From owner-freebsd-hardware Mon Feb 24 22:58:04 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id WAA01910 for hardware-outgoing; Mon, 24 Feb 1997 22:58:04 -0800 (PST) Received: from genesis.atrad.adelaide.edu.au (genesis.atrad.adelaide.edu.au [129.127.96.120]) by freefall.freebsd.org (8.8.5/8.8.5) with ESMTP id WAA01905 for ; Mon, 24 Feb 1997 22:57:58 -0800 (PST) Received: (from msmith@localhost) by genesis.atrad.adelaide.edu.au (8.8.5/8.7.3) id RAA13458; Tue, 25 Feb 1997 17:26:35 +1030 (CST) From: Michael Smith Message-Id: <199702250656.RAA13458@genesis.atrad.adelaide.edu.au> Subject: Re: Memory speed of P6-200 (256k) In-Reply-To: from "Kenneth P. Stox" at "Feb 24, 97 11:44:49 pm" To: ken@stox.pr.mcs.net (Kenneth P. Stox) Date: Tue, 25 Feb 1997 17:26:29 +1030 (CST) Cc: freebsd-hardware@freebsd.org X-Mailer: ELM [version 2.4ME+ PL28 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hardware@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Kenneth P. Stox stands accused of saying: > > Double Hmmm....... My P5STE (512KB Cache, 430HX) with a P5-120 and 64MB > EDO RAM, 3.0 current as of 2/10/97: > > dd if=/dev/zero of=/dev/null bs=1m count=1000 > 1000+0 records in > 1000+0 records out > 1048576000 bytes transferred in 10.875472 secs (96416596 bytes/sec) > > Am I seeing things ? No, that's about right. You will have the i586-optimised copyin/copyout code, which makes the P5 faster (on this particular benchmark) than the P6. This is a P5/166 with 60ns ECC (_not_ EDO) DRAM, 512K cache, 430HX and conservative BIOS settings : bom:~>dd if=/dev/zero of=/dev/null bs=1m count=1000 1000+0 records in 1000+0 records out 1048576000 bytes transferred in 8.186862 secs (128080332 bytes/sec) As Bruce has observed, this makes for very healthy IDE performance, which is what this whole thread started with. > -Ken Stox -- ]] Mike Smith, Software Engineer msmith@gsoft.com.au [[ ]] Genesis Software genesis@gsoft.com.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control. (ph) +61-8-8267-3493 [[ ]] Unix hardware collector. "Where are your PEZ?" The Tick [[