[tor-bugs] #5190 [Core Tor/Tor]: Collect Rob's patch for throttling flows at guards

Tor Bug Tracker & Wiki blackhole at torproject.org
Fri Jun 2 22:33:19 UTC 2017


#5190: Collect Rob's patch for throttling flows at guards
-------------------------------------------------+-------------------------
 Reporter:  arma                                 |          Owner:
     Type:  task                                 |         Status:
                                                 |  needs_review
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.3.2.x-final
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  performance, scheduling, SponsorZ,   |  Actual Points:
  tor-relay                                      |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by robgjansen):

 The throttling techniques in these patches attempt to distinguish
 persistent bulk flows from bursty flows using approaches based on
 unsupervised learning. I would want additional analysis before
 recommending these get deployed as-is.

 We could consider providing a torrc option where clients could opt-in and
 announce to relays that they want to be throttled, labeling their circuits
 as worse-priority circuits. Guards could then throttled those clients to
 reduce the load that those worse-priority circuits impose on the network.
 This would remove the unsupervised learning parts and greatly simplify the
 algorithms. Not sure who would opt-in though...

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/5190#comment:16>
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