Hi Tal,

However, we are looking for something more detailed that can show a large number of latency measurements taken periodically (preferably with as small a period as possible).

Have you asked RIPE Atlas for data? I think this is pretty much what you might find useful. Greetings Dan

On Tue, Dec 4, 2012 at 1:05 PM, Tal Mizrahi <talmi@marvell.com> wrote:

Hi,

We are looking for publicly available statistics of network latency measurements taken in large networks. For example, there is FCC's measurements (http://www.fcc.gov/measuring-broadband-america/2012/july). However, we are looking for something more detailed that can show a large number of latency measurements taken periodically (preferably with as small a period as possible).

Any help will be appreciated.

Thanks, Tal Mizrahi.

Would the bufferbloat people be a good place to ask? http://www.bufferbloat.net/ -- http://neon-buddha.net

On Tue, Dec 4, 2012 at 4:05 PM, Tal Mizrahi <talmi@marvell.com> wrote:

Hi,

We are looking for publicly available statistics of network latency measurements taken in large networks. For example, there is FCC's measurements ( http://www.fcc.gov/measuring-broadband-america/2012/july

). However, we are looking for something more detailed that can show a large number of latency measurements taken periodically (preferably with as small a period as possible).

Here are the datasets I'm aware of:

ICSI Netalyzr The FCC measurements MLabs http://www.measurementlab.net/ None of them, to my knowledge, take latency measurements "periodically". I watched a nice demo at a talk about Mlabs a couple weeks ago of the ability to query their data set and plot the results. They happened to plot a million or so latency samples (and they have when those samples were taken). Just don't throw out the "can't possibly happen" outliers; bufferbloat is bad enough (if you look at the Netalyzr scatterplots you can find here http://gettys.wordpress.com/2010/12/06/whose-house-is-of-glasse-must-not-thr... you'll see why...). Unfortunately, latencies measured in *seconds* are not only possible, but not uncommon (e.g. my brother's DSL service has > 3 seconds of buffering in each direction under load). - Jim