Mercurial > hg
view tests/sitecustomize.py @ 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 | d2c40510104e |
children | 2372284d9457 |
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from __future__ import absolute_import import os if os.environ.get('COVERAGE_PROCESS_START'): try: import coverage import uuid covpath = os.path.join(os.environ['COVERAGE_DIR'], 'cov.%s' % uuid.uuid1()) cov = coverage.coverage(data_file=covpath, auto_data=True) cov._warn_no_data = False cov._warn_unimported_source = False cov.start() except ImportError: pass