Re: shared_buffers > 284263 on OS X - Mailing list pgsql-performance

From Guido Neitzer
Subject Re: shared_buffers > 284263 on OS X
Date
Msg-id 466B950B-8334-418F-83A3-A6AEB959FA4C@event-s.net
Whole thread Raw
In response to Re: shared_buffers > 284263 on OS X  (AgentM <agentm@themactionfaction.com>)
List pgsql-performance
Am 27.11.2006 um 17:05 schrieb AgentM:

> There is a known unfortunate limitation on Darwin for SysV shared
> memory which, incidentally, does not afflict POSIX or mmap'd shared
> memory.

Hmmm. The article from Chris you have linked does not mention the
size of the mem segment you can allocate. Nevertheless - if you
compile a 32 Bit binary, there is the limitation Brian mentioned.

You can easily simulate this with a small C program that allocates
memory - if you compile it as 64 Bit binary - not problem, if you
compile as 32 Bit - crash.

cug

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