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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Bruce Momjian <pgman@candle.pha.pa.us>
Cc: PostgreSQL-documentation <pgsql-docs@postgresql.org>
Subject: Re: Default shared memory SGML mention
Date: Tue, 08 May 2001 16:05:08 -0400
Message-ID: <7775.989352308@sss.pgh.pa.us> (raw)
In-Reply-To: <200105081801.f48I1ho19055@candle.pha.pa.us>
References: <200105081801.f48I1ho19055@candle.pha.pa.us>

Bruce Momjian <pgman@candle.pha.pa.us> writes:
>> A little experimentation shows that the present multiplier for -B is
>> about 8350 bytes and the multiplier for -N about 14580 bytes on my
>> system (HPUX), which extrapolates to a fixed base of about 250K plus
>> the -B and -N contributions.  In reality I believe the computation
>> is somewhat nonlinear, but that's probably close enough for starters.

> I have updated the SGML sources to say for default shared memory values:

> 	250 kB + 8192 * buffers or infinity

How did infinity get into this?  And what happened to the -N
contribution?

			regards, tom lane



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