[tor-relays] Guard flag?

Roger Dingledine arma at mit.edu
Thu Apr 7 18:25:45 UTC 2016

On Thu, Apr 07, 2016 at 01:15:45PM -0500, SuperSluether wrote:
> especially since the recommended upload speed is 2Mbps
> (1600kBytes/s).

On https://www.torproject.org/docs/tor-relay-debian.html I wrote "at
least 250 kilobytes/s each way". So that's 2 megabits per second.

Your above confusion is why nobody should ever write "b" or "B" in this
day and age.

And to add more content to this mail, here are moria1's cutoffs at
this moment for flag assignment:

Apr 07 13:50:01.387 [info] dirserv_compute_performance_thresholds():
Cutoffs: For Stable, 1463591 sec uptime, 557597 sec MTBF. For Fast: 102
kilobytes/sec. For Guard: WFU 98.000%, time-known 691200 sec, and
bandwidth 5250 or 4510 kilobytes/sec. We have enough stability data.

That log line is misleading a bit, because the units of weight in the
consensus are not really kilobytes/sec anymore. But what it means is
that moria1 doesn't vote the Guard flag for you unless the measured
consensus weight it's voting for you is 5250 or 4510 (that number depends
on whether exit capacity is scarce in the network at this moment --
I haven't checked if that's the case right now).

Hope that helps,

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