Return-path: Received: from nf-out-0910.google.com ([64.233.182.184]:50771 "EHLO nf-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753152AbYIZCpJ (ORCPT ); Thu, 25 Sep 2008 22:45:09 -0400 Received: by nf-out-0910.google.com with SMTP id d3so293069nfc.21 for ; Thu, 25 Sep 2008 19:45:08 -0700 (PDT) Message-ID: (sfid-20080926_044514_952919_9664740C) Date: Thu, 25 Sep 2008 19:45:07 -0700 From: "Steven Noonan" To: "Luis R. Rodriguez" Subject: Re: [RFC V3] mac80211: re-enable aggregation on 2.6.27 Cc: "Tomas Winkler" , "linville@tuxdriver.com" , "johannes@sipsolutions.net" , "yi.zhu@intel.com" , "Luis Rodriguez" , "linux-wireless@vger.kernel.org" In-Reply-To: <20080926015100.GR6204@tesla> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 References: <1222371297-24498-1-git-send-email-tomas.winkler@intel.com> <20080926015100.GR6204@tesla> Sender: linux-wireless-owner@vger.kernel.org List-ID: On Thu, Sep 25, 2008 at 6:51 PM, Luis R. Rodriguez wrote: >> I seem to recall that implementing aggregation was causing issues with >> ath9k > > Just ath9k, there are only two aggregation capable drivers in the > kernel right now, Intel's iwlagn and ath9k. Intel's worked just fine > in my tests. Ah, I see. >> among others (in particular, ath9k was getting slow throughput). > > Yes, but it seems this is a general throughput issue now, not just > related to aggregation. We have been working hard on trying to find > what the cause to the throughput issue is. > I'll keep watching linux-kernel, linux-wireless, ath9k-devel, etc for updates on this. :) >> How's throughput with this version of the aggregation patch? > > Please test and let us know, try HT40 on 11a. We're keen on resolving > this just as with the MIB interrupt issue you say ;) Will do. It will have to wait until Monday though, because I stupidly left my AirPort Extreme router's AC adapter at home (3 hours away). > BTW you need more than this patch to get aggregation working. Below > are the patches you'll need on top of 2.6.27-rc7 to get aggregation > working (and your MIB interrupt storm fixed) with ath9k: > > http://www.kernel.org/pub/linux/kernel/people/mcgrof/patches/ath9k/2008-09-25 The interrupt storm is gone in Linus' master branch (the patch in question got merged today or yesterday, it seems). I'll grab the aggregation patches and start playing with them. - Steven