Hi there,
I seem to be running into a problem with freeing memory.
Under OS X all is well, but under Linux there seems to be a problem in the
case of linked data structures.
I have attached a python program which demonstrates the problem. The output
of the script for both linux and OS X are below.
Thanks very much in advance, and for the amazing work on PyPy.
OS X:
2.7.8 (857f34cd4254, Oct 14 2014, 22:01:17)
[PyPy 2.5.0-alpha0 with GCC 4.2.1 Compatible Apple LLVM 6.0
(clang-600.0.51)]
Darwin 14.1.0 ('', '', '')
initial 20 MB
0 558 MB
0 30 MB
1 558 MB
1 31 MB
2 558 MB
2 32 MB
Linux:
2.7.8 (dfffd5d7cc7e, Feb 08 2015, 14:59:48)
[PyPy 2.5.0 with GCC 4.8.2]
Linux 3.13.0-44-generic ('debian', 'jessie/sid', '')
initial 82 MB
0 626 MB
0 626 MB
1 627 MB
1 627 MB
2 627 MB
2 627 MB
import psutil, os, gc, platform, sys
class Node(object):
def __init__(self, node):
self.node = node
def link(n):
node = None
for _ in range(n):
node = Node(node)
return node
mempct = lambda : '%i MB' % (psutil.Process(os.getpid()).memory_info()[0] / 1024 / 1024)
if __name__ == '__main__':
print sys.version
print platform.system(), platform.release(), platform.dist()
print ''
print 'initial', mempct()
n = int(1e7)
for i in range(3):
print
node = link(n)
print i, mempct()
del node
gc.collect()
print i, mempct()
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