tor-relays

tor-relays@lists.torproject.org

July 2017

46 participants
42 discussions

torproject debian alpha packages discontinued?
by nusenu 02 Jul '17

02 Jul '17

Hi, if you have any insides on whether there will be tor 0.3.1.x-alpha debian packages on https://deb.torproject.org/torproject.org/dists/ again sometime before September 2017 it would be great if you could share them. (the first tor 0.3.1.x alpha version got release on 2017-05-22) background: I would use that information to decide whether to keep or remove alpha support from relayor [1] (which depends on alpha packages from deb.tpo) thanks, nusenu [1] https://github.com/nusenu/ansible-relayor -- https://mastodon.social/@nusenu https://twitter.com/nusenu_

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Consensus Weight calculation
by Vort 01 Jul '17

01 Jul '17

Hello. Recently I have decided to create a new relay. After several days of waiting, I have realized that decision of Bandwidth Authorities, that my bandwidth is 1000 times lower than it should be, is pretty stable. That is bad on its own, but I was wandering - how many other relays suffers from the same problem? Since all network data is open to analysis, I have decided to calculate some statistics. As "Consensus Weight", theoretically, should correspond to relay's bandwidth, first thought was to compare it with "Advertised Bandwidth" value (assuming there not too many liars on the network). The result has revealed some anomalies: https://s8.hostingkartinok.com/uploads/images/2017/06/fed1cf8b57fc027223c8e… First, and most important, - a lot of relays have bandwidth estimate in range 0-50: 1082 of them. Second - there are incorrect estimates for popular bandwidths of 5, 10 and 20 MBits. Next question was: what estimates was actually assigned to that bandwidth spikes? Maybe all zeroes? This led me to another charts: https://s8.hostingkartinok.com/uploads/images/2017/06/8cefb70fce667a1b89c78… https://s8.hostingkartinok.com/uploads/images/2017/06/2e42634ea3f9b71df8a7f… x here is "Advertised Bandwidth", y is "Consensus Weight". I was expected to see something close to x = y line. But result was much worse. First problem (not too important) is a lot of randomness. 5 MiB relay can be easily detected as 1 MiB or 10 MiB. Second one is a thing, which, probably, steals a lot of available network bandwidth: relays with low "Advertised Bandwidth" gets much less traffic than they can handle. Almost no relay with speed < 500 KiB is rated correctly. Similarly, high-speed relays have higher weight than needed. If all 0-50KiB-estimated relays are capable of serving at least 100 KiB, fixing this problem will lead to ~ (100-25)*1082 = 82 MiB/s increase of network bandwidth. But they have even more potential, I think. Do anyone have ideas how to solve this problem? -- Vort

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