Author ncoghlan
Recipients brett.cannon, ncoghlan, vstinner, zach.ware
Date 2014-08-13.07:26:11
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <1407914775.0.0.111194776963.issue22166@psf.upfronthosting.co.za>
In-reply-to
Content
I did a bit of poking around with tracemalloc (debugging patch diff attached)

encodings._cache is definitely one culprit, but something else is going on where it appears the *test cases* are being kept alive.

For comparison, with my hacked regrtest, I get this for test_cmd_line:

$ ./python -m test -R 3:1 test_grammar
[1/1] test_grammar
beginning 4 repetitions
1234
....[ Top 20 differences ]
/home/ncoghlan/devel/py34/Lib/_weakrefset.py:37: size=9936 B (+9936 B), count=54 (+54), average=184 B
/home/ncoghlan/devel/py34/Lib/_weakrefset.py:38: size=6696 B (+6696 B), count=54 (+54), average=124 B
/home/ncoghlan/devel/py34/Lib/_weakrefset.py:48: size=6480 B (+6480 B), count=27 (+27), average=240 B
/home/ncoghlan/devel/py34/Lib/mimetypes.py:487: size=6176 B (+6176 B), count=1 (+1), average=6176 B
/home/ncoghlan/devel/py34/Lib/ctypes/__init__.py:272: size=2362 B (+2362 B), count=12 (+12), average=197 B
/home/ncoghlan/devel/py34/Lib/ctypes/__init__.py:99: size=2167 B (+2167 B), count=11 (+11), average=197 B
/home/ncoghlan/devel/py34/Lib/ctypes/__init__.py:274: size=2137 B (+2137 B), count=11 (+11), average=194 B
/home/ncoghlan/devel/py34/Lib/_weakrefset.py:92: size=1944 B (+1944 B), count=27 (+27), average=72 B
/home/ncoghlan/devel/py34/Lib/test/regrtest.py:1466: size=1568 B (+1568 B), count=1 (+1), average=1568 B
/home/ncoghlan/devel/py34/Lib/_weakrefset.py:84: size=1344 B (+1344 B), count=14 (+14), average=96 B
/home/ncoghlan/devel/py34/Lib/contextlib.py:38: size=656 B (+656 B), count=1 (+1), average=656 B
/home/ncoghlan/devel/py34/Lib/unittest/suite.py:87: size=512 B (+512 B), count=1 (+1), average=512 B
/home/ncoghlan/devel/py34/Lib/test/support/__init__.py:1735: size=488 B (+488 B), count=1 (+1), average=488 B
/home/ncoghlan/devel/py34/Lib/mimetypes.py:534: size=416 B (+416 B), count=1 (+1), average=416 B
/home/ncoghlan/devel/py34/Lib/mimetypes.py:384: size=416 B (+416 B), count=1 (+1), average=416 B
/home/ncoghlan/devel/py34/Lib/test/regrtest.py:1475: size=224 B (+224 B), count=1 (+1), average=224 B
/home/ncoghlan/devel/py34/Lib/test/regrtest.py:1464: size=224 B (+224 B), count=1 (+1), average=224 B
/home/ncoghlan/devel/py34/Lib/mimetypes.py:387: size=224 B (+224 B), count=1 (+1), average=224 B
/home/ncoghlan/devel/py34/Lib/linecache.py:31: size=224 B (+224 B), count=1 (+1), average=224 B
/home/ncoghlan/devel/py34/Lib/ctypes/__init__.py:103: size=224 B (+224 B), count=1 (+1), average=224 B

test_grammar leaked [-3] references, sum=-3
1 test failed:
    test_grammar

While for test_codecs I get this:

$ ./python -m test -R 3:1 test_codecs
[1/1] test_codecs
beginning 4 repetitions
1234
....[ Top 20 differences ]
/home/ncoghlan/devel/py34/Lib/unittest/case.py:408: size=83.7 KiB (+83.7 KiB), count=206 (+206), average=416 B
/home/ncoghlan/devel/py34/Lib/unittest/case.py:368: size=41.8 KiB (+41.8 KiB), count=411 (+411), average=104 B
/home/ncoghlan/devel/py34/Lib/unittest/case.py:387: size=16.1 KiB (+16.1 KiB), count=206 (+206), average=80 B
/home/ncoghlan/devel/py34/Lib/unittest/suite.py:60: size=14.5 KiB (+14.5 KiB), count=206 (+206), average=72 B
/home/ncoghlan/devel/py34/Lib/unittest/case.py:381: size=13.6 KiB (+13.6 KiB), count=174 (+174), average=80 B
/home/ncoghlan/devel/py34/Lib/test/test_codecs.py:2653: size=12.2 KiB (+12.2 KiB), count=2 (+2), average=6242 B
/home/ncoghlan/devel/py34/Lib/test/regrtest.py:1475: size=12.0 KiB (+12.0 KiB), count=1 (+1), average=12.0 KiB
/home/ncoghlan/devel/py34/Lib/_weakrefset.py:37: size=9936 B (+9936 B), count=54 (+54), average=184 B
/home/ncoghlan/devel/py34/Lib/unittest/loader.py:156: size=7600 B (+7600 B), count=95 (+95), average=80 B
/home/ncoghlan/devel/py34/Lib/_weakrefset.py:38: size=6696 B (+6696 B), count=54 (+54), average=124 B
/home/ncoghlan/devel/py34/Lib/_weakrefset.py:48: size=6480 B (+6480 B), count=27 (+27), average=240 B
/home/ncoghlan/devel/py34/Lib/mimetypes.py:487: size=6176 B (+6176 B), count=1 (+1), average=6176 B
/home/ncoghlan/devel/py34/Lib/unittest/case.py:625: size=3232 B (+3232 B), count=4 (+4), average=808 B
/home/ncoghlan/devel/py34/Lib/test/test_codecs.py:2637: size=2964 B (+2964 B), count=6 (+6), average=494 B
/home/ncoghlan/devel/py34/Lib/test/support/__init__.py:1739: size=2432 B (+2432 B), count=32 (+32), average=76 B
/home/ncoghlan/devel/py34/Lib/ctypes/__init__.py:272: size=2362 B (+2362 B), count=12 (+12), average=197 B
/home/ncoghlan/devel/py34/Lib/unittest/loader.py:70: size=2304 B (+2304 B), count=32 (+32), average=72 B
/home/ncoghlan/devel/py34/Lib/unittest/suite.py:125: size=2168 B (+2168 B), count=7 (+7), average=310 B
/home/ncoghlan/devel/py34/Lib/ctypes/__init__.py:274: size=2137 B (+2137 B), count=11 (+11), average=194 B
/home/ncoghlan/devel/py34/Lib/ctypes/__init__.py:99: size=2071 B (+2071 B), count=10 (+10), average=207 B

test_codecs leaked [5602] references, sum=5602
test_codecs leaked [1056] memory blocks, sum=1056
1 test failed:
    test_codecs
History
Date User Action Args
2014-08-13 07:26:16ncoghlansetrecipients: + ncoghlan, brett.cannon, vstinner, zach.ware
2014-08-13 07:26:15ncoghlansetmessageid: <1407914775.0.0.111194776963.issue22166@psf.upfronthosting.co.za>
2014-08-13 07:26:14ncoghlanlinkissue22166 messages
2014-08-13 07:26:13ncoghlancreate