performance measurements

Each table row shows performance measurements for this F# Mono program with a particular command-line input value N.

 N  CPU secs Elapsed secs Memory KB Code B ≈ CPU Load
500,0000.660.6643,220267  3% 2% 2% 93%
5,000,0000.780.7940,016267  99% 6% 1% 3%
50,000,0002.042.0445,516267  1% 99% 1% 1%

Read the ↓ make, command line, and program output logs to see how this program was run.

Read thread-ring benchmark to see what this program should do.

 notes

F# Compiler for F# 3.1 (Open Source Edition)

Mono JIT compiler version 4.1.0 (master/435cc01 Wed May 20 21:03:41 PDT 2015)
LLVM: yes(3.6.0svn-mono-master/ce4fcec)
GC: sgen

 thread-ring F# Mono #4 program source code

(*  The Computer Language Benchmarks Game
    http://benchmarksgame.alioth.debian.org/

    contributed by Jomo Fisher
    modified by Kostas Rontogiannis

    Using an array of Async<unit> for the workers and
    a shared token between threads.

    Compile : 
        fsc --tailcalls+ -O --platform:x64 ThreadRingNew.fs -o ThreadRingNew.exe
    Execute :
        mono ThreadRingNew.exe 50000000
*)

let NumberOfThreads = 503

let mutable (workers : Async<unit>[]) = null
let mutable token = -1

let createWorker i = 
    let next = (i + 1) % NumberOfThreads
    async { if token = 0 then 
                printfn "%d" (i + 1)
                exit 0 
            else 
                token <- token - 1
                return! workers.[next] }

[<EntryPoint>]
let main args = 
    token   <- int args.[0]
    workers <- Array.init NumberOfThreads createWorker
    Async.StartImmediate(workers.[0])
    0

 make, command-line, and program output logs

Fri, 22 May 2015 02:18:56 GMT

MAKE:
mv threadring.fsharp-4.fsharp threadring.fsharp-4.fs
/usr/local/bin/fsharpc --target:exe --platform:x86 -O  -o threadring.fsharp-4.fsharp_run.exe threadring.fsharp-4.fs
F# Compiler for F# 3.1 (Open Source Edition)
Freely distributed under the Apache 2.0 Open Source License

/home/dunham/benchmarksgame_quadcore/threadring/tmp/threadring.fsharp-4.fs(16,1): warning FS0221: The declarations in this file will be placed in an implicit module 'Threadring.fsharp-4' based on the file name 'threadring.fsharp-4.fs'. However this is not a valid F# identifier, so the contents will not be accessible from other files. Consider renaming the file or adding a 'module' or 'namespace' declaration at the top of the file.
rm threadring.fsharp-4.fs
3.90s to complete and log all make actions

COMMAND LINE:
/usr/local/bin/mono --llvm threadring.fsharp-4.fsharp_run.exe 50000000

PROGRAM OUTPUT:
292

Revised BSD license

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