[tor-bugs] #2586 [Metrics]: Compare circuit build timeouts to Torperf completion times

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#2586: Compare circuit build timeouts to Torperf completion times
--------------------------------------+-------------------------------------
 Reporter:  karsten                   |          Owner:  karsten 
     Type:  task                      |         Status:  assigned
 Priority:  normal                    |      Milestone:          
Component:  Metrics                   |        Version:          
 Keywords:  TorPerfIteration20110305  |         Parent:          
   Points:  4                         |   Actualpoints:          
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Changes (by karsten):

  * points:  3 => 4


Comment:

 Replying to [comment:7 mikeperry]:
 > Hrmm, I think the scatter plot is the wrong way to represent this. The
 circuit build timeout doesn't magically make tor fast. It instead should
 be altering the top quartile of results only, and making them more dense.
 It is a strategy for reducing the variance in tor performance.
 >
 > What we should do is plot the circuit build timeout as a line on top of
 the timematrix results that also had the quantile lines on it. We should
 then check to see if the slopes of the circuit build timeout lines has any
 relation to the slopes of the quantile lines.
 >
 > The quantile lines with the most slope over time for the higher
 quantiles seemed to be the slow and slowratio 50kb fetches. It is those
 two in particular we want to look at first.

 I tried to make a graph like the one you described and attached it.  I
 think this graph has a couple of problems:

  - We haven't figured out yet what the quantile lines really mean.  I
 think adding them to the graph is wrong.
  - Completion times and circuit-build timeouts are both in a time unit,
 but particularly for 1MB and 5MB on a different scale.  ggplot doesn't
 allow different y scales for different variables, mostly because the
 authors say it's bad style.

 I'm running out of ideas how to visualize what you expect to see. :(

 Bumping points from 3 to 4.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/2586#comment:10>
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