Re: [Boost-bugs] [Boost C++ Libraries] #7422: Provide a condition variable with zero-overhead performance penality

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #7422: Provide a condition variable with zero-overhead performance penality
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-12-17 23:40:48

#7422: Provide a condition variable with zero-overhead performance penality
------------------------------------------+---------------------------------
  Reporter:  maxim.yegorushkin@…          |       Owner:  viboes            
      Type:  Feature Requests             |      Status:  assigned          
 Milestone:  To Be Determined             |   Component:  thread            
   Version:  Boost 1.51.0                 |    Severity:  Regression        
Resolution:                               |    Keywords:  condition_variable
------------------------------------------+---------------------------------

Comment (by viboes):

 Replying to [comment:23 Maxim Yegorushkin <maxim.yegorushkin@…>]:
 > To double check numbers I re-ran the benchmarks with boost-1.44 (the
 last version with no thread interruption support), trunk and trunk with
 -DBOOST_THREAD_DONT_PROVIDE_INTERRUPTIONS. It was run with your settings
 (10 consumers max, 100 repetitions, 10000 iterations) again, they seem to
 reduce variance well.
 >
 > Median relative times compared to times of std primitives for the three
 variants respectively are -1.1273285%, -7.804532% and -4.0939795%. The
 link to plot is the same:
 /spreadsheet/ccc?key=0Ai_v0rSH1AXrdHl2RDN4UkFYNHZ2aXBUUk5VWmNfcXc on
 docs.google.com.
 >
 > The benchmark was compiled with gcc-4.7.2, optimization flags are "-O3
 -march=native", Fedora 17 and Intel Core i7-3820 CPU.

 Thanks for all these figures. I suspect that you mean boost-1.34, isn't
 it?

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/7422#comment:24>
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