From owner-freebsd-hackers Thu May 16 19:15:27 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id TAA28967 for hackers-outgoing; Thu, 16 May 1996 19:15:27 -0700 (PDT) Received: from hq.icb.chel.su (icb-rich-gw.icb.chel.su [193.125.10.34]) by freefall.freebsd.org (8.7.3/8.7.3) with ESMTP id TAA28951; Thu, 16 May 1996 19:15:05 -0700 (PDT) Received: (babkin@localhost) by hq.icb.chel.su (8.7.5/8.6.5) id IAA04026; Fri, 17 May 1996 08:14:17 +0600 (GMT+0600) From: "Serge A. Babkin" Message-Id: <199605170214.IAA04026@hq.icb.chel.su> Subject: Re: EDO & Memory latency To: terry@lambert.org (Terry Lambert) Date: Fri, 17 May 1996 08:14:17 +0600 (ESD) Cc: dyson@FreeBSD.org, hackers@FreeBSD.org In-Reply-To: <199605161715.KAA17388@phaeton.artisoft.com> from "Terry Lambert" at May 16, 96 10:15:24 am X-Mailer: ELM [version 2.4 PL23] Content-Type: text 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-). Nope :-) These 400 were (500-80) rounded to 100. -SB