From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ie0-x22f.google.com (mail-ie0-x22f.google.com [IPv6:2607:f8b0:4001:c03::22f]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id 2C04C21F1C6 for ; Mon, 22 Jul 2013 15:42:48 -0700 (PDT) Received: by mail-ie0-f175.google.com with SMTP id a11so16636658iee.20 for ; Mon, 22 Jul 2013 15:42:47 -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:content-transfer-encoding; bh=5qyONv3U/AXlexCVshjrKvZ4W1HX0LdwhMH3efMUzpA=; b=OXbnK07t8cdGifQ9RqEdY/woOGM1kFQSj9pE0AIs/CNWf6JwoqMAFeBN2Pik7pMLOx tVXfZnafAp25emKR4V3rM1vl9v1/oDG2Mc5u+3xDXnBH15R/xoD89ldbCGG95m60ZclV qgVYVNAdsixGRm408Y6AghkpbE25DxyGA5xxt2l/sR9Xej48Vd8Y/qvQ+g2mt63O6pqk c5Cy8jcz+/bwxeBs4Phz99uATuZuLkjekYEDovgVdAp7stkfAPIECyQ/Ankmem/oAS+m HiV8SbpYthUhnoKHXQvknXTSKHUmErvQOcVbN+rq0Ra6440ON1YFFYKtPM7AjA0wvXnM jkfQ== MIME-Version: 1.0 X-Received: by 10.42.254.8 with SMTP id nc8mr18185913icb.49.1374532967618; Mon, 22 Jul 2013 15:42:47 -0700 (PDT) Received: by 10.64.98.162 with HTTP; Mon, 22 Jul 2013 15:42:47 -0700 (PDT) In-Reply-To: References: Date: Mon, 22 Jul 2013 15:42:47 -0700 Message-ID: From: Dave Taht To: "Robinson, Andrew 1. (NSN - US/Mountain View)" Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: "bloat@lists.bufferbloat.net" Subject: Re: [Bloat] Bufferbloat in local networks... X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 22 Jul 2013 22:42:48 -0000 On Mon, Jul 22, 2013 at 3:34 PM, Robinson, Andrew 1. (NSN - US/Mountain View) wrote: > Hi, > > Are there any tools to measure bufferbloat in local networks? The most popular tool for local networks at this point is netperf-wrapper's partial implementation of the rrul test suite. https://github.com/tohojo/netperf-wrapper It only implements about 1/3 of the specification at the moment, but it, when also run with tools like mtr, are helpful for identifying sources of bufferbloat on a local network, if you find any. It is dependent on a recent version of netperf (2.6 or later) being installed on client and server. One misleading thing about the current rrul benchmarks is that it uses ping rather than one way delay measurements, and that the udp traffic generated stops after one loss. What I'd wanted was to be measuring against an isochronous stream rather than something that scaled geometrically with RTT. On that front I have been evaluating owamp's methods and code (in the hope of coming up with something simpler), but so far that's the winner for creating and measuring one way delay and simulating voip and gaming traffic. http://www.internet2.edu/performance/owamp/ Most of my talks use the rrul suite in some way or another, although I think I've been making a mistake in almost always presenting the 8 stream benchmark (I use the single stream stuff a lot)... > > Thanks, > Andrew > > _______________________________________________ > Bloat mailing list > Bloat@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/bloat > --=20 Dave T=E4ht Fixing bufferbloat with cerowrt: http://www.teklibre.com/cerowrt/subscribe.= html