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 thread-ring benchmark N=50,000,000

Each chart bar shows how many times slower, one ↓ thread-ring program was, compared to the fastest program.

These are not the only programs that could be written. These are not the only compilers and interpreters. These are not the only programming languages.

Column × shows how many times more each program used compared to the benchmark program that used least.

    sort sortsort
  ×   Program Source Code CPU secs Elapsed secs Memory KB Code B ≈ CPU Load
1.0Haskell GHC 11.459.173,896306  100% 9% 8% 8%
1.6Go #5 14.8714.873,092405  0% 100% 1% 0%
2.0F# Mono #3 18.6518.6438,988329  99% 1% 2% 1%
4.2Erlang 38.4138.39534,164273  0% 0% 1% 99%
4.3Erlang HiPE 39.7439.73535,360273  0% 99% 0% 1%
13Clojure 135.32118.44184,744348  31% 26% 26% 29%
13Clojure #2 135.22119.04164,844299  31% 27% 26% 30%
18Racket 162.01162.0493,596262  0% 1% 1% 100%
19C++ g++ #4 9 min171.319,440572  89% 88% 87% 89%
19C++ g++ #5 9 min173.969,440652  87% 85% 85% 87%
27OCaml #3 5 min247.815,540296  51% 6% 6% 51%
28OCaml #2 5 min256.701,052350  45% 9% 8% 47%
30C gcc #3 271.18271.358,604916  100% 1% 1% 0%
32Lisp SBCL 6 min289.7031,436618  19% 35% 35% 19%
35Ada 2005 GNAT #4 6 min5 min9,856960  16% 33% 33% 15%
36Ada 2005 GNAT #3 6 min5 min9,856727  47% 5% 5% 46%
40Python 3 #2 8 min6 min9,832288  42% 12% 12% 42%
40C gcc #2 7 min6 min4,608575  32% 24% 24% 31%
40Java  #3 7 min6 min161,212530  24% 26% 26% 24%
40C gcc 7 min6 min6,584487  32% 24% 23% 30%
41Ada 2005 GNAT #2 8 min6 min9,840560  22% 38% 38% 21%
41Java  #7 7 min6 min27,672473  25% 25% 25% 25%
42Lisp SBCL #2 8 min6 min31,436571  6% 53% 54% 6%
42C++ g++ #2 7 min6 min6,584588  32% 24% 24% 28%
43F# Mono #2 13 min6 min42,076555  44% 58% 58% 43%
43C gcc #4 7 min6 min8,700761  28% 28% 27% 25%
43Ruby 8 min6 min19,912331  36% 37% 17% 18%
44C++ g++ 9 min6 min5,328636  35% 34% 32% 32%
48C# Mono 14 min7 min20,524476  39% 40% 43% 62%
56Ruby JRuby 11 min8 min600,696342  29% 27% 27% 29%
56OCaml 11 min8 min13,940282  42% 18% 17% 42%
57Ada 2005 GNAT 14 min8 min9,856602  38% 38% 38% 38%
67Perl #3 13 min10 min699,072489  53% 54% 7% 8%
129Ruby #2 28 min19 min19,908215  31% 29% 31% 31%
226Perl 52 min34 min288,772353  38% 38% 33% 33%
Pascal Free Pascal Make Error523
Ruby JRuby #2 Failed228
Rust Bad Output504
Scala Failed296
"wrong" (different) algorithm / less comparable programs
0.1Ada 2005 GNAT #5 0.500.489,5961476
0.1Java  #6 1.020.95153,228543
0.2F# Mono #4 1.751.7521,132267
0.5Java  #2 4.924.8498,000693
1.0C++ g++ #3 9.309.319,444726
1.1Python 3 #3 10.1210.125,592270
2.0Java  #5 20.6918.6998,292432
3.9Java  #4 40.0736.1980,576894
missing benchmark programs
Dart No program
Fortran Intel No program
Hack No program
PHP No program

 thread-ring benchmark : Switch from thread to thread passing one token

diff program output N = 1000 with this output file to check your program is correct before contributing.

Each program should create and keep alive 503 pre-emptive threads, explicity or implicitly linked in a ring, and pass a token between one thread and the next thread at least N times.

We are trying to show the performance of various programming language implementations - so we ask that contributed programs not only give the correct result, but also use the same algorithm to calculate that result.

Each program should

Similar benchmarks are described in Performance Measurements of Threads in Java and Processes in Erlang, 1998; and A Benchmark Test for BCPL Style Coroutines, 2004. (Note: 'Benchmarks that may seem to be concurrent are often sequential. The estone benchmark, for instance, is entirely sequential. So is also the most common implementation of the "ring benchmark'; usually one process is active, while the others wait in a receive statement.') For some language implementations increasing the number of threads quickly results in Death by Concurrency.

Programs may use pre-emptive kernel threads or pre-emptive lightweight threads; but programs that use non pre-emptive threads (coroutines, cooperative threads) and any programs that use custom schedulers, will be listed as interesting alternative implementations. Briefly say what concurrency technique is used in the program header comment.

Revised BSD license

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