[Codel] [Bloat] blip: a tool for seeing internet latency with javascript

[Fred Baker (fred)]

On Apr 26, 2013, at 4:04 PM, Dave Taht <dave.taht at gmail.com<mailto:dave.taht at gmail.com>> wrote:

Apenwarr has developed a really unique tool for seeing latency and
packet loss via javascript. I had no idea this was possible:

http://apenwarr.ca/log/?m=201304#26

Indeed, very cool.

For those on PCs running Windows, there is also pingplotter (http://www.pingplotter.com). It sends what amounts to a trace route once a second - a burst of packets back to back with TTLs varying from 1 to the number of hops between you and whatever you're targeting. It tracks not only the end to end behavior but the behavior along the way. If you like, you can leave it running and have it send you an email with a .png of an event that is worse than some threshold. I've attached a graphic it showed me once about a particular path I cared about that happened to have a geosynchronous satcom delay in it.

BTW, the data here is most definitely dated. A ping I just did gave me

--- 212.88.97.49 ping statistics ---
100 packets transmitted, 100 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 364.163/372.373/398.910/5.712 ms


[cid:717DCED7-6136-433E-A8A4-9FF5795D689A at cisco.com]
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