From owner-freebsd-wireless@FreeBSD.ORG Mon Feb 11 08:09:52 2013 Return-Path: Delivered-To: freebsd-wireless@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id DC240A00 for ; Mon, 11 Feb 2013 08:09:52 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-wi0-x229.google.com (wi-in-x0229.1e100.net [IPv6:2a00:1450:400c:c05::229]) by mx1.freebsd.org (Postfix) with ESMTP id 6306DC35 for ; Mon, 11 Feb 2013 08:09:52 +0000 (UTC) Received: by mail-wi0-f169.google.com with SMTP id l13so2922786wie.4 for ; Mon, 11 Feb 2013 00:09:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:x-received:sender:date:x-google-sender-auth:message-id :subject:from:to:content-type; bh=xN8oIgc2yBwP3RyXbOhWHE7TtjDC7emVlGC4ecRo4sg=; b=wpRWe6yPTbTaH9l+4jq1sAXhMZS1mvR/L4yFO9KdFwTo2YjadfmFkhnNzyfjiRAgX0 uWZe7S120wqJXlupR7agU/qkBgMmYsc6+JtHEUSu+RtpsM+a6lScRMdsd2mlx3RdIljG oc+sanvQpui2CSwlA/3/sMhCxywCISNeGgxRuO1TU+b3G3rS0KfTwt4QQh40s27Ef3W5 RaOH0njKBYfnDR9GZ5pW4CydRK+ehgR3fwL+sz+HnHgkFJtQ8UhdnQnm9F69ovjGsKEk ZwM2vzN0MTGMBcbvu6Su6ocIPYHFUfBJ+RzBeINIkYwjwcMFPyjes5XSRiAr8Hlu3mmN zIgA== MIME-Version: 1.0 X-Received: by 10.180.93.234 with SMTP id cx10mr9122457wib.34.1360570191621; Mon, 11 Feb 2013 00:09:51 -0800 (PST) Sender: adrian.chadd@gmail.com Received: by 10.216.236.88 with HTTP; Mon, 11 Feb 2013 00:09:51 -0800 (PST) Date: Mon, 11 Feb 2013 00:09:51 -0800 X-Google-Sender-Auth: DyGWE-OWHGcS7tBYuWHp8O_9_C8 Message-ID: Subject: [ath] headsup - I'm likely going to revert a bunch of work in ath(4) soon From: Adrian Chadd To: freebsd-wireless@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 X-BeenThere: freebsd-wireless@freebsd.org X-Mailman-Version: 2.1.14 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: Mon, 11 Feb 2013 08:09:52 -0000 Hi all, I'm likely going to revert a bunch of my work in ath(4) soon. I've been trying to chase down some performance issues that have crept in with my if_transmit() and software queue changes and .. well, to be honest, I'm just plain unhappy with it. It's utterly terrible - performance seems to have dropped down from 150+mbit down to 80mbit when using a FreeBSD transmitter. In hostap mode it seems fine - but in station mode running iperf it just has _terrible_ performance. So I'm going to back things out to some point in time in the past where it behaved ok, then re-apply the bugfixes and spectral scan code. I'm sorry for this code churn. Adrian