From owner-freebsd-hackers Thu May 16 10:18:53 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id KAA18036 for hackers-outgoing; Thu, 16 May 1996 10:18:53 -0700 (PDT) Received: from phaeton.artisoft.com (phaeton.Artisoft.COM [198.17.250.211]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id KAA18031; Thu, 16 May 1996 10:18:46 -0700 (PDT) Received: (from terry@localhost) by phaeton.artisoft.com (8.6.11/8.6.9) id KAA17388; Thu, 16 May 1996 10:15:24 -0700 From: Terry Lambert Message-Id: <199605161715.KAA17388@phaeton.artisoft.com> Subject: Re: EDO & Memory latency To: babkin@hq.icb.chel.su (Serge A. Babkin) Date: Thu, 16 May 1996 10:15:24 -0700 (MST) Cc: dyson@FreeBSD.org, hackers@FreeBSD.org In-Reply-To: <199605160907.PAA10321@hq.icb.chel.su> from "Serge A. Babkin" at May 16, 96 03:07:44 pm X-Mailer: ELM [version 2.4 PL24] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hackers@FreeBSD.org X-Loop: FreeBSD.org Precedence: bulk > The processor's internal conveyer size is at most 5 (?) > steps, for 13ns cycle this give 65ns for the maximal processor overhead. > The memory refresh can add about 15% of overhead, 60ns*0.15=9ns. In sum we > get 80+40+65+9=~=295ns. But the remaining 200ns are a real mystery for me. Yeah, that's my ~280 number. (ugh. I just relaized I labelled the units in my last post as uS). 400 - 295 = 105, so there's about half of your mystery for you. 8-). Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.