Return-path: Received: from mail-ww0-f44.google.com ([74.125.82.44]:50307 "EHLO mail-ww0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750932Ab1CHFUc convert rfc822-to-8bit (ORCPT ); Tue, 8 Mar 2011 00:20:32 -0500 Received: by wwa36 with SMTP id 36so488914wwa.1 for ; Mon, 07 Mar 2011 21:20:31 -0800 (PST) MIME-Version: 1.0 In-Reply-To: References: Date: Tue, 8 Mar 2011 10:50:31 +0530 Message-ID: Subject: Re: WMM and 802.11n Qurery, please help! From: Mohammed Shafi To: "M. A." Cc: ath9k-devel@lists.ath9k.org, linux-wireless@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Tue, Mar 8, 2011 at 2:39 AM, M. A. wrote: > Dear all, > > Just an update to my previous query regarding the relation between WMM > and 802.11n: > > Now from what I understand, WMM (802.11e) is part of the 802.11n > standard as it uses features (like block-Ack) in the new (MAC layer) > enhancements such as frame aggregation. > > When WMM is activated (via hostapd: wmm_enabled=1) ?as well as frame > aggregation, I get around 230Mbps UDP/ 170Mbps TCP. When WMM is > deactivated I get 35 ?Mbps UDP and 27 Mbps TCP. > > I tried to identify the causes of this decrease, so I disabled frame > Aggregation (A-MPDU) and disabled all the WMM associated parameters > like tx_queue_data* , wmm_ac_* (BK/BE/VI/VO) /(CW/TXOP/AIFS) etc. but > leaving the WMM option on (wmm_enabled=1). This gave around 45 Mbps > UDP and 33Mbps TCP. Hi, please read through the discussion in this thread "Why is wmm_param required for HT40- in mlme.c" in linux wireless mailing list > > > So my question is what other WMM influencing factor is activated that > is causing the remaining throughput increase from 35 Mbps to 45 Mbps. > Also if someone could explain the WMM traffic identifier's (TID) > relevance in throughput improvement. > > Thank you all very much > -- > To unsubscribe from this list: send the line "unsubscribe linux-wireless" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at ?http://vger.kernel.org/majordomo-info.html >