Received: from candle.pha.pa.us (candle.navpoint.com [162.33.245.46]) by postgresql.org (8.11.3/8.11.1) with ESMTP id f48KNmA43395 for ; Tue, 8 May 2001 16:23:48 -0400 (EDT) (envelope-from pgman@candle.pha.pa.us) Received: (from pgman@localhost) by candle.pha.pa.us (8.10.1/8.10.1) id f48KNMm28570; Tue, 8 May 2001 16:23:22 -0400 (EDT) From: Bruce Momjian Message-Id: <200105082023.f48KNMm28570@candle.pha.pa.us> Subject: Re: Default shared memory SGML mention In-Reply-To: <7901.989353074@sss.pgh.pa.us> "from Tom Lane at May 8, 2001 04:17:54 pm" To: Tom Lane Date: Tue, 8 May 2001 16:23:22 -0400 (EDT) CC: PostgreSQL-documentation X-Mailer: ELM [version 2.4ME+ PL90 (25)] MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII X-Archive-Number: 200105/48 X-Sequence-Number: 731 > Bruce Momjian writes: > > far as -N, buffers is always 2*N, right, so I figured it was in there > > already. > > No, it isn't, and buffers is NOT always 2*N. Yes, but shared memory limits are based on buffers, not connections, right? The per-connection overhead is pretty small, no? If it is buffers and connections, how much is connections and how much buffers. I know buffers is 8k. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 853-3000 + If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania 19026