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6042 Linux 83% 889 Windows 12% 220 FreeBSD 3% 71 OpenBSD 1% 41 Darwin .5% 10 NetBSD .1% 5 SunOS 4 DragonFly 4 Bitrig 1 GNU/kFreeBSD 1 ElectroBSD
Market share doesn't really say anything about ability to fill the relay role,
Good point. This also may not be the revealing indication of market share. The distribution can be quite different if the question is not number of relays per platform but fraction of bandwidth by platform or probability of being chosen as exit (or guard, etc.) by platform.
+--------+---------+----------+--------+---------+ | OS | #relays | cw_fract | exit_p | guard_p | +--------+---------+----------+--------+---------+ | Linux | 5691 | 94.654 | 95.137 | 94.690 | | FreeBSD| 207 | 3.728 | 2.847 | 4.457 | | Windows| 473 | 0.547 | 0.390 | 0.103 | | SunOS | 5 | 0.507 | 1.172 | 0.336 | | OpenBSD| 67 | 0.313 | 0.233 | 0.171 | | Darwin | 29 | 0.126 | 0.090 | 0.115 | | Electr | 1 | 0.054 | 0.000 | 0.088 | | Bitrig | 4 | 0.032 | 0.128 | 0.000 | | NetBSD | 9 | 0.032 | 0.000 | 0.037 | | Dragon | 4 | 0.002 | 0.000 | 0.000 | | GNU/kF | 1 | 0.002 | 0.000 | 0.000 | +--------+---------+----------+--------+---------+
onionoo.thecthulhu.com's data from 2015-07-24 14:00 UTC (running relays only)
https://trac.torproject.org/projects/tor/ticket/14862 https://trac.torproject.org/projects/tor/ticket/6856