Return-path: Received: from mail-iw0-f178.google.com ([209.85.223.178]:49272 "EHLO mail-iw0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751090AbZKKFPo (ORCPT ); Wed, 11 Nov 2009 00:15:44 -0500 Received: by iwn8 with SMTP id 8so683182iwn.33 for ; Tue, 10 Nov 2009 21:15:50 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <43e72e890911102015t3b429a61s353845c8b1d63@mail.gmail.com> References: <43e72e890911101640r69ad67c6l2e48250596c19d44@mail.gmail.com> <19194.14704.375018.158963@gargle.gargle.HOWL> <43e72e890911102015t3b429a61s353845c8b1d63@mail.gmail.com> From: "Luis R. Rodriguez" Date: Tue, 10 Nov 2009 21:15:30 -0800 Message-ID: <43e72e890911102115p5c84d5f4w5e1dee4f7c523ae9@mail.gmail.com> Subject: Re: ath9k rate control - busted To: Sujith Cc: linux-wireless , "ath9k-devel@lists.ath9k.org" , Aeolus Yang Content-Type: text/plain; charset=UTF-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: So I tested the AP with 11n-only option setting both on 20mhz and 40 mhz channel bandwidth setting (although in reality I only see it setting itself to 20 mhz). The rates are not so bad, I consistant usage of MCS4 with throughput sometimes hitting 30mbps on the end iperf server. Here is the rcstat very 2.0s: cat rcstat Tue Nov 10 21:05:37 2009 Rate Success Retries XRetries PER 1.0: 0 0 0 0 2.0: 0 0 0 0 5.5: 0 0 0 0 11.0: 0 0 0 0 6.0: 0 0 0 0 9.0: 0 0 0 0 12.0: 0 0 0 0 18.0: 0 0 0 0 24.0: 0 0 0 0 36.0: 0 0 0 0 48.0: 0 0 0 0 54.0: 0 0 0 0 6.5: 0 0 0 0 13.0: 1 0 0 0 19.5: 650 77 5 0 26.0: 31906 3022 148 10 39.0: 49889 13260 2853 17 52.0: 3421 2318 1199 28 58.5: 21 81 63 87 65.0: 0 0 0 0 So it seems the issues I saw are only caused on extremely noisy environments. Luis