[tor-bugs] #4486 [Analysis]: Research: should N23 actually help in practice?

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Tue Oct 30 21:45:32 UTC 2012


#4486: Research: should N23 actually help in practice?
-------------------------------------+--------------------------------------
 Reporter:  arma                     |          Owner:  robgjansen       
     Type:  task                     |         Status:  needs_information
 Priority:  normal                   |      Milestone:                   
Component:  Analysis                 |        Version:                   
 Keywords:  performance flowcontrol  |         Parent:  #4506            
   Points:                           |   Actualpoints:                   
-------------------------------------+--------------------------------------

Comment(by arma):

 Replying to [comment:37 robgjansen]:
 > I just uploaded a
 [https://trac.torproject.org/projects/tor/attachment/ticket/4486/20121025-apollo-n23-combined.pdf
 new set of graphs], created using arma's n23-2 branch (after fixing the
 missing bracket). These were done with the large-m2.4xlarge distributed
 with Shadow.
 >
 > The graphs generally show improvement for small files only when using
 'N3Initial 50' as evident in all of the time-to-first-byte graphs.
 However, N23 seem to make things worse as more is downloaded through the
 circuit. The only time-to-last-byte improvement is for the 50KiB perf
 clients (who use a new circuit for every download), and again, only when
 using 'N3Initial 50'.

 Does n23 look better when you load down the network a lot more, or when
 you make some client first links crappy (#4487)?

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/4486#comment:39>
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