[metrics-team] Consumed Bandwidth and User Count anomaly

[Matthew Finkel]

Hi all!

I noticed the bandwidth history data dropped to ~0 between 21-Nov and
23-Nov, with a noticable decrease beginning on 20-Nov [0]. The available
data from 24 and 25 Nov show an overall decrease in throughput compared
with 19-Nov. Data aren't availabe on 26 or 27 Nov (at this time). Has
anyone looked into this and discovered what caused the drop?

Similarly, and maybe relatedly, the number of users jumped beginning on
26-Nov [1]. This jump is reflected in all of the top-10 countries by relay
users - except UAE [2]. There is a similar jump in bridge users[3].

Were there any changes implemented on the Metrics infrastructure around
this time?

Thanks,
Matt

[0]
https://metrics.torproject.org/bandwidth.html?start=2018-11-18&end=2018-12-01
[1]
https://metrics.torproject.org/userstats-relay-country.html?start=2018-11-15&end=2018-12-01&country=all&events=off
[2] https://metrics.torproject.org/userstats-relay-table.html
[3]
https://metrics.torproject.org/userstats-bridge-country.html?start=2018-11-20&end=2018-12-01&country=all