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From: Command Prompt, Inc. <pgsql-general@commandprompt.com>
To: pgsql-general@postgresql.org
Cc: jlx@commandprompt.com
Subject: MacOS X Shared Buffers (SHMMAX)?
Date: Mon, 20 May 2002 19:25:11 -0700 (PDT)
Message-ID: <Pine.LNX.4.30.0205201919440.902-100000@commandprompt.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0205080903080.11632-100000@bluebell.marzen.de>

Good day,

Does anyone have any experience in increasing the amount of shared memory
buffers available to Mac OS X/Darwin? When starting with more than 128
backend connections on a test G3 I encounter:

-----------------------------------------------------------------------------------
IpcMemoryCreate: shmget(key=5432001, size=33357824, 03600) failed: Invalid argument

This error usually means that PostgreSQL's request for a shared memory
segment exceeded your kernel's SHMMAX parameter.  You can either
reduce the request size or reconfigure the kernel with larger SHMMAX.
-----------------------------------------------------------------------------------

However, I can find no helpful information looking around for how Darwin
handles this configuration. Hopefully it does not require a recompile of
the Kernel. ;)

Any knowledge on this topic would be greatly appreciated.

Best Regards,
Jw.
--
jlx@commandprompt.com
by way of pgsql-general@commandprompt.com
http://www.postgresql.info/
http://www.commandprompt.com/




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