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Re: A patch for xlog.c

From: Matthew Kirkwood <matthew(at)hairy(dot)beasts(dot)org>
To: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
Cc: pgsql-patches(at)postgresql(dot)org
Subject: Re: A patch for xlog.c
Date: 2001-02-27 17:17:24
Message-ID: Pine.LNX.4.10.10102271708350.713-100000@sphinx.mythic-beasts.com (view raw or flat)
Thread:
Lists: pgsql-hackerspgsql-patches
On Tue, 27 Feb 2001, Bruce Momjian wrote:

> mmap() usage is only useful in enabling larger
> buffers without kernel changes.

My plan was not to replace the shared buffer pool with an
mmap()ed area, but rather to use mmap() on the data files
themselves to eliminate it.

Clearly this is rather controversial, since it may have
safety implications, but it should allow the kernel better
to choose what to cache.

Matthew.


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