From owner-freebsd-alpha Wed Apr 17 11: 8:13 2002 Delivered-To: freebsd-alpha@freebsd.org Received: from duke.cs.duke.edu (duke.cs.duke.edu [152.3.140.1]) by hub.freebsd.org (Postfix) with ESMTP id 43AA137B405; Wed, 17 Apr 2002 11:08:06 -0700 (PDT) Received: from grasshopper.cs.duke.edu (grasshopper.cs.duke.edu [152.3.145.30]) by duke.cs.duke.edu (8.9.3/8.9.3) with ESMTP id OAA29001; Wed, 17 Apr 2002 14:07:57 -0400 (EDT) Received: (from gallatin@localhost) by grasshopper.cs.duke.edu (8.11.6/8.9.1) id g3HI7RV87134; Wed, 17 Apr 2002 14:07:27 -0400 (EDT) (envelope-from gallatin@cs.duke.edu) From: Andrew Gallatin MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <15549.47583.432868.403987@grasshopper.cs.duke.edu> Date: Wed, 17 Apr 2002 14:07:27 -0400 (EDT) To: John Baldwin Cc: Bernd Walter , freebsd-alpha@FreeBSD.ORG Subject: RE: 21066A tester for cpu_idle needed In-Reply-To: References: <20020417170256.GC70839@cicely9.cicely.de> X-Mailer: VM 6.75 under 21.1 (patch 12) "Channel Islands" XEmacs Lucid Sender: owner-freebsd-alpha@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org John Baldwin writes: > > On 17-Apr-2002 Bernd Walter wrote: > > The patch is available under: > > http://www.cosmo-project.de/~bernd/lca_cpu_idle.diff > > > > It implements usage of the power management capabilities of 21066A and > > 21068A CPUs. > > As my LCA system is an 21066 I can't test it myself. > > We should also look into possibly using call_pal wfi when we are idle perhaps. I tried this last summer on my UP1000, but the electric meter looked like it was spinning just as fast as always.. If anybody has a good way of really measuring power consumption, this would be a good thing to test. Drew To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message