On 08/26/2014 01:52 PM, Keith Lofstrom wrote: > On Tue, Aug 26, 2014 at 08:11:51AM -0700, Dick Steffens wrote: >> On 08/25/2014 09:50 PM, Keith Lofstrom wrote: >> >>> When Verizon offered FIOS, I was outa there. So far, besides the >>> escalating prices, I have been happy with the 15M/5M they offer, and >>> 500 microsecond ping times to friends on the other side of Beaverton >>> is kinda cool. >> What tool do you use to test your speed? I've run the tool on >> speedtest.net a number of times. This morning, around 8:00, I got 28.48 >> Mbps download speed, 5.30 Mpbs upload speed, and a 12 ms ping. > I also use internet speed test. Their ping numbers are useless, because > their OOKLA servers are chosen geographically, not by routing distance. > If packets are going between ComCan't and FrontRear, for example, they > pass through Seattle (probably) or Oakland (maybe) and half a dozen > switches, even if they are going to your next door neighbor (on a > different service). If the packets go through the same fiber switch, > to other customers using the same service in the same area, you are > mostly seeing packet queueing delay through the switch, very small. > > For ping times, I use linux ping(8). When I want details of the path > the packets take, I use linux traceroute(8). The latter can be messy, > because packets can take many routes from here to there. > At this risk of being to network engineering technical for a Linux/Unix mailing list, I will suggest my tool of choice when troubleshooting network performance problems; Iperf.
Iperf is a tool to measure maximum TCP bandwith and allows for the tuning of various parameters and characteristics of UDP. It is the only tool that I know of that actually tests true throughput on the wire between to network nodes. Some ISPs even support Iperf so you can test throughput to your ISP's internet gateway. Any testing to any points beyond that is highly suspicious and subject to change based on many variables outside of your or in many cases your ISP's control. Anyway, with all that being said, I love to geek out on network bandwidth performance tuning and here's a great tutorial for using some tools for doing just that! http://www.cyberciti.biz/faq/linux-unix-test-internet-connection-download-upload-speed/ -- May your IP packets have the wind at their back and the light in their 1's and 0's... _______________________________________________ PLUG mailing list [email protected] http://lists.pdxlinux.org/mailman/listinfo/plug
