On Tue, Oct 03, 2023 at 06:10:21PM +0000, David Fifield wrote:
On Sun, Sep 24, 2023 at 09:38:33PM -0600, David Fifield wrote:
On Thu, Sep 21, 2023 at 09:26:58PM -0600, David Fifield wrote:
I made a graph of the bandwidth on the two bridges since this started happening.
The two vertical lines mark: 2023-09-20 14:00:00 earliest known case of domain resolving to Cloudflare 2023-09-21 18:00:00 change to foursquare.com in rdsys https://gitlab.torproject.org/tpo/anti-censorship/rdsys-admin/-/merge_reques...
- snowflake-02 bandwidth has dwindled to almost nothing. Seriously almost nothing: it's around 3 MB/s currently.
- There's a huge almost instantaneous step in snowflake-01 at around 2023-09-21 13:00:00. At first, I thought this might have been a consequence of the rdsys change, but it's about 5 hours earlier than that. What could it be? Some unrelated unblocking event that just happened to happen while this domain stuff is happening?
The non-use of snowflake-02 continues -- see the attached graph. I'm racking my brain trying to understand that is. snowflake-01 usage has decreased a lot too -- the graph appears to be at about the same level, but you can see it's not brickwalled at the upper end of the range as it was before. Even ignoring the step anomaly at 2023-09-21 13:00:00, it didn't go to zero like snowflake-02 did.
The snowflake-02 bridge is recovering, but very very slowly. It's now up to about 12 MB/s.
The plot thickens—after two weeks of very slow growth, the bandwidth on snowflake-02 suddenly shot up to former levels over about 20 minutes starting at 2023-10-04 11:40. See the attached graphics.
I don't have an explanation for it. snowflake-01 had rebooted about 4 hours earlier: https://bugs.torproject.org/tpo/anti-censorship/pluggable-transports/snowfla... (which accounts for the missing data in the snowflake-01 graph; I didn't immediately restart the bandwidth monitor after the reboot).
