Re: Default shared memory SGML mention

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
Cc: PostgreSQL-documentation <pgsql-docs(at)postgresql(dot)org>
Subject: Re: Default shared memory SGML mention
Date: 2001-05-08 20:05:08
Message-ID: 7775.989352308@sss.pgh.pa.us
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Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)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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