view contrib/perf.py @ 8589:3edf133dcb5a

dirstate: skip step 3 in walk if nothing new will match

nothing will ever match on match.never
nothing new will match on match.exact (all found in step 1)
nothing new will match on match.match when
  there is no pattern and
  there is no direcory in pats

# perf.py - performance test routines

from mercurial.i18n import _
from mercurial import cmdutil, match, commands
import time, os, sys

def timer(func):
    results = []
    begin = time.time()
    count = 0
    while 1:
        ostart = os.times()
        cstart = time.time()
        r = func()
        cstop = time.time()
        ostop = os.times()
        count += 1
        a, b = ostart, ostop
        results.append((cstop - cstart, b[0] - a[0], b[1]-a[1]))
        if cstop - begin > 3 and count >= 100:
            break
        if cstop - begin > 10 and count >= 3:
            break
    if r:
        sys.stderr.write("! result: %s\n" % r)
    m = min(results)
    sys.stderr.write("! wall %f comb %f user %f sys %f (best of %d)\n"
                     % (m[0], m[1] + m[2], m[1], m[2], count))

def perfwalk(ui, repo, *pats):
    try:
        m = cmdutil.match(repo, pats, {})
        timer(lambda: len(list(repo.dirstate.walk(m, True, False))))
    except:
        try:
            m = cmdutil.match(repo, pats, {})
            timer(lambda: len([b for a,b,c in repo.dirstate.statwalk([], m)]))
        except:
            timer(lambda: len(list(cmdutil.walk(repo, pats, {}))))

def perfstatus(ui, repo, *pats):
    #m = match.always(repo.root, repo.getcwd())
    #timer(lambda: sum(map(len, repo.dirstate.status(m, False, False, False))))
    timer(lambda: sum(map(len, repo.status())))

def perfheads(ui, repo):
    timer(lambda: len(repo.changelog.heads()))

def perftags(ui, repo):
    import mercurial.changelog, mercurial.manifest
    def t():
        repo.changelog = mercurial.changelog.changelog(repo.sopener)
        repo.manifest = mercurial.manifest.manifest(repo.sopener)
        repo.tagscache = None
        return len(repo.tags())
    timer(t)

def perfdirstate(ui, repo):
    "a" in repo.dirstate
    def d():
        repo.dirstate.invalidate()
        "a" in repo.dirstate
    timer(d)

def perfdirstatedirs(ui, repo):
    "a" in repo.dirstate
    def d():
        "a" in repo.dirstate._dirs
        del repo.dirstate._dirs
    timer(d)

def perfmanifest(ui, repo):
    def d():
        t = repo.manifest.tip()
        m = repo.manifest.read(t)
        repo.manifest.mapcache = None
        repo.manifest._cache = None
    timer(d)

def perfindex(ui, repo):
    import mercurial.changelog
    def d():
        t = repo.changelog.tip()
        repo.changelog = mercurial.changelog.changelog(repo.sopener)
        repo.changelog._loadindexmap()
    timer(d)

def perfstartup(ui, repo):
    cmd = sys.argv[0]
    def d():
        os.system("HGRCPATH= %s version -q > /dev/null" % cmd)
    timer(d)

def perfparents(ui, repo):
    nl = [repo.changelog.node(i) for i in xrange(1000)]
    def d():
        for n in nl:
            repo.changelog.parents(n)
    timer(d)

def perflookup(ui, repo, rev):
    timer(lambda: len(repo.lookup(rev)))

def perflog(ui, repo):
    ui.pushbuffer()
    timer(lambda: commands.log(ui, repo, rev=[], date='', user=''))
    ui.popbuffer()

def perftemplating(ui, repo):
    ui.pushbuffer()
    timer(lambda: commands.log(ui, repo, rev=[], date='', user='',
                               template='{date|shortdate} [{rev}:{node|short}]'
                               ' {author|person}: {desc|firstline}\n'))
    ui.popbuffer()

cmdtable = {
    'perflookup': (perflookup, []),
    'perfparents': (perfparents, []),
    'perfstartup': (perfstartup, []),
    'perfstatus': (perfstatus, []),
    'perfwalk': (perfwalk, []),
    'perfmanifest': (perfmanifest, []),
    'perfindex': (perfindex, []),
    'perfheads': (perfheads, []),
    'perftags': (perftags, []),
    'perfdirstate': (perfdirstate, []),
    'perfdirstatedirs': (perfdirstate, []),
    'perflog': (perflog, []),
    'perftemplating': (perftemplating, []),
}