[tor-bugs] #1991 [Tor Client]: Recognize poor guard performance and switch?

Tor Bug Tracker & Wiki torproject-admin at torproject.org
Fri Oct 1 15:35:27 UTC 2010


#1991: Recognize poor guard performance and switch?
-------------------------+--------------------------------------------------
 Reporter:  arma         |       Owner:                   
     Type:  enhancement  |      Status:  new              
 Priority:  normal       |   Milestone:  Tor: post 0.2.2.x
Component:  Tor Client   |     Version:                   
 Keywords:               |      Parent:                   
-------------------------+--------------------------------------------------
 Ticket #1919 showed that the expected performance when using guards is
 comparable to the expected performance when picking the fastest guards.
 The penalty from using the slowest guards is especially noticeable in the
 1MB and 5MB torperf runs.

 What property is it about the guards that lets us guess when we have the
 slow ones? Can we sum the bandwidth of our top three guards and realize
 that it's significantly below the average?

 Ultimately I expect we'll want the Tor client to be able to recognize that
 it's chosen a poor set of guards and swap in a faster one so it's not in
 the bottom, say, 20%.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/1991>
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