[pypy-issue] [issue865] Struct.pack and unpack 3x and 6x slower than CPython
tracker at bugs.pypy.org
Thu Sep 8 05:59:57 CEST 2011
Justin Peel <peelpy at gmail.com> added the comment:
Yes, struct.pack and struct.unpack are known to be slower, especially with ints.
Alex Gaynor's unroll-if-alt branch, which I think will be merged soon, should
help out a great deal with this.
Reading and writing to files are also known to be slow because of the extra
memory allocation and copying currently needed in order to make sure that the
buffers used for the actual reading and writing of the files are not moved
during copying by the garbage collector. Some ideas have been discussed to try
to remedy this, but no one has actually worked to fix it yet to my knowledge.
status: unread -> chatting
PyPy bug tracker <tracker at bugs.pypy.org>
More information about the pypy-issue