From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 20 Feb 2003 15:15:02 -0800 From: Chris Wedgwood To: Paul Mackerras Cc: "Wells, Charles" , linuxppc-embedded@lists.linuxppc.org Subject: Re: FW: PowerMac vs. Intel for PowerPC Development Host Message-ID: <20030220231502.GA29127@f00f.org> References: <15957.24358.452126.114298@argo.ozlabs.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <15957.24358.452126.114298@argo.ozlabs.ibm.com> Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: On Fri, Feb 21, 2003 at 10:05:10AM +1100, Paul Mackerras wrote: > OK, the hard disk on the G4 is an 80GB Seagate ST380021A, while the > hard disk on the P4 (which is not a laptop) is a 40GB Seagate > ST340016A, so they should be pretty similar. On a `hdparm -tT' > test, the G4 gets 39.75 MB/s from disk whereas the P4 gets 31.98 > MB/s. In any case, after the first compilation, it hardly hits the > disk at all on either machine. I can't see any reasonable machine hitting the disk hard, pretty much any files required during compilation should buffer/page cache. When I compile here, the disk is almost completely inactive except for the odd shirt burst of dirty pages being flushed every 5s or so. --cw ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/