Created
February 6, 2015 00:29
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Program to eat memory and exit
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import os | |
import psutil | |
PROCESS = psutil.Process(os.getpid()) | |
MEGA = 10 ** 6 | |
MEGA_STR = ' ' * MEGA | |
def pmem(): | |
#tot, avail, percent, used, free = psutil.virtual_memory() | |
svmem = psutil.virtual_memory() | |
tot, avail, used, free = svmem.total / MEGA, svmem.available / MEGA, svmem.used / MEGA, svmem.free / MEGA | |
proc = PROCESS.get_memory_info()[1] / MEGA | |
print('process = %s total = %s avail = %s used = %s free = %s percent = %s' | |
% (proc, tot, avail, used, free, svmem.percent)) | |
def alloc_max_array(): | |
i = 0 | |
ar = [] | |
while True: | |
try: | |
#ar.append(MEGA_STR) # no copy if reusing the same string! | |
ar.append(MEGA_STR + str(i)) | |
except MemoryError: | |
break | |
i += 1 | |
max_i = i - 1 | |
print 'maximum array allocation:', max_i | |
pmem() | |
def alloc_max_str(): | |
i = 0 | |
while True: | |
try: | |
a = ' ' * (i * 10 * MEGA) | |
del a | |
except MemoryError: | |
break | |
i += 1 | |
max_i = i - 1 | |
_ = ' ' * (max_i * 10 * MEGA) | |
print 'maximum string allocation', max_i | |
pmem() | |
pmem() | |
alloc_max_str() | |
alloc_max_array() | |
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