-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 28/03/15 06:38, Anonymous Kyoto wrote: > Hi all, ① I just try fetching some information in the descriptors > consensus from directory authorities via Stem library. After > fetching and sum up the bandwidth, I got this number: 30841602 > kilobytes, which is around 246 Gbit. It is quite different from the > number of around 60GBit/s of bandwidth history, and 125 Gbit/s for > Advertised bandwidth in Tor Metrics: > https://metrics.torproject.org/bandwidth.html. I know that the > bandwidth I fetched via Stem library is the line w in consensus > document stated here: > https://gitweb.torproject.org/torspec.git/tree/dir-spec.txt#n1768 > > P/S: Code I wrote to fetch bw is: > >> from stem.descriptor.remote import DescriptorDownloader >> downloader = DescriptorDownloader() print '%s %i ' %(IP, >> int(desc.bandwidth)) > > > ② Next, simultaneously I checked bandwidth of a particular IP > (say, 95.215.44.189), In Consensus, it shows 264 ( > http://171.25.193.9:443/tor/status-vote/current/consensus) In Vote, > it shows 604 ( > http://171.25.193.9:443/tor/status-vote/current/authority) and in > http://torstatus.blutmagie.de/, it shows 66KB > > By reading the Direcroty Protocol, I can figure out the difference > between Consensus and Vote, but Why the last line is also different > from both Consensus and Vote? Do anyone has any idea of how the > site gets the 66KB/s number for bandwidth? > > Looking forward to receiving any comment or answer from you! Yours > Sincerely.
For a start, look up the terms "advertised bandwidth", "bandwidth history", and "consensus weight" on Metrics: https://metrics.torproject.org/about.html Basically, all three numbers are determined via quite different approaches. Also note that consensus weight is not measured in bytes per seconds, but doesn't have any unit. That's why you can't really compare these numbers. All the best, Karsten -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: GPGTools - http://gpgtools.org iQEcBAEBAgAGBQJVF6d+AAoJEJD5dJfVqbCrP+AIAJW7Zvau1xdaoEcLO2iTOWz7 OVnclg4k3IuPV1LsF2nr8sWcd7Not0qumy7KR9JBKmAuGeI5drGgh9DndvTnuUgT wpJtntVUlQKJvt8q5imOsy/UISZvUSWMV4h/J/3SGtx5VQMMuLK1ESmSVnTWUqNx gsfCIYTPtVrmnZrOnZM++8DD0utGRFXM22ikkTfZcHpmJNobl/rnny3D1uuyeCzo 1DLLiajAQa+QGQYt/cCjf7gj/dOtnTMvat6m6glMyk61e8O5TBPbDYsgAuKAUqK1 UxAExd6yauQnXLetA1zIOGA8FL4aQNMBW7UH0zlNnodlotvVFpUrrosXL8bhk74= =0LAV -----END PGP SIGNATURE----- -- tor-talk mailing list - tor-talk@lists.torproject.org To unsubscribe or change other settings go to https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-talk
