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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"mmap_object_dealloc calls time-consuming msync(), although close doesn't","articleBody":"BPO | [2643](https://bugs.python.org/issue2643)\n--- | :---\nNosy | @loewis, @akuchling, @pitrou, @tpn, @briancurtin\nFiles | \u003cli\u003e[issue2643.diff](https://bugs.python.org/file15839/issue2643.diff \"Uploaded as text/plain at 2010-01-12.18:27:03 by @briancurtin\"): patch against trunk, r77420\u003c/li\u003e\u003cli\u003e[mmap_msync.diff](https://bugs.python.org/file16827/mmap_msync.diff \"Uploaded as text/plain at 2010-04-08.20:21:01 by neologix\"): Patch to remove msync() call when mmap object is deallocated.\u003c/li\u003e\u003cli\u003e[test_mmap.py](https://bugs.python.org/file16828/test_mmap.py \"Uploaded as text/plain at 2010-04-08.20:21:33 by neologix\"): Test script showing msync() latency\u003c/li\u003e\n\n\u003csup\u003e*Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.*\u003c/sup\u003e\n\n\u003cdetails\u003e\u003csummary\u003eShow more details\u003c/summary\u003e\u003cp\u003e\n\nGitHub fields:\n```python\nassignee = None\nclosed_at = \u003cDate 2010-09-21.16:09:20.223\u003e\ncreated_at = \u003cDate 2008-04-16.16:29:01.114\u003e\nlabels = ['type-bug', 'library', 'expert-IO']\ntitle = \"mmap_object_dealloc calls time-consuming msync(), although close doesn't\"\nupdated_at = \u003cDate 2010-09-21.16:09:20.222\u003e\nuser = 'https://bugs.python.org/schmir'\n```\n\nbugs.python.org fields:\n```python\nactivity = \u003cDate 2010-09-21.16:09:20.222\u003e\nactor = 'pitrou'\nassignee = 'none'\nclosed = True\nclosed_date = \u003cDate 2010-09-21.16:09:20.223\u003e\ncloser = 'pitrou'\ncomponents = ['Library (Lib)', 'IO']\ncreation = \u003cDate 2008-04-16.16:29:01.114\u003e\ncreator = 'schmir'\ndependencies = []\nfiles = ['15839', '16827', '16828']\nhgrepos = []\nissue_num = 2643\nkeywords = ['patch', 'needs review']\nmessage_count = 12.0\nmessages = ['65552', '65554', '97643', '97644', '97664', '102495', '102642', '116818', '117072', '117074', '117077', '117079']\nnosy_count = 8.0\nnosy_names = ['loewis', 'akuchling', 'exarkun', 'pitrou', 'schmir', 'trent', 'brian.curtin', 'neologix']\npr_nums = []\npriority = 'normal'\nresolution = 'fixed'\nstage = 'commit review'\nstatus = 'closed'\nsuperseder = None\ntype = 'behavior'\nurl = 'https://bugs.python.org/issue2643'\nversions = ['Python 3.2']\n```\n\n\u003c/p\u003e\u003c/details\u003e\n","author":{"url":"https://github.com/schmir","@type":"Person","name":"schmir"},"datePublished":"2008-04-16T16:29:01.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":12},"url":"https://github.com/46895/cpython/issues/46895"}