[tor-bugs] #4086 [Analysis]: Compare performance of TokenBucketRefillInterval params in simulated network

Tor Bug Tracker & Wiki torproject-admin at torproject.org
Thu Sep 22 19:48:39 UTC 2011


#4086: Compare performance of TokenBucketRefillInterval params in simulated
network
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 Reporter:  arma      |          Owner:     
     Type:  task      |         Status:  new
 Priority:  normal    |      Milestone:     
Component:  Analysis  |        Version:     
 Keywords:            |         Parent:     
   Points:            |   Actualpoints:     
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 Once we merge #3630, we will start refilling our token buckets 100 times a
 second rather than once a second.

 In theory, this feature should magnify the effect of the
 CircuitPriorityHalflife config option, as well as generally smoothing our
 TCP flows between relays.

 It could have surprising adverse effects though, such as making all of our
 network writes be one cell long (plus IP, TCP, TLS, and MTU overhead).

 So the task here is to run simulated Tor networks with various
 combinations of these config options, at various bandwidth rates, and see
 if there are sweet spots, surprising bad combinations, etc.

 For example, should the TokenBucketRefillInterval value be a function of
 our available bandwidth?

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/4086>
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