Re: dynamically allocating chunks from shared memory

Greg Stark <gsstark@mit.edu>

From: Greg Stark <gsstark@mit.edu>

To: Robert Haas <robertmhaas@gmail.com>

Cc: Tom Lane <tgl@sss.pgh.pa.us>, Bruce Momjian <bruce@momjian.us>, Markus Wanner <markus@bluegap.ch>, Alvaro Herrera <alvherre@commandprompt.com>, PostgreSQL-development Hackers <pgsql-hackers@postgresql.org>

Date: 2010-08-10T01:06:38Z

Lists: pgsql-hackers

On Mon, Aug 9, 2010 at 9:44 PM, Robert Haas <robertmhaas@gmail.com> wrote:
> That doesn't seem like a big problem to me.  I was assuming we'd need
> to remap when the size changed.

I had thought about this in the past too, just for supporting run-time
changes to shared_buffers. I always assumed we would just allocate
shared memory in chunks and create separate mappings for each chunk.

-- 
greg