Message287410
I'm sorry, callmethod.patch is tuned other place, and causing SEGV.
method_fastcall2.patch is tuning same function (call_method() in typeobject.c), and uses trick to bypass temporary method object (same to _PyObject_GetMethod()).
$ ./python -m perf timeit --compare-to `pwd`/python.default -s 'class C:' -s ' def __getitem__(self, index): return index' -s 'c=C()' 'c[0]'
python.default: ..................... 155 ns +- 4 ns
python: ..................... 111 ns +- 1 ns
Median +- std dev: [python.default] 155 ns +- 4 ns -> [python] 111 ns +- 1 ns: 1.40x faster (-28%) |
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Date |
User |
Action |
Args |
2017-02-09 12:20:19 | methane | set | recipients:
+ methane, vstinner, serhiy.storchaka |
2017-02-09 12:20:19 | methane | set | messageid: <1486642819.72.0.852650408175.issue29507@psf.upfronthosting.co.za> |
2017-02-09 12:20:19 | methane | link | issue29507 messages |
2017-02-09 12:20:19 | methane | create | |
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