From owner-freebsd-hardware Mon Jun 9 21:55:54 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id VAA09552 for hardware-outgoing; Mon, 9 Jun 1997 21:55:54 -0700 (PDT) Received: from mx.serv.net (mx.serv.net [205.153.153.234]) by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id VAA09546 for ; Mon, 9 Jun 1997 21:55:51 -0700 (PDT) Received: from MindBender.serv.net by mx.serv.net (8.7.5/SERV Revision: 2.30) id VAA25019; Mon, 9 Jun 1997 21:55:53 -0700 (PDT) Received: from localhost.HeadCandy.com (michaelv@localhost.HeadCandy.com [127.0.0.1]) by MindBender.serv.net (8.7.5/8.7.3) with SMTP id VAA14910; Mon, 9 Jun 1997 21:53:58 -0700 (PDT) Message-Id: <199706100453.VAA14910@MindBender.serv.net> X-Authentication-Warning: MindBender.serv.net: Host michaelv@localhost.HeadCandy.com [127.0.0.1] didn't use HELO protocol To: Chuck Robey cc: Steve Passe , Tom Samplonius , freebsd-hardware@freebsd.org Subject: Re: fastest possible FreeBSD system? In-reply-to: Your message of Mon, 09 Jun 97 23:53:25 -0400. Date: Mon, 09 Jun 1997 21:53:37 -0700 From: "Michael L. VanLoon -- HeadCandy.com" Sender: owner-hardware@freebsd.org X-Loop: FreeBSD.org Precedence: bulk >> > What about the difference between a PPro with 256k onchip cache, as >> >opposed to 512k onchip cache? >> I haven't seen anything definative on this yet. Since you can't turn off >> the top 256k cache its hard to find otherwise identical setups for a fair te st. >Steve, since the PPro cache is accessed at the clock rate, and the Pentium >II cache is accessed at the bus rate, I would think the PPro would win >hands down, in performance, no? I thought the Pentium II L2 cache ran at half the CPU core rate, not the bus rate (i. e. 116.5MHz for a 233, not 66Mhz). Add to the above that the L2 cache is still non-blocking up to four outstanding transactions, and can fetch out-of-order, you still have advantages in the cache over, say, a Pentium L2 cache. ----------------------------------------------------------------------------- Michael L. VanLoon michaelv@MindBender.serv.net --< Free your mind and your machine -- NetBSD free un*x >-- NetBSD working ports: 386+PC, Mac 68k, Amiga, Atari 68k, HP300, Sun3, Sun4/4c/4m, DEC MIPS, DEC Alpha, PC532, VAX, MVME68k, arm32... NetBSD ports in progress: PICA, others... -----------------------------------------------------------------------------