Re: Buffer Management

Curt Sampson <cjs@cynic.net>

From: Curt Sampson <cjs@cynic.net>
To: "J. R. Nield" <jrnield@usol.com>
Cc: Bruce Momjian <pgman@candle.pha.pa.us>, Tom Lane <tgl@sss.pgh.pa.us>, PostgreSQL Hacker <pgsql-hackers@postgresql.org>
Date: 2002-06-25T13:52:14Z
Lists: pgsql-hackers
So, while we're at it, what's the current state of people's thinking
on using mmap rather than shared memory for data file buffers? I
see some pretty powerful advantages to this approach, and I'm not
(yet :-)) convinced that the disadvantages are as bad as people think.
I think I can address most of the concerns in doc/TODO.detail/mmap.

Is this worth pursuing a bit? (I.e., should I spend an hour or two
writing up the advantages and thoughts on how to get around the
problems?) Anybody got objections that aren't in doc/TODO.detail/mmap?

cjs
-- 
Curt Sampson  <cjs@cynic.net>   +81 90 7737 2974   http://www.netbsd.org
    Don't you know, in this new Dark Age, we're all light.  --XTC