contrib/revsetbenchmarks.py
author Pierre-Yves David <pierre-yves.david@fb.com>
Tue, 23 Sep 2014 17:09:19 -0700
changeset 22556 480a24ad9f77
parent 22555 2143d794e960
child 23139 e53f6b72a0e4
permissions -rwxr-xr-x
revsetbenchmark: allow comments ('#' prefix) in the revset input
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#!/usr/bin/env python
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# Measure the performance of a list of revsets against multiple revisions
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# defined by parameter. Checkout one by one and run perfrevset with every
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# revset in the list to benchmark its performance.
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#
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# - First argument is a revset of mercurial own repo to runs against.
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# - Second argument is the file from which the revset array will be taken
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#   If second argument is omitted read it from standard input
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#
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# You should run this from the root of your mercurial repository.
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#
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# This script also does one run of the current version of mercurial installed
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# to compare performance.
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import sys
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import os
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from subprocess import check_call, Popen, CalledProcessError, STDOUT, PIPE
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# cannot use argparse, python 2.7 only
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from optparse import OptionParser
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def check_output(*args, **kwargs):
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    kwargs.setdefault('stderr', PIPE)
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    kwargs.setdefault('stdout', PIPE)
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    proc = Popen(*args, **kwargs)
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    output, error = proc.communicate()
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    if proc.returncode != 0:
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        raise CalledProcessError(proc.returncode, ' '.join(args[0]))
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    return output
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def update(rev):
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    """update the repo to a revision"""
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    try:
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        check_call(['hg', 'update', '--quiet', '--check', str(rev)])
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    except CalledProcessError, exc:
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        print >> sys.stderr, 'update to revision %s failed, aborting' % rev
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        sys.exit(exc.returncode)
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def perf(revset, target=None):
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    """run benchmark for this very revset"""
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    try:
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        cmd = ['./hg',
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               '--config',
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               'extensions.perf='
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               + os.path.join(contribdir, 'perf.py'),
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               'perfrevset',
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               revset]
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        if target is not None:
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            cmd.append('-R')
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            cmd.append(target)
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        output = check_output(cmd, stderr=STDOUT)
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        output = output.lstrip('!') # remove useless ! in this context
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        return output.strip()
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    except CalledProcessError, exc:
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        print >> sys.stderr, 'abort: cannot run revset benchmark'
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        sys.exit(exc.returncode)
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def printrevision(rev):
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    """print data about a revision"""
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    sys.stdout.write("Revision: ")
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    sys.stdout.flush()
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    check_call(['hg', 'log', '--rev', str(rev), '--template',
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               '{desc|firstline}\n'])
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def getrevs(spec):
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    """get the list of rev matched by a revset"""
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    try:
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        out = check_output(['hg', 'log', '--template={rev}\n', '--rev', spec])
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    except CalledProcessError, exc:
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        print >> sys.stderr, "abort, can't get revision from %s" % spec
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        sys.exit(exc.returncode)
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    return [r for r in out.split() if r]
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parser = OptionParser(usage="usage: %prog [options] <revs>")
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parser.add_option("-f", "--file",
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                  help="read revset from FILE (stdin if omited)",
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                  metavar="FILE")
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parser.add_option("-R", "--repo",
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                  help="run benchmark on REPO", metavar="REPO")
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(options, args) = parser.parse_args()
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if len(sys.argv) < 2:
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    parser.print_help()
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    sys.exit(255)
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# the directory where both this script and the perf.py extension live.
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contribdir = os.path.dirname(__file__)
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target_rev = args[0]
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revsetsfile = sys.stdin
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if options.file:
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    revsetsfile = open(options.file)
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revsets = [l.strip() for l in revsetsfile if not l.startswith('#')]
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print "Revsets to benchmark"
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print "----------------------------"
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for idx, rset in enumerate(revsets):
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    print "%i) %s" % (idx, rset)
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print "----------------------------"
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print
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revs = getrevs(target_rev)
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results = []
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for r in revs:
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    print "----------------------------"
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    printrevision(r)
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    print "----------------------------"
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    update(r)
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    res = []
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    results.append(res)
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    for idx, rset in enumerate(revsets):
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        data = perf(rset, target=options.repo)
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        res.append(data)
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        print "%i)" % idx, data
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        sys.stdout.flush()
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    print "----------------------------"
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print """
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Result by revset
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================
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"""
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print 'Revision:', revs
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for idx, rev in enumerate(revs):
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    sys.stdout.write('%i) ' % idx)
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    sys.stdout.flush()
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    printrevision(rev)
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print
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print
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for ridx, rset in enumerate(revsets):
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    print "revset #%i: %s" % (ridx, rset)
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    for idx, data in enumerate(results):
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        print '%i) %s' % (idx, data[ridx])
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    print