performance measurements
Each table row shows performance measurements for this Python dev program with a particular command-line input value N.
| N | CPU secs | Elapsed secs | Memory KB | Code B | ≈ CPU Load |
|---|---|---|---|---|---|
| 6,000,000 | 251.45 | 184.80 | 13,484 | 1191 | 20% 21% 16% 23% 13% 17% 12% 10% |
Read the ↓ make, command line, and program output logs to see how this program was run.
Read chameneos-redux benchmark to see what this program should do.
notes
chameneos-redux Python dev #2 program source code
# The Computer Language Benchmarks Game
# http://benchmarksgame.alioth.debian.org/
# contributed by Daniel Nanz 2008-04-10
# 2to3
import sys
import _thread
import time
# colors and matching
creature_colors = ['blue', 'red', 'yellow']
def complement(c1, c2):
if c1 == c2: return c1
if c1 == 'blue':
if c2 == 'red': return 'yellow'
return 'red'
if c1 == 'red':
if c2 == 'blue': return 'yellow'
return 'blue'
if c2 == 'blue': return 'red'
return 'blue'
compl_dict = dict(((c1, c2), complement(c1, c2))
for c1 in creature_colors
for c2 in creature_colors)
def check_complement(colors=creature_colors, compl=compl_dict):
for c1 in colors:
for c2 in colors:
print('%s + %s -> %s' % (c1, c2, compl[(c1, c2)]))
print('')
# reporting
def spellout(n):
numbers = ['zero', 'one', 'two', 'three', 'four',
'five', 'six', 'seven', 'eight', 'nine']
return ' ' + ' '.join(numbers[int(c)] for c in str(n))
def report(input_zoo, met, self_met):
print(' ' + ' '.join(input_zoo))
for m, sm in zip(met, self_met):
print(str(m) + spellout(sm))
print(spellout(sum(met)) + '\n')
# the zoo
def creature(my_id, venue, my_lock_acquire, in_lock_acquire, out_lock_release):
while True:
my_lock_acquire() # only proceed if not already at meeting place
in_lock_acquire() # only proceed when holding in_lock
venue[0] = my_id # register at meeting place
out_lock_release() # signal "registration ok"
def let_them_meet(meetings_left, input_zoo,
compl=compl_dict, allocate=_thread.allocate_lock):
# prepare
c_no = len(input_zoo)
venue = [-1]
met = [0] * c_no
self_met = [0] * c_no
colors = input_zoo[:]
in_lock = allocate()
in_lock_acquire = in_lock.acquire # function aliases
in_lock_release = in_lock.release # (minor performance gain)
in_lock_acquire()
out_lock = allocate()
out_lock_release = out_lock.release
out_lock_acquire = out_lock.acquire
out_lock_acquire()
locks = [allocate() for c in input_zoo]
# let creatures wild
for ci in range(c_no):
args = (ci, venue, locks[ci].acquire, in_lock_acquire, out_lock_release)
new = _thread.start_new_thread(creature, args)
time.sleep(0.05) # to reduce work-load imbalance
in_lock_release() # signal "meeting_place open for registration"
out_lock_acquire() # only proceed with a "registration ok" signal
id1 = venue[0]
while meetings_left > 0:
in_lock_release()
out_lock_acquire()
id2 = venue[0]
if id1 != id2:
new_color = compl[(colors[id1], colors[id2])]
colors[id1] = new_color
colors[id2] = new_color
met[id1] += 1
met[id2] += 1
else:
self_met[id1] += 1
met[id1] += 1
meetings_left -= 1
if meetings_left > 0:
locks[id1].release() # signal "you were kicked from meeting place"
id1 = id2
else:
report(input_zoo, met, self_met)
def chameneosiate(n):
check_complement()
let_them_meet(n, ['blue', 'red', 'yellow'])
let_them_meet(n, ['blue', 'red', 'yellow', 'red', 'yellow',
'blue', 'red', 'yellow', 'red', 'blue'])
#print ''
chameneosiate(int(sys.argv[1]))
make, command-line, and program output logs
Fri, 09 Sep 2022 05:52:51 GMT COMMAND LINE: /usr/bin/python3.12 chameneosredux.python-dev-2.python-dev 6000000 PROGRAM OUTPUT NOT CHECKED: blue + blue -> blue blue + red -> yellow blue + yellow -> red red + blue -> yellow red + red -> red red + yellow -> blue yellow + blue -> red yellow + red -> blue yellow + yellow -> yellow blue red yellow 4034816 zero 4010964 zero 3954220 zero one two zero zero zero zero zero zero blue red yellow red yellow blue red yellow red blue 1216805 zero 1172986 zero 1189294 zero 1198216 zero 1213576 zero 1201327 zero 1197852 zero 1196072 zero 1208930 zero 1204942 zero one two zero zero zero zero zero zero