Return-path: Received: from mail-we0-f181.google.com ([74.125.82.181]:52250 "EHLO mail-we0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933571Ab3BSSd1 (ORCPT ); Tue, 19 Feb 2013 13:33:27 -0500 Received: by mail-we0-f181.google.com with SMTP id t44so5843391wey.26 for ; Tue, 19 Feb 2013 10:33:25 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <20771.50338.434076.484711@gargle.gargle.HOWL> References: <20130219134028.GA26332@pandem0nium> <20771.50338.434076.484711@gargle.gargle.HOWL> Date: Tue, 19 Feb 2013 10:33:25 -0800 Message-ID: (sfid-20130219_193340_092918_749DC5B6) Subject: Re: [ath9k-devel] improve operational ANI in Mesh mode From: Adrian Chadd To: Sujith Manoharan Cc: Georgiewskiy Yuriy , Simon Wunderlich , devel@lists.open80211s.org, 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: It's easy enough to diagnose - just enable NF cal logging. Look at what's being read back from the initial NF cal and what's being written into the time-series average. It may be that something dumb is happening, like there's no per-channel history, or the history from the wrong channel is being used on a new channel. I know the reference driver has a couple of options (per-channel NF history or shared NF history with a "scan" not using the history buffer..) adrian