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From: Bruce Momjian <bruce@momjian.us>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Matthew T. O'Connor <matthew@tocr.com>
Cc: Greg Smith <gsmith@gregsmith.com>
Cc: Gregory Stark <stark@enterprisedb.com>
Cc: Kevin Murphy <murphy@genome.chop.edu>
Cc: pgsql-general@postgresql.org
Subject: Re: Drupal and PostgreSQL - performance issues?
Date: Wed, 15 Oct 2008 15:28:59 -0400 (EDT)
Message-ID: <200810151928.m9FJSxq04400@momjian.us> (raw)
In-Reply-To: <24873.1224094510@sss.pgh.pa.us>

Tom Lane wrote:
> "Matthew T. O'Connor" <matthew@tocr.com> writes:
> > Tom Lane wrote:
> >> Mind you, I find the SysV APIs uselessly baroque too, but there is one
> >> feature that we have to have that is not in mmap(): the ability to
> >> detect other processes attached to a shmem block.
> 
> > Didn't we solve this problem on Windows?
> 
> Not terribly well --- see active thread on -hackers.

We could allocate a small shared memory area to solve this and use
mmap() for the other shared memory usage.

-- 
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + If your life is a hard drive, Christ can be your backup. +



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