python防止内存溢出（valgrind确认内存泄漏）

Question

我只是使用valgrind来分析我的应用程序的内存泄漏，因为我的内存（8 GB）溢出了很长时间。 内存使用量随运行时间而增加。

我只是发现这种行为可能是故意的： Python内存泄漏？

除了产生新进程来防止此行为之外，还有其他方法吗？

我已经尝试使用python垃圾收集器，但没有成功： 如何在Python中显式释放内存？

我正在使用Python 2.7.3 ...

与手动触发的垃圾收集：

3,145,728 bytes in 1 blocks are possibly lost in loss record 2,715 of 2,715
==16220==    at 0x4C28BED: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==16220==    by 0x463DA4: ??? (in /usr/bin/python2.7)
==16220==    by 0x4A1BB1: PyString_InternInPlace (in /usr/bin/python2.7)
==16220==    by 0x4AAED0: ??? (in /usr/bin/python2.7)
==16220==    by 0x4AAFD6: ??? (in /usr/bin/python2.7)
==16220==    by 0x4AB0C0: ??? (in /usr/bin/python2.7)
==16220==    by 0x4AAFD6: ??? (in /usr/bin/python2.7)
==16220==    by 0x4AB0C0: ??? (in /usr/bin/python2.7)
==16220==    by 0x4AAFD6: ??? (in /usr/bin/python2.7)
==16220==    by 0x4AB0C0: ??? (in /usr/bin/python2.7)
==16220==    by 0x535AE2: PyMarshal_ReadLastObjectFromFile (in /usr/bin/python2.7)
==16220==    by 0x528178: ??? (in /usr/bin/python2.7)
==16220== 
==16220== LEAK SUMMARY:
==16220==    definitely lost: 456 bytes in 10 blocks
==16220==    indirectly lost: 284 bytes in 6 blocks
==16220==      possibly lost: 3,844,678 bytes in 1,533 blocks
==16220==    still reachable: 16,937,271 bytes in 9,558 blocks

无：

==16249== 3,145,728 bytes in 1 blocks are possibly lost in loss record 2,721 of 2,721
==16249==    at 0x4C28BED: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==16249==    by 0x463DA4: ??? (in /usr/bin/python2.7)
==16249==    by 0x4A1BB1: PyString_InternInPlace (in /usr/bin/python2.7)
==16249==    by 0x4AAED0: ??? (in /usr/bin/python2.7)
==16249==    by 0x4AAFD6: ??? (in /usr/bin/python2.7)
==16249==    by 0x4AB0C0: ??? (in /usr/bin/python2.7)
==16249==    by 0x4AAFD6: ??? (in /usr/bin/python2.7)
==16249==    by 0x4AB0C0: ??? (in /usr/bin/python2.7)
==16249==    by 0x4AAFD6: ??? (in /usr/bin/python2.7)
==16249==    by 0x4AB0C0: ??? (in /usr/bin/python2.7)
==16249==    by 0x535AE2: PyMarshal_ReadLastObjectFromFile (in /usr/bin/python2.7)
==16249==    by 0x528178: ??? (in /usr/bin/python2.7)
==16249== 
==16249== LEAK SUMMARY:
==16249==    definitely lost: 456 bytes in 10 blocks
==16249==    indirectly lost: 284 bytes in 6 blocks
==16249==      possibly lost: 3,844,822 bytes in 1,534 blocks
==16249==    still reachable: 16,938,119 bytes in 9,558 blocks

valgrind --tool = massif导致内存使用增加（ 请参阅此链接以获取PDF ）

Answer 1

我看到两种可能的解释：

1. 您无意间保留了对不再需要的某些对象的引用；
2. 您低估了某些对​​象的内存占用量。

解释器有内存泄漏的可能性虽然不是不可能，但比上述任何一种可能性都低得多。

PS与我喜欢valgrind ，我认为它不是用于查明Python程序中的泄漏的非常有用的工具。