Example of output:


$ PYTHONTRACEMALLOC=1 ./python -m test
...
== CPython 3.4.0a1+ (default:2ce9e5f6b47c+, Aug 29 2013, 02:03:02) [GCC 4.7.2 20121109 (Red Hat 4.7.2-8)]
==   Linux-3.9.4-200.fc18.x86_64-x86_64-with-fedora-18-Spherical_Cow little-endian
==   /home/haypo/prog/python/tracemalloc/build/test_python_11087
...
[  1/380] test_grammar
[  2/380] test_opcodes
[  3/380] test_dict
[  4/380] test_builtin
[  5/380] test_exceptions
[  6/380] test_types
[  7/380] test_unittest

2013-08-29 02:06:22: Top 25 allocations per file and line
#1: <frozen importlib._bootstrap>:704: size=5 MiB, count=56227, average=105 B
#2: .../tracemalloc/Lib/linecache.py:127: size=1004 KiB, count=8706, average=118 B
#3: .../Lib/unittest/mock.py:1764: size=895 KiB, count=7841, average=116 B
#4: .../Lib/unittest/mock.py:1805: size=817 KiB, count=15101, average=55 B
#5: .../Lib/test/test_dict.py:35: size=768 KiB, count=8, average=96 KiB
#6: <frozen importlib._bootstrap>:274: size=703 KiB, count=4604, average=156 B
#7: ???:?: size=511 KiB, count=4445, average=117 B
#8: .../Lib/unittest/mock.py:350: size=370 KiB, count=1227, average=308 B
#9: .../Lib/unittest/case.py:306: size=343 KiB, count=1390, average=253 B
#10: .../Lib/unittest/case.py:496: size=330 KiB, count=650, average=521 B
#11: .../Lib/unittest/case.py:327: size=291 KiB, count=717, average=416 B
#12: .../Lib/collections/__init__.py:368: size=239 KiB, count=2170, average=113 B
#13: .../Lib/test/test_grammar.py:132: size=195 KiB, count=1250, average=159 B
#14: .../Lib/unittest/mock.py:379: size=118 KiB, count=152, average=800 B
#15: .../tracemalloc/Lib/contextlib.py:37: size=102 KiB, count=672, average=156 B
#16: <frozen importlib._bootstrap>:1430: size=91 KiB, count=1193, average=78 B
#17: .../tracemalloc/Lib/inspect.py:1399: size=79 KiB, count=104, average=784 B
#18: .../tracemalloc/Lib/abc.py:133: size=77 KiB, count=275, average=289 B
#19: .../Lib/unittest/case.py:43: size=73 KiB, count=593, average=127 B
#20: .../Lib/unittest/mock.py:491: size=67 KiB, count=153, average=450 B
#21: <frozen importlib._bootstrap>:1438: size=64 KiB, count=20, average=3321 B
#22: .../Lib/unittest/case.py:535: size=56 KiB, count=76, average=766 B
#23: .../tracemalloc/Lib/sre_compile.py:508: size=54 KiB, count=115, average=485 B
#24: .../Lib/unittest/case.py:300: size=48 KiB, count=616, average=80 B
#25: .../Lib/test/regrtest.py:1207: size=48 KiB, count=2, average=24 KiB
7333 more: size=4991 KiB, count=28051, average=182 B
Total Python memory: size=17 MiB, count=136358, average=136 B
Total process memory: size=42 MiB (ignore tracemalloc: 22 KiB)