On Mon, Jul 22, 2013 at 3:34 PM, Robinson, Andrew 1. (NSN - US/Mountain View) <[email protected]> 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 > [email protected] > https://lists.bufferbloat.net/listinfo/bloat > -- Dave Täht Fixing bufferbloat with cerowrt: http://www.teklibre.com/cerowrt/subscribe.html _______________________________________________ Bloat mailing list [email protected] https://lists.bufferbloat.net/listinfo/bloat
