From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from smtp-roam.Stanford.EDU ([171.64.10.152]:33257 "EHLO smtp-roam.Stanford.EDU" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753009AbYD2WDr (ORCPT ); Tue, 29 Apr 2008 18:03:47 -0400 Received: from localhost (SW-90-728-259-1.Stanford.EDU [171.66.159.123]) (authenticated bits=0) by smtp-roam.Stanford.EDU (8.12.11/8.12.11) with ESMTP id m3TLuV6e005429 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Tue, 29 Apr 2008 14:56:35 -0700 Date: Tue, 29 Apr 2008 14:56:29 -0700 From: Gautam Iyer To: linux-wireless@vger.kernel.org Subject: b43 reduced performance in Linux-2.6.25 Message-ID: <20080429215629.GC17790@stanford.edu> (sfid-20080430_000347_699395_B4333FD1) MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="/04w6evG8XlLl3ft" Sender: linux-wireless-owner@vger.kernel.org List-ID: --/04w6evG8XlLl3ft Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi All, I saw a few threads about reduced performance in b43 in the 2.6.24 / 2.6.25_rcXX kernels, but couldn't manage to fix the problem myself: On my system, using ndiswrapper and the windows drivers gives me about 1.5 times the performance of the in kernel b43 drivers. Here are my system specs: Broadcom Corporation BCM4312 802.11a/b/g [14e4:4312] (rev 02) Linux 2.6.25 (gentoo-sources-2.6.25-r1). b43 wireless driver with firmware 410.2160 (2007-05-26 15:32:10) I measured the performance by running "ttcp" between my Laptop and my router. Using b43 on my Laptop gives about 2MB/s reported, and using ndiswrapper gives me about 3MB/s under exactly the same situations. Any ideas about what's going on? (I would be happy to provide you with any further specs on my computer). Thanks, GI --=20 100 THINGS I'D DO IF I EVER BECAME AN EVIL OVERLORD 82. I will not shoot at any of my enemies if they are standing in front of the crucial support beam to a heavy, dangerous, unbalanced structure. --/04w6evG8XlLl3ft Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (GNU/Linux) iEYEARECAAYFAkgXmYwACgkQ6plSLtsExHFvRACeIa1ssQf5xfxRfbpRjr8n386/ 2LcAn3ekFtTQyY3oArNmioUJur1tYYFZ =VBVR -----END PGP SIGNATURE----- --/04w6evG8XlLl3ft--