When is a relay stable?

[Marco Bonetti]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Ringo Kamens wrote:
> If I remember correctly, it is calculated by percentile. All the servers
> have their uptime monitored and the highest 50% get marked as stable.
Both uptime and bandwidth, for the record:

"Guard" -- A router is a possible 'Guard' if its Weighted Fractional
Uptime is at least the median for "familiar" active routers, and if
its bandwidth is at least median or at least 250KB/s.
If the total bandwidth of active non-BadExit Exit servers is less
than one third of the total bandwidth of all active servers, no Exit is
listed as a Guard.

     To calculate weighted fractional uptime, compute the fraction
     of time that the router is up in any given day, weighting so that
     downtime and uptime in the past counts less.

     A node is 'familiar' if 1/8 of all active nodes have appeared more
     recently than it, OR it has been around for a few weeks.

from https://svn.torproject.org/svn/tor/trunk/doc/spec/dir-spec.txt
ciao

- --
Marco Bonetti
BT3 EeePC 70x enhancing module: http://sid77.slackware.it/bt3/
Slackintosh Linux Project Developer: http://workaround.ch/
Linux-live for powerpc: http://workaround.ch/pub/rsync/mb/linux-live/
My webstuff: http://sidbox.homelinux.org/

My GnuPG key id: 0x86A91047
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.6 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQFJvBGwyPKw+YapEEcRAp54AJ9p/MdM1XMYjGp+Iz/VvRtAvDil6QCgnoS+
uP/kbbBt2yz8ZntgFk9Yn+s=
=Ydb2
-----END PGP SIGNATURE-----