatest gain from limiting copying. 

> Netbeans is possibly not very well suited to working on postgres code. 
> AFAIK emacs and/or vi(m) are used by almost all the major developers.

Guys, can we *please* focus on the patch for now, rather than the formatting, which is fixable with sed?
-- 
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com
San Francisco