thread-ring Lua #3 program | Computer Language Benchmarks Game

performance measurements

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

N	CPU secs	Elapsed secs	Memory KB	Code B	≈ CPU Load
500,000	0.21	0.21	260	264	0% 0% 9% 100%
5,000,000	2.02	2.02	1,076	264	3% 1% 1% 100%
50,000,000	19.24	19.25	1,080	264	0% 1% 1% 100%

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

thread-ring Lua #3 program source code

-- The Computer Language Benchmarks Game
-- http://benchmarksgame.alioth.debian.org/
-- contributed by Sam Roberts
-- reviewed by Bruno Massa

require"coroutine"

-- first and only argument is number of token passes
local n         = assert(tonumber(arg[1]))

-- fixed size pool
local poolsize  = 503
local threads   = {}

-- cache these to avoid global environment lookups
local create    = coroutine.create
local resume    = coroutine.resume
local yield     = coroutine.yield

local id        = 1
local token     = 0
local ok

local body = function(token)
  while true do
    token = yield(token + 1)
  end
end

-- create all threads
for id = 1, poolsize do
  threads[id] = create(body)
end

-- send the token
repeat
  if id == poolsize then
    id = 1
  else
    id = id + 1
  end
  ok, token = resume(threads[id], token)
until token == n

print(id)

make, command-line, and program output logs

Wed, 30 Jan 2013 04:33:40 GMT

COMMAND LINE:
/usr/local/src/lua-5.2.1/install/bin/lua  threadring.lua-3.lua 50000000

PROGRAM OUTPUT:
292

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Ubuntu : Intel® Q6600® one coreComputer Language Benchmarks Game [[ Play ]]

performance measurements

notes

thread-ring Lua #3 program source code

make, command-line, and program output logs

Ubuntu : Intel® Q6600® one core
Computer Language Benchmarks Game [[ Play ]]