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Re: shared_buffers/SHMMAX defaults?

From: Peter Eisentraut <peter_e(at)gmx(dot)net>
To: pgsql-bugs(at)postgresql(dot)org
Cc: Martin Pitt <mpitt(at)debian(dot)org>
Subject: Re: shared_buffers/SHMMAX defaults?
Date: 2009-03-31 14:45:10
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-bugs
On Monday 30 March 2009 17:34:36 Martin Pitt wrote:
> recently, I started to get quite a bunch of bug reports a la
> "PostgreSQL fails to start due to too little shared memory" [1]. I
> have never seen this before, neither in Debian, so I guess the
> SHMMAX defaults changed somewhat in Linux 2.6.27. It seems that with
> other components, such as, using large amounts of shared memory
> as well, startup sometimes works and sometimes doesn't.

I think this calls for a distribution-specific policy.  E.g., why shouldn't X 
be forced to use a "more conservative setting"?  How do we even know how much 
memory X will use today or tomorrow, or whether X is installed or will be 

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Subject: Re: shared_buffers/SHMMAX defaults?
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Subject: Re: BUG #4743: potential bug between int and uint

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