[issue21116] Failure to create multiprocessing shared arrays larger than 50% of memory size under linux

[Charles-François Natali]

Charles-François Natali added the comment:

Zero-filling mmap's backing file isn't really optimal: why not use truncate() instead? This way, it'll avoid completely I/O on filesystems that support sparse files, and should still work on FS that don't.

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nosy: +neologix

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21116>
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