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| author | Antoine Pitrou <solipsis@pitrou.net> | 2009-01-08 21:17:16 (GMT) |
|---|---|---|
| committer | Antoine Pitrou <solipsis@pitrou.net> | 2009-01-08 21:17:16 (GMT) |
| commit | bcd5cbe01ef4306a82f85d0500f9a9f04113f804 (patch) | |
| tree | a9753988bcb56f924a12dac12dc09ad5e54b3119 /Doc/library/hashlib.rst | |
| parent | 5bad41eefc9f80298bb1abe00a5475be8b015c57 (diff) | |
| download | cpython-bcd5cbe01ef4306a82f85d0500f9a9f04113f804.zip cpython-bcd5cbe01ef4306a82f85d0500f9a9f04113f804.tar.gz cpython-bcd5cbe01ef4306a82f85d0500f9a9f04113f804.tar.bz2 | |
Issue #4751: hashlib now releases the GIL when hashing large buffers
(with a hardwired threshold of 2048 bytes), allowing better parallelization
on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
Diffstat (limited to 'Doc/library/hashlib.rst')
| -rw-r--r-- | Doc/library/hashlib.rst | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Doc/library/hashlib.rst b/Doc/library/hashlib.rst index ad2bfa5..7a65d7d 100644 --- a/Doc/library/hashlib.rst +++ b/Doc/library/hashlib.rst @@ -37,6 +37,11 @@ concatenation of the data fed to it so far using the :meth:`digest` or .. note:: + For better multithreading performance, the Python GIL is released for + strings of more than 2047 bytes at object creation or on update. + +.. note:: + Feeding string objects is to :meth:`update` is not supported, as hashes work on bytes, not on characters. |