gevent / gevent / 2563

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travis-ci

Speed of gevent.local.local more, especially for subclasses (2-3x faster)

Do this with some cython tricks and some caching of type attributes.
Cython 0.28 compiles this code to be quite a bit faster than Cython
0.27 does (the below uses 0.28), but it's still a win on both.

The type caching could potentially be a compatibility issue, but in
practice I suspect it won't be.

Benchmarks on 3.6:

+--------------------+------------------+-----------------------------+
| Benchmark          | 3.6              | 3.6 This Branch             |
+====================+==================+=============================+
| getattr gevent     | 190 ns           | 158 ns: 1.20x faster (-17%) |
+--------------------+------------------+-----------------------------+
| setattr gevent     | 180 ns           | 165 ns: 1.09x faster (-8%)  |
+--------------------+------------------+-----------------------------+
| getattr gevent sub | 540 ns           | 175 ns: 3.09x faster (-68%) |
+--------------------+------------------+-----------------------------+
| setattr gevent sub | 528 ns           | 179 ns: 2.95x faster (-66%) |
+--------------------+------------------+-----------------------------+
| setattr native     | 80.8 ns          | 78.8 ns: 1.03x faster (-2%) |
+--------------------+------------------+-----------------------------+

Not significant (3): getattr native; getattr native sub; setattr native sub

Benchmarks on 2.7:

+--------------------+------------------+-----------------------------+
| Benchmark          | local_27_master2 | local_27_tweak2             |
+====================+==================+=============================+
| getattr gevent     | 162 ns           | 158 ns: 1.03x faster (-3%)  |
+--------------------+------------------+-----------------------------+
| setattr gevent     | 173 ns           | 165 ns: 1.04x faster (-4%)  |
+--------------------+------------------+-----------------------------+
| getattr gevent sub | 471 ns           | 181 ns: ... (continued)

97 of 97 new or added lines in 2 files covered. (100.0%)

8314 of 10724 relevant lines covered (77.53%)

2.09 hits per line