Re: Changing the default configuration (was Re: [pgsql-advocacy]

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "scott(dot)marlowe" <scott(dot)marlowe(at)ihs(dot)com>
Cc: PostgresSQL Hackers Mailing List <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Changing the default configuration (was Re: [pgsql-advocacy]
Date: 2003-02-11 18:55:29
Message-ID: 27232.1044989729@sss.pgh.pa.us
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"scott.marlowe" <scott(dot)marlowe(at)ihs(dot)com> writes:
> Is setting the max connections to something like 200 reasonable, or likely
> to cause too many problems?

That would likely run into number-of-semaphores limitations (SEMMNI,
SEMMNS). We do not seem to have as good documentation about changing
that as we do about changing the SHMMAX setting, so I'm not sure I want
to buy into the "it's okay to expect people to fix this before they can
start Postgres the first time" argument here.

Also, max-connections doesn't silently skew your testing: if you need
to raise it, you *will* know it.

regards, tom lane

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