Mercurial > hg
view tests/sitecustomize.py @ 36146:29dd37a418aa
bdiff: write a native version of splitnewlines
./hg perfunidiff mercurial/manifest.py 0 --count 500 --profile before:
! wall 0.309280 comb 0.350000 user 0.290000 sys 0.060000 (best of 32)
./hg perfunidiff mercurial/manifest.py 0 --count 500 --profile after:
! wall 0.241572 comb 0.260000 user 0.240000 sys 0.020000 (best of 39)
so it's about 20% faster. I hate Python. I wish we could usefully
write this in Rust, but it doesn't look like that's realistic without
using the cpython crate, which I'd still like to avoid.
Differential Revision: https://phab.mercurial-scm.org/D1973
author | Augie Fackler <augie@google.com> |
---|---|
date | Thu, 25 Jan 2018 21:16:28 -0500 |
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