Received: from sss.pgh.pa.us (sss.pgh.pa.us [216.151.103.158]) by postgresql.org (8.11.3/8.11.1) with ESMTP id f48K5DA37321 for ; Tue, 8 May 2001 16:05:13 -0400 (EDT) (envelope-from tgl@sss.pgh.pa.us) Received: from sss2.sss.pgh.pa.us (tgl@localhost [127.0.0.1]) by sss.pgh.pa.us (8.11.3/8.11.3) with ESMTP id f48K58R07778; Tue, 8 May 2001 16:05:08 -0400 (EDT) To: Bruce Momjian cc: PostgreSQL-documentation Subject: Re: Default shared memory SGML mention In-reply-to: <200105081801.f48I1ho19055@candle.pha.pa.us> References: <200105081801.f48I1ho19055@candle.pha.pa.us> Comments: In-reply-to Bruce Momjian message dated "Tue, 08 May 2001 14:01:43 -0400" Date: Tue, 08 May 2001 16:05:08 -0400 Message-ID: <7775.989352308@sss.pgh.pa.us> From: Tom Lane X-Archive-Number: 200105/46 X-Sequence-Number: 729 Bruce Momjian 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