Return-path: Received: from mail-pb0-f46.google.com ([209.85.160.46]:39346 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751521Ab2IYS3Y (ORCPT ); Tue, 25 Sep 2012 14:29:24 -0400 Received: by pbbrr4 with SMTP id rr4so540368pbb.19 for ; Tue, 25 Sep 2012 11:29:24 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <773DB8A82AB6A046AE0195C68612A3190138FB68@sbs2003.acksys.local> References: <773DB8A82AB6A046AE0195C68612A3190138FB68@sbs2003.acksys.local> From: Thomas Pedersen Date: Tue, 25 Sep 2012 11:29:04 -0700 Message-ID: (sfid-20120925_202928_405780_DFE277D0) Subject: Re: Unexpected periodical Wi-Fi speed drop To: Cedric Debarge Cc: linux-wireless@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-wireless-owner@vger.kernel.org List-ID: Hi Cedric, On Mon, Sep 24, 2012 at 5:57 AM, Cedric Debarge wrote: >>I am encountering a periodic (each 1 second) Wi-Fi transmission speed drop (from 54Mbps to 6Mbps) during an iperf between two mesh portals. >>The speed stays stuck to 6Mbps during about 300ms and then recovers its 54Mbps rate. About 1 second later this happen again. This looks like a regression we had where peer rates were re-initialized on each beacon and was fixed in bae35d92b6a1b6fd8c699415ab90aeeea2a56bc3 "mac80211: don't re-init rate control when receiving mesh beacon". You should be able to find this fix in compat-wireless since 8/23. Thomas