From owner-freebsd-wireless@FreeBSD.ORG Sat Sep 22 08:24:44 2012 Return-Path: Delivered-To: freebsd-wireless@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 2AB62106566B for ; Sat, 22 Sep 2012 08:24:44 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-pb0-f54.google.com (mail-pb0-f54.google.com [209.85.160.54]) by mx1.freebsd.org (Postfix) with ESMTP id F0E628FC08 for ; Sat, 22 Sep 2012 08:24:43 +0000 (UTC) Received: by pbbrp2 with SMTP id rp2so9984381pbb.13 for ; Sat, 22 Sep 2012 01:24:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=qtXUShFOAhUoUd9RliuG05s8VBi8qlRf0HnwH3GafCY=; b=A0Rfdj0pIH7bX3t7VgejkgJnTeYX4X27QP9dAFQu5wnimS9sfZkyvJEPhxyZiu5N/p OLPb1Ltu4ObIwH8zDBxw+C9ey9X8kcepPJvQYQxOYwSG4B/UKVdr/ktqrdkxDSKghHdH vfIbQRD2euXvi2+tXohfyz+zTJo267+87qDTuA6lE6RiIm9qCIg+XxpyfTRcIQSSWedg D7jIUe0HpjytAhENPmh7qXRgRGiCGfskwXriEhJ3FpNo2bqLsvT+4By5RWVXPfteqi6k YaselzPq6YxKIJuRbz9IQTGkSPE4KV/eFA6Wk4HUS8lsKHaCx6nI6kJw7aunR4XK4V9U 7jnw== MIME-Version: 1.0 Received: by 10.68.136.40 with SMTP id px8mr21486682pbb.153.1348302283343; Sat, 22 Sep 2012 01:24:43 -0700 (PDT) Received: by 10.68.36.106 with HTTP; Sat, 22 Sep 2012 01:24:43 -0700 (PDT) In-Reply-To: <201209221020.16702.jhugo@meraka.csir.co.za> References: <201209202357.06358.dantavious313@gmail.com> <201209212005.24200.dantavious313@gmail.com> <201209221020.16702.jhugo@meraka.csir.co.za> Date: Sat, 22 Sep 2012 01:24:43 -0700 Message-ID: From: Adrian Chadd To: Johann Hugo Content-Type: text/plain; charset=ISO-8859-1 Cc: freebsd-wireless@freebsd.org Subject: Re: Performance of AR9287 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: Sat, 22 Sep 2012 08:24:44 -0000 I assume you've tweaked the ack, slot, rtsctstimeout? The 11n rate control code is a little more jumpy. I've fixed that in recent checkins. It's not optimal but now it's not as jumpy as before. Update to -HEAD, then use 'athratestats' on the peer MAC address. It's quite useful to see what's actually going on. :-) Adrian On 22 September 2012 01:20, Johann Hugo wrote: > On Saturday 22 September 2012 02:05:23 Derrick Edwards wrote: > >> Thanks again for looking into this. > >> My main concern was the range of network performance that I was getting > >> when the laptop was right in front of the access point. As you can see > >> bandwith varied greatly. > > > > I don't know if it's related, but my RSSI and RATE jumps around quite a lot > while transfering a large file. > > > > Output from loop doing "ifconfig wlan0 list sta" while transfering a big > file. > > > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > 00:0c:42:6c:58:29 1 128 86M 16.5 0 842 9440 E AQHTR HTCAP WME > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > 00:0c:42:6c:58:29 1 128 43M 12.5 0 1063 14784 E AQHTR HTCAP WME > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > 00:0c:42:6c:58:29 1 128 43M 15.5 0 1362 21088 E AQHTR HTCAP WME > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > 00:0c:42:6c:58:29 1 128 86M 15.5 0 1627 27488 E AQHTR HTCAP WME > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > 00:0c:42:6c:58:29 1 128 86M 13.5 0 2150 38976 E AQHTR HTCAP WME > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > 00:0c:42:6c:58:29 1 128 86M 11.5 0 2289 42384 E AQHTR HTCAP WME > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > 00:0c:42:6c:58:29 1 128 29M 24.5 0 3075 60016 E AQHTR HTCAP WME > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > 00:0c:42:6c:58:29 1 128 86M 28.5 0 3369 1600 E AQHTR HTCAP WME > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > 00:0c:42:6c:58:29 1 128 86M 14.0 0 3839 11744 E AQHTR HTCAP WME > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > 00:0c:42:6c:58:29 1 128 29M 13.5 0 87 19936 E AQHTR HTCAP WME > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > 00:0c:42:6c:58:29 1 128 58M 11.5 0 403 27440 E AQHTR HTCAP WME > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > 00:0c:42:6c:58:29 1 128 58M 12.5 0 758 35200 E AQHTR HTCAP WME > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > 00:0c:42:6c:58:29 1 128 58M 11.0 0 1054 42320 E AQHTR HTCAP WME > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > 00:0c:42:6c:58:29 1 128 58M 23.5 0 1249 46512 E AQHTR HTCAP WME > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > 00:0c:42:6c:58:29 1 128 29M 11.0 0 1381 49312 E AQHTR HTCAP WME > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > 00:0c:42:6c:58:29 1 128 58M 11.5 0 1584 54224 E AQHTR HTCAP WME > > > > System info = hybrid > > HW = gateworks ARM > > OS = FreeBSD-9 with ath code from current > > Wifi = RouterBOARD R52nM = AR9220 > > Distance = 8km > > > > B.t.w if I use the same HW with FreeBSD-9 in 11a mode, then RSSI does not > jump around and I get about the same throuput as with N. > > > > I don't have any athstats output, still working on it. > > > > Johann