Return-path: Received: from nbd.name ([88.198.39.176]:45198 "EHLO ds10.mine.nu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755303AbZAENcc (ORCPT ); Mon, 5 Jan 2009 08:32:32 -0500 Message-ID: <49620BE5.9030507@openwrt.org> (sfid-20090105_143250_425175_4F48B4C4) Date: Mon, 05 Jan 2009 14:32:21 +0100 From: Felix Fietkau MIME-Version: 1.0 To: Andi Kleen CC: Larry Finger , Michael Buesch , linux-wireless@vger.kernel.org, John Linville Subject: Re: rate instability in wireless stack References: <20090104164649.GV496@one.firstfloor.org> <200901041736.47650.mb@bu3sch.de> <20090104174123.GW496@one.firstfloor.org> <49615465.4090604@lwfinger.net> <20090105025302.GF496@one.firstfloor.org> <49618497.50809@lwfinger.net> <20090105050248.GG496@one.firstfloor.org> <496193A6.3040608@lwfinger.net> <20090105054830.GJ496@one.firstfloor.org> In-Reply-To: <20090105054830.GJ496@one.firstfloor.org> Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-wireless-owner@vger.kernel.org List-ID: Andi Kleen wrote: > Lots of zeroes. > > -Andi > > rate throughput ewma prob this prob this succ/attempt success attempts > TtP 1 0.0 0.0 0.0 1( 0) 0 0 > 2 0.0 0.0 0.0 0( 0) 0 0 > 5.5 0.0 0.0 0.0 0( 0) 0 0 > 11 0.0 0.0 0.0 0( 0) 0 0 > 6 0.0 0.0 0.0 0( 0) 0 0 > 9 0.0 0.0 0.0 0( 0) 0 0 > 12 0.0 0.0 0.0 0( 0) 0 0 > 18 0.0 0.0 0.0 0( 0) 0 0 > 24 0.0 0.0 0.0 0( 0) 0 0 > 36 0.0 0.0 0.0 0( 0) 0 0 > 48 0.0 0.0 0.0 0( 0) 0 0 > 54 0.0 0.0 0.0 0( 0) 0 2 > > Total packet count:: ideal 46 lookaround 2 It looks like mac80211 is not getting proper feedback from the tx status of the device. Is this with the patch that Larry suggested? If so, please revert that patch and post an updated version of the same stats. The info->status.rates[0].count is supposed to contain the number of tx attempts, not the number of retransmissions (at least that's what minstrel expects). - Felix