I found Russell's insights, and the wikipedia articles that he referenced interesting and helpful. Reference 14 of Bufferbloat article led me to http://netalyzr.icsi.berkeley.edu/ . Netalyzr opined that I had excessive buffering on my now deprecated Wrt54GL running Tomato 1.25 . Netalyzr also revealed other actionable items. Recommended. Well worth the what I paid for it: nothing, except waiting a few minutes for results. -- Pat
On Sat, Feb 22, 2014 at 3:31 PM, Russell Senior <russ...@personaltelco.net>wrote: > >>>>> "Keith" == Keith Lofstrom <kei...@gate.kl-ic.com> writes: > > Keith> 2) I run a Personal Telco access point, and am glad to serve my > Keith> community. However, sometimes my guests use up most of my > Keith> bandwidth. Is there an easy way to thottle the bandwidth > Keith> feeding the access point (it is by itself on a private DMZ) to > Keith> a reasonable fraction of my FIOS feed, say to 3mbps? > > [Keith has a homebrew PTP node, not our standard firmware kit] > > You can only throttle outbound traffic, you have no control over the > order of what is sent to you. Our experience is that you really only > notice other people's traffic when you have a bufferbloat > > https://en.wikipedia.org/wiki/Bufferbloat > > latency problem on the outbound queue, which "feels" slow because your > transmissions are having to wait in a long line to get out. So, look > for upstream saturation. Graphing the traffic volumes in something > like Cacti or Munin can help diagnosing the problem. Other tools like > iftop can help figure out where the traffic is coming from. Running a > modern kernel with CoDeL can help too. > > https://en.wikipedia.org/wiki/CoDel > > > -- > Russell Senior, President > russ...@personaltelco.net > _______________________________________________ > PLUG mailing list > PLUG@lists.pdxlinux.org > http://lists.pdxlinux.org/mailman/listinfo/plug > -- p.j.timl...@ieee.org www.timlick.com 503-476-3119 P.O. Box 581 Dundee OR 97115 _______________________________________________ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug