Mercurial > hg
view tests/test-extensions-wrapfunction.py.out @ 33799:05264fc9d8d6
util: make nogc effective for CPython
279cd80059d4 made `util.nogc` a no-op. It was to optimize PyPy. But it slows
down CPython if many objects (like 300k+) are created.
For example, running `hg log -r .` without extensions in `hg-committed` with
14k+ obsmarkers have the following times:
before | after
hg | chg | hg | chg
-----------------------------
1.262 | 0.860 | 1.077 | 0.619 (seconds, best of 20 runs)
Therefore let's re-enable nogc for CPython.
Differential Revision: https://phab.mercurial-scm.org/D402
author | Jun Wu <quark@fb.com> |
---|---|
date | Mon, 14 Aug 2017 22:28:59 -0700 |
parents | 19578bb84731 |
children | 47e52f079a57 |
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wrap 0: [0, 'orig'] wrap 1: [1, 0, 'orig'] wrap 2: [2, 1, 0, 'orig'] wrap 3: [3, 2, 1, 0, 'orig'] wrap 4: [4, 3, 2, 1, 0, 'orig'] wrap 0: [0, 4, 3, 2, 1, 0, 'orig'] unwrap 3: 3: [0, 4, 2, 1, 0, 'orig'] unwrap -: 0: [4, 2, 1, 0, 'orig'] unwrap 0: 0: [4, 2, 1, 'orig'] unwrap 4: 4: [2, 1, 'orig'] unwrap 0: -: ValueError unwrap 2: 2: [1, 'orig'] unwrap 1: 1: ['orig'] unwrap -: -: IndexError