performance measurements
Each table row shows performance measurements for this program with a particular command-line input value N.
| N | CPU secs | Elapsed secs | Memory KB | Code B | ≈ CPU Load |
|---|---|---|---|---|---|
| 5,000,000 | 0.23 | 0.23 | 3,120 | 419 | 4% 0% 100% 0% 0% 0% 4% 4% |
Read the ↓ make, command line, and program output logs to see how this program was run.
Read benchmark to see what this program should do.
notes
source code
# The Computer Language Benchmarks Game
# http://benchmarksgame.alioth.debian.org/
#
# contributed by Daniel Nanz 2008-03-11
# Coroutines via enhanced generators
# 2to3
import sys
import itertools
def main(int n = int(sys.argv[1]), int n_threads=503, cycle=itertools.cycle):
def worker(int worker_id):
cdef int n
n = 1
while True:
if n > 0:
n = (yield (n - 1))
else:
print(worker_id)
raise StopIteration
threadRing = [worker(w) for w in range(1, n_threads + 1)]
for t in threadRing: foo = next(t) # start exec. gen. funcs
sendFuncRing = [t.send for t in threadRing] # speed...
for send in cycle(sendFuncRing):
try:
n = send(n)
except StopIteration:
break
main()
make, command-line, and program output logs
Sun, 23 Apr 2023 09:43:49 GMT MAKE: make[1]: Vstupuje se do adresáře „/home/dundee/work/pybenchmarks/bencher/tmp/threadring/tmp“ cp threadring.cython `echo threadring.cython | sed 's/cython-..//' | sed 's/.cython//'`.pyx cythonize -3 -bi `echo threadring.cython | sed 's/cython-..//' | sed 's/.cython//'`.pyx Compiling /home/dundee/work/pybenchmarks/bencher/tmp/threadring/tmp/threadring.pyx because it changed. [1/1] Cythonizing /home/dundee/work/pybenchmarks/bencher/tmp/threadring/tmp/threadring.pyx make[1]: Opouští se adresář „/home/dundee/work/pybenchmarks/bencher/tmp/threadring/tmp“ 2.87s to complete and log all make actions COMMAND LINE: /usr/bin/python3 -c "import threadring" 5000000 PROGRAM OUTPUT: 181