Status: New
Owner: ----
Labels: Type-Defect Priority-Medium
New issue 611 by patr...@dropbox.com: Python proto optimization
http://code.google.com/p/protobuf/issues/detail?id=611
(original thread)
https://groups.google.com/forum/#!topic/protobuf/RDAKafkfXYM
I wrote a patch which optimize python proto performance. Feng Xiao asked
me to repost the diff in the issue tracker.
Patch: https://www.dropbox.com/s/q0y44ypti0by779/protobuf-2.5.0.patch1
Changes:
- precompute various varint tables
- don't use proto's ByteSize function for serialization
- got rid of StringIO
Internal benchmark:
- random repeated int32s - ~18% faster
- random repeated int64s - ~20% faster
- random repeated strings - 27% faster
- random repeated bytes - 27% faster
- repeated message with each with a single random string - ~20% faster
NOTE:
- predefined_varints.py is generated by generate_predefined_varints.py
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