From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from MAIL1.WPI.EDU (MAIL1.WPI.EDU [130.215.36.91]) by huchra.bufferbloat.net (Postfix) with ESMTP id 252AB21F21B for ; Thu, 12 Jun 2014 20:49:58 -0700 (PDT) Received: from MAIL1.WPI.EDU (MAIL1.WPI.EDU [130.215.36.91]) by MAIL1.WPI.EDU (8.14.9/8.14.9) with ESMTP id s5D3nvOW005456 for ; Thu, 12 Jun 2014 23:49:57 -0400 X-DKIM: Sendmail DKIM Filter v2.8.3 MAIL1.WPI.EDU s5D3nvOW005456 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=wpi.edu; s=_dkim; t=1402631397; bh=jt/kdkWx5PCQqsd5TLlfFkmLkSP1HP26/bAQStl5uQM=; h=Date:From:To:Subject:Message-ID:References:MIME-Version: Content-Type:In-Reply-To; b=RWkwHxhjdQ9V/mn/CbH0rheQMG/XlqU9pwAIYhWErsh2jp472SylS3rBaaYWZ8Lps vRDuhwsKH7g6Qdp/wom9uc4rbRQ4wfzu/qnzIUy5sNkZ4OZ5MS2OnqHxMIBApa/vFq 7zj5gB5eucMtwGLTQPuev7GloaW9Azq92KVKcEBo= Received: from MX1.WPI.EDU (mx1.wpi.edu [130.215.36.141]) by MAIL1.WPI.EDU (8.14.9/8.14.9) with ESMTP id s5D3nvbj005453 for ; Thu, 12 Jun 2014 23:49:57 -0400 Received: from angus.ind.WPI.EDU (ANGUS.IND.WPI.EDU [130.215.130.21]) by MX1.WPI.EDU (8.14.4/8.14.4) with ESMTP id s5D3nuiD016439 for ; Thu, 12 Jun 2014 23:49:57 -0400 (envelope-from cra@WPI.EDU) Received: from angus.ind.WPI.EDU (localhost [127.0.0.1]) by angus.ind.WPI.EDU (8.14.4/8.14.4) with ESMTP id s5D3nuh6004013 for ; Thu, 12 Jun 2014 23:49:56 -0400 Received: (from cra@localhost) by angus.ind.WPI.EDU (8.14.4/8.14.4/Submit) id s5D3nuof004012 for cerowrt-devel@lists.bufferbloat.net; Thu, 12 Jun 2014 23:49:56 -0400 X-Authentication-Warning: angus.ind.WPI.EDU: cra set sender to cra@WPI.EDU using -f Date: Thu, 12 Jun 2014 23:49:56 -0400 From: Chuck Anderson To: cerowrt-devel@lists.bufferbloat.net Message-ID: <20140613034955.GI4946@angus.ind.WPI.EDU> Mail-Followup-To: cerowrt-devel@lists.bufferbloat.net References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-12-10) Subject: Re: [Cerowrt-devel] BQL, txqueue lengths and the internet of things X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 13 Jun 2014 03:49:59 -0000 On Thu, Jun 12, 2014 at 02:46:18PM -0700, Dave Taht wrote: > > I'd bet the same could be done for > > raspberry pi and perhaps my other toy the wandboard which has a gigE adapter > > Well, measure first? Many of the low end devices can't achieve gigE > in the first place, rendering the BQL method somewhat moot. > > If you can provide a pointer to the right driver I can take a look. > (dmesg | grep eth) Mine's a Rasberry Pi model B running OpenELEC 4.0.4, an XBMC distro: # uname -a Linux OpenELEC 3.14.5 #1 PREEMPT Wed Jun 4 14:03:32 CEST 2014 armv6l GNU/Linux # dmesg|grep eth [ 2.652186] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at usb-bcm2708_usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:70:1c:6e [ 18.188931] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup [ 18.190252] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready [ 19.720667] smsc95xx 1-1.1:1.0 eth0: link up, 100Mbps, full-duplex, lpa 0xCDE1 [ 19.756150] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready So it looks to be 100meg, because it is plugged into a gig capable switch but it comes up at 100. Confirmed with the hardware specs here: http://elinux.org/RPi_Hardware