From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: From: presotto@plan9.bell-labs.com To: 9fans@cse.psu.edu Subject: Re: [9fans] how to avoid a memset() optimization MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="upas-yelmshbyzeybyumpzqztgxsvfq" Date: Thu, 14 Nov 2002 13:17:52 -0500 Topicbox-Message-UUID: 20330c90-eacb-11e9-9e20-41e7f4b1d025 This is a multi-part message in MIME format. --upas-yelmshbyzeybyumpzqztgxsvfq Content-Disposition: inline Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit nah, the inability to do a good job of something has never stopped us before. it's just lack of interest. --upas-yelmshbyzeybyumpzqztgxsvfq Content-Type: message/rfc822 Content-Disposition: inline Received: from plan9.cs.bell-labs.com ([135.104.9.2]) by plan9; Thu Nov 14 13:12:19 EST 2002 Received: from mail.cse.psu.edu ([130.203.4.6]) by plan9; Thu Nov 14 13:12:18 EST 2002 Received: from psuvax1.cse.psu.edu (psuvax1.cse.psu.edu [130.203.18.6]) by mail.cse.psu.edu (CSE Mail Server) with ESMTP id 0C816199BB; Thu, 14 Nov 2002 13:12:10 -0500 (EST) Delivered-To: 9fans@cse.psu.edu Received: from magnum.cooper.edu (magnum.cooper.edu [199.98.16.4]) by mail.cse.psu.edu (CSE Mail Server) with SMTP id F26B5199B6 for <9fans@cse.psu.edu>; Thu, 14 Nov 2002 13:11:18 -0500 (EST) Received: from robin.cooper.edu by magnum.cooper.edu with SMTP id AA11057 (5.65c/IDA-1.4.4 for <9fans@cse.psu.edu>); Thu, 14 Nov 2002 13:12:57 -0500 Received: from localhost by robin.cooper.edu (SMI-8.6/SMI-SVR4) id NAA22932; Thu, 14 Nov 2002 13:11:17 -0500 From: Joel Salomon To: 9fans@cse.psu.edu Message-Id: Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Subject: [9fans] how to avoid a memset() optimization Sender: 9fans-admin@cse.psu.edu Errors-To: 9fans-admin@cse.psu.edu X-BeenThere: 9fans@cse.psu.edu X-Mailman-Version: 2.0.11 Precedence: bulk Reply-To: 9fans@cse.psu.edu List-Id: Fans of the OS Plan 9 from Bell Labs <9fans.cse.psu.edu> List-Archive: Date: Thu, 14 Nov 2002 13:11:17 -0500 (EST) > Anyone have any numbers showing that, "without optimizations, > this simply wouldn't be tolerable," in the face of well > written code? I believe this is the case with the IA-64 architecture. I don't have any experience writing compilers, but I would imagine that compile-time concurrency analysis (necessary for *decent* performance on IA-64) requires very clever optimizers. Come to think of it, I don't believe that plan9's comilers have been ported to IA-64 - is this the reason? --Joel ______________________________________________________ Due to economic circumstances, the light at the end of the tunnel has been turned off. --upas-yelmshbyzeybyumpzqztgxsvfq--