On 20 April 2017 at 10:09, Ian Goldberg iang@cs.uwaterloo.ca wrote:

On Thu, Apr 20, 2017 at 10:54:21AM -0000, relayoperator@openmailboxbeta.com wrote:

...

Hi Tom! since maatuska's bwscanner is down [1] I see a significant drop of traffic on many of my relays, and I believe this is related. Do you have any update to [2] on when maatuska will report bwscan results again? thanks, a concerned relayoperator

I am also seeing a strange sudden drop in usage:

https://atlas.torproject.org/#details/BCEDF6C193AA687AE471B8A22EBF6BC57C2D28...

What's going on?

I can confirm that maatuska's bwauth has been down since last weekend and that we've been unable to get the box back up. We're seeing if we can stand up a new one. No ETA. Sorry for the minimal communication on it, but haven't had a more detailed update.

To determine if the loss of maatuska's bwauth has been the particular thing affecting a particular relay is labor intensive at this time: you'd need to see if maatuska had been on the high-side-of-median for your relay measured value resulting in a lower assignment when it went away. You could do this through historical consensus-health documents (use the arrow on the detailed page next to your relay) or through vote+consensus comparisons. Not user friendly though.

We are working on better bwauth analysis tools in #21992, #21993, #21994, and #21882 - but those are bwauths-as-a-whole, not individual relay analysis.

-tom