view contrib/perf.py @ 18124:79db6d40bced

branchmap: store branchcache in a dedicated object

Value and key of branchcache would benefit from being hold by the same object.
Moreover some logic (update, write, validation) could be move on such object.

The creation of this object is the first step toward this move. The result will
clarify branchcache related code and hide most of the detail in the class
itself. This encapsulation will greatly helps implementation of branchcache for
filtered view of the repo.

# perf.py - performance test routines
'''helper extension to measure performance'''

from mercurial import cmdutil, scmutil, util, match, commands
import time, os, sys

def timer(func, title=None):
    results = []
    begin = time.time()
    count = 0
    while True:
        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 title:
        sys.stderr.write("! %s\n" % title)
    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 = scmutil.match(repo[None], pats, {})
        timer(lambda: len(list(repo.dirstate.walk(m, [], True, False))))
    except Exception:
        try:
            m = scmutil.match(repo[None], pats, {})
            timer(lambda: len([b for a, b, c in repo.dirstate.statwalk([], m)]))
        except Exception:
            timer(lambda: len(list(cmdutil.walk(repo, pats, {}))))

def perfstatus(ui, repo, **opts):
    #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(**opts))))

def clearcaches(cl):
    # behave somewhat consistently across internal API changes
    if util.safehasattr(cl, 'clearcaches'):
        cl.clearcaches()
    elif util.safehasattr(cl, '_nodecache'):
        from mercurial.node import nullid, nullrev
        cl._nodecache = {nullid: nullrev}
        cl._nodepos = None

def perfheads(ui, repo):
    cl = repo.changelog
    def d():
        len(cl.headrevs())
        clearcaches(cl)
    timer(d)

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._tags = None
        return len(repo.tags())
    timer(t)

def perfancestors(ui, repo):
    heads = repo.changelog.headrevs()
    def d():
        for a in repo.changelog.ancestors(heads):
            pass
    timer(d)

def perfancestorset(ui, repo, revset):
    revs = repo.revs(revset)
    heads = repo.changelog.headrevs()
    def d():
        s = repo.changelog.ancestors(heads)
        for rev in revs:
            rev in s
    timer(d)

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 perfdirstatewrite(ui, repo):
    ds = repo.dirstate
    "a" in ds
    def d():
        ds._dirty = True
        ds.write()
    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 perfchangeset(ui, repo, rev):
    n = repo[rev].node()
    def d():
        c = repo.changelog.read(n)
        #repo.changelog._cache = None
    timer(d)

def perfindex(ui, repo):
    import mercurial.revlog
    mercurial.revlog._prereadsize = 2**24 # disable lazy parser in old hg
    n = repo["tip"].node()
    def d():
        cl = mercurial.revlog.revlog(repo.sopener, "00changelog.i")
        cl.rev(n)
    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 perfrevrange(ui, repo, *specs):
    revrange = scmutil.revrange
    timer(lambda: len(revrange(repo, specs)))

def perfnodelookup(ui, repo, rev):
    import mercurial.revlog
    mercurial.revlog._prereadsize = 2**24 # disable lazy parser in old hg
    n = repo[rev].node()
    def d():
        cl = mercurial.revlog.revlog(repo.sopener, "00changelog.i")
        cl.rev(n)
    timer(d)

def perfnodelookup(ui, repo, rev):
    import mercurial.revlog
    mercurial.revlog._prereadsize = 2**24 # disable lazy parser in old hg
    n = repo[rev].node()
    cl = mercurial.revlog.revlog(repo.sopener, "00changelog.i")
    def d():
        cl.rev(n)
        clearcaches(cl)
    timer(d)

def perflog(ui, repo, **opts):
    ui.pushbuffer()
    timer(lambda: commands.log(ui, repo, rev=[], date='', user='',
                               copies=opts.get('rename')))
    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()

def perfcca(ui, repo):
    timer(lambda: scmutil.casecollisionauditor(ui, False, repo.dirstate))

def perffncacheload(ui, repo):
    s = repo.store
    def d():
        s.fncache._load()
    timer(d)

def perffncachewrite(ui, repo):
    s = repo.store
    s.fncache._load()
    def d():
        s.fncache._dirty = True
        s.fncache.write()
    timer(d)

def perffncacheencode(ui, repo):
    s = repo.store
    s.fncache._load()
    def d():
        for p in s.fncache.entries:
            s.encode(p)
    timer(d)

def perfdiffwd(ui, repo):
    """Profile diff of working directory changes"""
    options = {
        'w': 'ignore_all_space',
        'b': 'ignore_space_change',
        'B': 'ignore_blank_lines',
        }

    for diffopt in ('', 'w', 'b', 'B', 'wB'):
        opts = dict((options[c], '1') for c in diffopt)
        def d():
            ui.pushbuffer()
            commands.diff(ui, repo, **opts)
            ui.popbuffer()
        title = 'diffopts: %s' % (diffopt and ('-' + diffopt) or 'none')
        timer(d, title)

def perfrevlog(ui, repo, file_, **opts):
    from mercurial import revlog
    dist = opts['dist']
    def d():
        r = revlog.revlog(lambda fn: open(fn, 'rb'), file_)
        for x in xrange(0, len(r), dist):
            r.revision(r.node(x))

    timer(d)

def perfrevset(ui, repo, expr):
    def d():
        repo.revs(expr)
    timer(d)

cmdtable = {
    'perfcca': (perfcca, []),
    'perffncacheload': (perffncacheload, []),
    'perffncachewrite': (perffncachewrite, []),
    'perffncacheencode': (perffncacheencode, []),
    'perflookup': (perflookup, []),
    'perfrevrange': (perfrevrange, []),
    'perfnodelookup': (perfnodelookup, []),
    'perfparents': (perfparents, []),
    'perfstartup': (perfstartup, []),
    'perfstatus': (perfstatus,
                   [('u', 'unknown', False,
                     'ask status to look for unknown files')]),
    'perfwalk': (perfwalk, []),
    'perfmanifest': (perfmanifest, []),
    'perfchangeset': (perfchangeset, []),
    'perfindex': (perfindex, []),
    'perfheads': (perfheads, []),
    'perftags': (perftags, []),
    'perfancestors': (perfancestors, []),
    'perfancestorset': (perfancestorset, [], "REVSET"),
    'perfdirstate': (perfdirstate, []),
    'perfdirstatedirs': (perfdirstate, []),
    'perfdirstatewrite': (perfdirstatewrite, []),
    'perflog': (perflog,
                [('', 'rename', False, 'ask log to follow renames')]),
    'perftemplating': (perftemplating, []),
    'perfdiffwd': (perfdiffwd, []),
    'perfrevlog': (perfrevlog,
                   [('d', 'dist', 100, 'distance between the revisions')],
                   "[INDEXFILE]"),
    'perfrevset': (perfrevset, [], "REVSET")
}