On Dec 18, 2013, at 4:51 AM, Karsten Loesing wrote:
Hi Rob, Florian,
thanks for your replies! If you say these statistics may still be useful, then let's leave them in!
Great!
I just worked on a slightly better visualization of the available data. The idea is that the most interesting piece of information, AIUI, is what fraction of connections is used bidirectionally; whether the rest is used mostly for writing or reading doesn't really matter.
Perhaps your are correct for the original reason for collecting this data. But actually, I find it very important and interesting that connections tend to have bursty writing more often than bursty reading!
I also aggregated observations similar to Torperf measurements, by plotting only median and interquartile range. Here's the result:
https://people.torproject.org/~karsten/volatile/connbidirect-2013-09-19-2013...
The old graph containing the same data is still there:
https://metrics.torproject.org/performance.html?graph=connbidirect&start...
Do you like the new graph? Do you have further ideas for improving it?
I do like the new graph, its much cleaner than the old one. But I like the mostly reading/writing parts of the old one too. Maybe we can create two more graphs like the new one (1 for mostly reading and 1 for mostly writing). I also think a stacked percentage area graph (e.g. http://www.highcharts.com/demo/area-stacked-percent) could work here, as a way to get all the data on the same chart.
This graph is only there to show what kind of data we have. If somebody is really interested in the data, they'll have to download the CSV file and do their own analysis. Here's the specification of the file format:
https://metrics.torproject.org/stats.html#connbidirect
All the best, Karsten
If the main goal is to show the data that exists, I think the old graph does that fine. But I think an important subgoal is also to have graphs that make it clear how the data is useful, not only that it exists. Perhaps keep both/all versions?
Best, Rob