From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Wed, 18 Sep 2002 01:17:04 +0200 (CEST) Received: from gateway-1237.mvista.com ([12.44.186.158]:48371 "EHLO orion.mvista.com") by linux-mips.org with ESMTP id ; Wed, 18 Sep 2002 01:17:03 +0200 Received: (from jsun@localhost) by orion.mvista.com (8.11.6/8.11.6) id g8HN4Pj23401; Tue, 17 Sep 2002 16:04:25 -0700 Date: Tue, 17 Sep 2002 16:04:25 -0700 From: Jun Sun To: linux-mips@linux-mips.org Cc: jsun@mvista.com Subject: [jsun@mvista.com: Re: [RFC] FPU context switch] Message-ID: <20020917160425.O17321@mvista.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 221 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: jsun@mvista.com Precedence: bulk X-list: linux-mips Meant to send to the list .... ----- Forwarded message from Jun Sun ----- X-Sieve: cmu-sieve 2.0 Date: Tue, 17 Sep 2002 16:02:26 -0700 From: Jun Sun To: Greg Lindahl Cc: jsun@mvista.com Subject: Re: [RFC] FPU context switch User-Agent: Mutt/1.2.5i In-Reply-To: <20020917155854.B1883@wumpus.attbi.com>; from lindahl@keyresearch.com on Tue, Sep 17, 2002 at 03:58:54PM -0700 On Tue, Sep 17, 2002 at 03:58:54PM -0700, Greg Lindahl wrote: > On Wed, Sep 18, 2002 at 12:30:23AM +0200, Kevin D. Kissell wrote: > > > I'm extremely skeptical about this "evidence". > > The only good test is Linux with and without lazy saves. Throwing in a > new OS complicates matters. It sounds like Jun already has working > code for (1) and (3), so he can do a good test. > I actually have 2) and 3). 1) is easy to do, though. Anyone can recommand some test programs to try? A while back, I tried lmbench which is not very telling. I think the reason is that most of the tests are not using FPU at all. However I might try it again anyway. It might tell the difference between 1) and 2)&3) easily. Jun ----- End forwarded message -----