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: Wed, 02 May 2001 18:08:45 -0400
Message-ID: <17050.988841325@sss.pgh.pa.us> (raw)
In-Reply-To: <200105021617.f42GHX811076@candle.pha.pa.us>
References: <200105021617.f42GHX811076@candle.pha.pa.us>
Bruce Momjian <pgman@candle.pha.pa.us> writes:
> so by my computations, we need about 700k added to the shared buffer
> cache area. The documentation says to add 512k, not 700k.
This would depend on your -N setting.
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.
regards, tom lane
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To: pgsql-docs@postgresql.org
Cc: tgl@sss.pgh.pa.us, pgman@candle.pha.pa.us
Subject: Re: Default shared memory SGML mention
In-Reply-To: <17050.988841325@sss.pgh.pa.us>
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