Mercurial > hg
view tests/test-ancestor.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 | 3b1b8f25443e |
children | b6db2e80a9ce |
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% lazy ancestor set for [], stoprev = 0, inclusive = False membership: [] iteration: [] % lazy ancestor set for [11, 13], stoprev = 0, inclusive = False membership: [7, 8, 3, 4, 1, 0] iteration: [3, 7, 8, 1, 4, 0, 2] % lazy ancestor set for [1, 3], stoprev = 0, inclusive = False membership: [1, 0] iteration: [0, 1] % lazy ancestor set for [11, 13], stoprev = 0, inclusive = True membership: [11, 13, 7, 8, 3, 4, 1, 0] iteration: [11, 13, 3, 7, 8, 1, 4, 0, 2] % lazy ancestor set for [11, 13], stoprev = 6, inclusive = False membership: [7, 8] iteration: [7, 8] % lazy ancestor set for [11, 13], stoprev = 6, inclusive = True membership: [11, 13, 7, 8] iteration: [11, 13, 7, 8]