Mercurial > hg
view contrib/benchmarks/revset.py @ 46775:c94fa884240b
rust: Preallocate the returned `Vec` in `utils::files::relativize_path`
Profiling `rhg files > /dev/null` on an old snapshot of mozilla-central
(with `perf` and the Firefox Profiler:
https://github.com/firefox-devtools/profiler/blob/main/docs-user/guide-perf-profiling.md)
showed non-trivial time spend in this function and in `realloc`.
This change makes the wall-clock time for that process on my machine
go from ~190 ms to ~150 ms.
Differential Revision: https://phab.mercurial-scm.org/D10199
author | Simon Sapin <simon.sapin@octobus.net> |
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date | Sat, 13 Mar 2021 08:59:03 +0100 |
parents | 2372284d9457 |
children | 6000f5b25c9b |
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# revset.py - asv revset benchmarks # # Copyright 2016 Logilab SA <contact@logilab.fr> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. '''ASV revset benchmarks generated from contrib/base-revsets.txt Each revset benchmark is parameterized with variants (first, last, sort, ...) ''' from __future__ import absolute_import import os import string import sys from . import basedir, perfbench def createrevsetbenchmark(baseset, variants=None): if variants is None: # Default variants variants = ["plain", "first", "last", "sort", "sort+first", "sort+last"] fname = "track_" + "_".join( "".join( [c if c in string.digits + string.letters else " " for c in baseset] ).split() ) def wrap(fname, baseset): @perfbench(name=baseset, params=[("variant", variants)]) def f(perf, variant): revset = baseset if variant != "plain": for var in variant.split("+"): revset = "%s(%s)" % (var, revset) return perf("perfrevset", revset) f.__name__ = fname return f return wrap(fname, baseset) def initializerevsetbenchmarks(): mod = sys.modules[__name__] with open(os.path.join(basedir, 'contrib', 'base-revsets.txt'), 'rb') as fh: for line in fh: baseset = line.strip() if baseset and not baseset.startswith('#'): func = createrevsetbenchmark(baseset) setattr(mod, func.__name__, func) initializerevsetbenchmarks()