From owner-freebsd-wireless@FreeBSD.ORG Sun May 8 16:09:39 2011 Return-Path: Delivered-To: freebsd-wireless@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8CCB6106566C for ; Sun, 8 May 2011 16:09:39 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-yw0-f54.google.com (mail-yw0-f54.google.com [209.85.213.54]) by mx1.freebsd.org (Postfix) with ESMTP id 37A4D8FC12 for ; Sun, 8 May 2011 16:09:38 +0000 (UTC) Received: by ywf7 with SMTP id 7so2010035ywf.13 for ; Sun, 08 May 2011 09:09:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; bh=1a90cLctVubjhFwUKMGSCryXtb1dK9lcPd6qmBc3P4E=; b=EdtX5eTVSHq1HFedXZdA3Kln9h+erDMXpYx/araPrA7gj6HsGxRTWeA5H9TFRFwlxd qzsWrT8ZGLvmnYT927MdtdU8OlDYBMNfS3HIpW26uwbea4QWXr93UXTG3vtmBkZzCTby /sdfG+8m46IJsZ1vpw7tL3WK1Ff61CZ20r4xU= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; b=JNs6JQfyHCsk63nhDMNBx9ceLM2c/QEIxSzu6zMeJ+a03dQjSFvcRWfkN0NRXOgCdT c+mgTtvEgYMRziHERq+5lqbU+161ttIs5ZD1EqycRnatCe1pXTplTMG5lEE16vmstyxp eKksv6IM7maqS3d4uDGEAwCAT9zEVNnlBi62U= MIME-Version: 1.0 Received: by 10.150.53.3 with SMTP id b3mr5054874yba.11.1304870978399; Sun, 08 May 2011 09:09:38 -0700 (PDT) Sender: adrian.chadd@gmail.com Received: by 10.150.136.8 with HTTP; Sun, 8 May 2011 09:09:38 -0700 (PDT) In-Reply-To: <201105081542.p48FgluU088372@freefall.freebsd.org> References: <201105081542.p48FgluU088372@freefall.freebsd.org> Date: Mon, 9 May 2011 00:09:38 +0800 X-Google-Sender-Auth: 6cIDLlHbdwBnvA5C729Kk3HUlp0 Message-ID: From: Adrian Chadd To: fluffy@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 Cc: freebsd-wireless@freebsd.org Subject: Re: kern/156884: dev/ath instablity X-BeenThere: freebsd-wireless@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Discussions of 802.11 stack, tools device driver development." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 08 May 2011 16:09:39 -0000 This is an annoying bug; I'm trying to reproduce it locally. I can certainly trigger situations in -HEAD where the AR9285 I have here drops in TX performance down to sub-10mbit. I've tried a few if_ath/HAL versions over the last few months and there has been a change in behaviour, but I can't specifically pinpoint what it's due to and what's "better". Only that it's "different". Between Dima, Martin and I, I think we have enough of a sample of differently-functioning AR9285's to figure out this mess. Please speak up if you're using an AR9285 with -HEAD. Thanks, Adrian