Re: shared_buffers > 284263 on OS X

From: Guido Neitzer <lists(at)event-s(dot)net>
To: AgentM <agentm(at)themactionfaction(dot)com>, pgsql-performance(at)postgresql(dot)org
Subject: Re: shared_buffers > 284263 on OS X
Date: 2006-11-27 16:21:37
Message-ID: 466B950B-8334-418F-83A3-A6AEB959FA4C@event-s.net
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: 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

In response to

Browse pgsql-performance by date

  From Date Subject
Next Message Florian Weimer 2006-11-27 18:11:57 Re: Postgres server crash
Previous Message AgentM 2006-11-27 16:05:12 Re: shared_buffers > 284263 on OS X