From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 4 Sep 2001 11:13:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 4 Sep 2001 11:13:34 -0400 Received: from draal.physics.wisc.edu ([128.104.137.82]:11651 "EHLO draal.physics.wisc.edu") by vger.kernel.org with ESMTP id ; Tue, 4 Sep 2001 11:13:25 -0400 Date: Tue, 4 Sep 2001 10:13:18 -0500 From: Bob McElrath To: "linux-kernel@vger.kernel.org" Subject: Wrong BogoMIPS on alpha Message-ID: <20010904101318.B1458@draal.physics.wisc.edu> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="pvezYHf7grwyp3Bc" Content-Disposition: inline User-Agent: Mutt/1.2i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --pvezYHf7grwyp3Bc Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Recently the bogomips measurement has gone all haywire. Every once in a while when I boot up the bogomips measurement will be absurly high (i.e. 5 Terahertz), with obvious associated problems. This happens in recent kernels with both gcc-2.96-81 (redhat) and egcs-2.91.66. It does not happen with early 2.4 kernels or 2.2 kernels. It does not happen all the time. It never happens from a cold boot, and (almost) always happens in a warm reboot. In particular, MILO (which is a stripped-down linux 2.0 kernel that loads the real kernel) always measures the bogomips correctly immediately before loading a new kernel that measures it incorrectly. The system is: Alpha LX164 (21164 chip) at 600MHz Kernels 2.4.7-2.4.9. Cheers, -- Bob Bob McElrath (rsmcelrath@students.wisc.edu)=20 Univ. of Wisconsin at Madison, Department of Physics --pvezYHf7grwyp3Bc Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.1 (GNU/Linux) Comment: For info see http://www.gnupg.org iEYEARECAAYFAjuU744ACgkQjwioWRGe9K2wzgCfa0S/hH67KBfT4HrBoa1w25Lz NoMAnRj7n6+fcFxjWEzLNz8aZpp02hPT =WuqW -----END PGP SIGNATURE----- --pvezYHf7grwyp3Bc--