hi Roger et al, thanks for your extensive reply, I appreciate this. I am a relatively small relay operator with more of an infrastructure background than a software development background, but nevertheless trying to understand and learn from the bug reports and follow up. So I am afraid I can't help you out on details regarding the tor clients that are putting load on the directory authorities.
kinds regards, Paul gr. Paul On Sun, Jun 14, 2020 at 11:58 PM Roger Dingledine <a...@torproject.org> wrote: > On Sun, Jun 14, 2020 at 07:27:55PM +0200, Paul Geurts wrote: > > anything up this weekend? > > > > [image: image.png] > > Yes. There is a mysterious alternative Tor client out there, which is > programmed to do uncompressed directory fetches just from the directory > authorities. It easily overloads directory authorities if they don't use > the defenses we put in for it over the past few months: > https://bugs.torproject.org/33018 > > This alternate set of Tor clients recently came back, and you can see > its impact in e.g. the bandwidth graph for gabelmoo: > > https://metrics.torproject.org/rs.html#details/F2044413DAC2E02E3D6BCF4735A19BCA1DE97281 > > Now, fortunately, it doesn't ask for directory information in the same > way as any of the Tors that we've ever built, so the fix in #33018 was > to keep answering the Tors that we built, while declining to answer > these other requests when we're low on bandwidth. > > But even still, some of the directory authorities are having trouble > under the load, and the resulting desynchronization means that not every > directory authority succeeds at participating in every consensus round. > > That's probably what you're seeing with the inconsistencies on > https://consensus-health.torproject.org/ > > If somebody knows some details of what these other Tor clients actually > are, that would be really helpful to know! > > --Roger > > _______________________________________________ > tor-relays mailing list > tor-relays@lists.torproject.org > https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-relays >
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