Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!unix.cis.pitt.edu!dsinc!bagate!cbmvax!jesup From: jesup@cbmvax.commodore.com (Randell Jesup) Newsgroups: comp.sys.amiga.hardware Subject: Re: Slow GVP '030 accelerator board Message-ID: <16003@cbmvax.commodore.com> Date: 21 Nov 90 09:22:41 GMT References: <5765@crash.cts.com> Reply-To: jesup@cbmvax.commodore.com (Randell Jesup) Organization: Commodore, West Chester, PA Lines: 17 In article <5765@crash.cts.com> lkoop@pnet01.cts.com (Lamonte Koop) writes: >accesses are quite time consuming. However, the figure of '20%' over a stock >2000 with a standard 68000 I cannot agree on as being correct in any sense. >To illustrate, I turned off the 32-bit RAM (well...didn't configure it, so for >all intensive puposes it's off) on my 25MHz 030 based system here. My >performance figures show the system at 2.1x (or 210%) of a normal 68000-based >Amiga....equivalently a 110% increase, not 20%. [This is with the Data cache Remember that most performance testers tend to be small loops of code, which are handled very nicely by a 256-byte I-cache. This causes them to overstate the application-level performance of a system. -- Randell Jesup, Keeper of AmigaDos, Commodore Engineering. {uunet|rutgers}!cbmvax!jesup, jesup@cbmvax.commodore.com BIX: rjesup Thus spake the Master Ninjei: "If your application does not run correctly, do not blame the operating system." (From "The Zen of Programming") ;-)