Mercurial > hg
view contrib/perf.py @ 29843:00ca4f966ca6
hghave: add a check for unzip(1) that understands symlinks
unzip(1) from the FreeBSD base system does not understand symlinks, so
test-archive-symlinks is busted.
author | Augie Fackler <augie@google.com> |
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date | Thu, 25 Aug 2016 01:25:52 -0400 |
parents | 7e2b389418da |
children | 973cf6c3de30 |
line wrap: on
line source
# perf.py - performance test routines '''helper extension to measure performance''' # "historical portability" policy of perf.py: # # We have to do: # - make perf.py "loadable" with as wide Mercurial version as possible # This doesn't mean that perf commands work correctly with that Mercurial. # BTW, perf.py itself has been available since 1.1 (or eb240755386d). # - make historical perf command work correctly with as wide Mercurial # version as possible # # We have to do, if possible with reasonable cost: # - make recent perf command for historical feature work correctly # with early Mercurial # # We don't have to do: # - make perf command for recent feature work correctly with early # Mercurial from __future__ import absolute_import import functools import os import random import sys import time from mercurial import ( cmdutil, commands, copies, error, extensions, mdiff, merge, revlog, util, ) # for "historical portability": # try to import modules separately (in dict order), and ignore # failure, because these aren't available with early Mercurial try: from mercurial import branchmap # since 2.5 (or bcee63733aad) except ImportError: pass try: from mercurial import obsolete # since 2.3 (or ad0d6c2b3279) except ImportError: pass try: from mercurial import repoview # since 2.5 (or 3a6ddacb7198) except ImportError: pass try: from mercurial import scmutil # since 1.9 (or 8b252e826c68) except ImportError: pass # for "historical portability": # define util.safehasattr forcibly, because util.safehasattr has been # available since 1.9.3 (or 94b200a11cf7) _undefined = object() def safehasattr(thing, attr): return getattr(thing, attr, _undefined) is not _undefined setattr(util, 'safehasattr', safehasattr) # for "historical portability": # use locally defined empty option list, if formatteropts isn't # available, because commands.formatteropts has been available since # 3.2 (or 7a7eed5176a4), even though formatting itself has been # available since 2.2 (or ae5f92e154d3) formatteropts = getattr(commands, "formatteropts", []) # for "historical portability": # use locally defined option list, if debugrevlogopts isn't available, # because commands.debugrevlogopts has been available since 3.7 (or # 5606f7d0d063), even though cmdutil.openrevlog() has been available # since 1.9 (or a79fea6b3e77). revlogopts = getattr(commands, "debugrevlogopts", [ ('c', 'changelog', False, ('open changelog')), ('m', 'manifest', False, ('open manifest')), ('', 'dir', False, ('open directory manifest')), ]) cmdtable = {} # for "historical portability": # define parsealiases locally, because cmdutil.parsealiases has been # available since 1.5 (or 6252852b4332) def parsealiases(cmd): return cmd.lstrip("^").split("|") if safehasattr(cmdutil, 'command'): import inspect command = cmdutil.command(cmdtable) if 'norepo' not in inspect.getargspec(command)[0]: # for "historical portability": # wrap original cmdutil.command, because "norepo" option has # been available since 3.1 (or 75a96326cecb) _command = command def command(name, options=(), synopsis=None, norepo=False): if norepo: commands.norepo += ' %s' % ' '.join(parsealiases(name)) return _command(name, list(options), synopsis) else: # for "historical portability": # define "@command" annotation locally, because cmdutil.command # has been available since 1.9 (or 2daa5179e73f) def command(name, options=(), synopsis=None, norepo=False): def decorator(func): if synopsis: cmdtable[name] = func, list(options), synopsis else: cmdtable[name] = func, list(options) if norepo: commands.norepo += ' %s' % ' '.join(parsealiases(name)) return func return decorator def getlen(ui): if ui.configbool("perf", "stub"): return lambda x: 1 return len def gettimer(ui, opts=None): """return a timer function and formatter: (timer, formatter) This function exists to gather the creation of formatter in a single place instead of duplicating it in all performance commands.""" # enforce an idle period before execution to counteract power management # experimental config: perf.presleep time.sleep(ui.configint("perf", "presleep", 1)) if opts is None: opts = {} # redirect all to stderr ui = ui.copy() ui.fout = ui.ferr # get a formatter fm = ui.formatter('perf', opts) # stub function, runs code only once instead of in a loop # experimental config: perf.stub if ui.configbool("perf", "stub"): return functools.partial(stub_timer, fm), fm return functools.partial(_timer, fm), fm def stub_timer(fm, func, title=None): func() def _timer(fm, 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 fm.startitem() if title: fm.write('title', '! %s\n', title) if r: fm.write('result', '! result: %s\n', r) m = min(results) fm.plain('!') fm.write('wall', ' wall %f', m[0]) fm.write('comb', ' comb %f', m[1] + m[2]) fm.write('user', ' user %f', m[1]) fm.write('sys', ' sys %f', m[2]) fm.write('count', ' (best of %d)', count) fm.plain('\n') @command('perfwalk', formatteropts) def perfwalk(ui, repo, *pats, **opts): timer, fm = gettimer(ui, opts) 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, {})))) fm.end() @command('perfannotate', formatteropts) def perfannotate(ui, repo, f, **opts): timer, fm = gettimer(ui, opts) fc = repo['.'][f] timer(lambda: len(fc.annotate(True))) fm.end() @command('perfstatus', [('u', 'unknown', False, 'ask status to look for unknown files')] + formatteropts) 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, fm = gettimer(ui, opts) timer(lambda: sum(map(len, repo.status(unknown=opts['unknown'])))) fm.end() @command('perfaddremove', formatteropts) def perfaddremove(ui, repo, **opts): timer, fm = gettimer(ui, opts) try: oldquiet = repo.ui.quiet repo.ui.quiet = True matcher = scmutil.match(repo[None]) timer(lambda: scmutil.addremove(repo, matcher, "", dry_run=True)) finally: repo.ui.quiet = oldquiet fm.end() 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 @command('perfheads', formatteropts) def perfheads(ui, repo, **opts): timer, fm = gettimer(ui, opts) cl = repo.changelog def d(): len(cl.headrevs()) clearcaches(cl) timer(d) fm.end() @command('perftags', formatteropts) def perftags(ui, repo, **opts): import mercurial.changelog import mercurial.manifest timer, fm = gettimer(ui, opts) def t(): repo.changelog = mercurial.changelog.changelog(repo.svfs) repo.manifest = mercurial.manifest.manifest(repo.svfs) repo._tags = None return len(repo.tags()) timer(t) fm.end() @command('perfancestors', formatteropts) def perfancestors(ui, repo, **opts): timer, fm = gettimer(ui, opts) heads = repo.changelog.headrevs() def d(): for a in repo.changelog.ancestors(heads): pass timer(d) fm.end() @command('perfancestorset', formatteropts) def perfancestorset(ui, repo, revset, **opts): timer, fm = gettimer(ui, opts) revs = repo.revs(revset) heads = repo.changelog.headrevs() def d(): s = repo.changelog.ancestors(heads) for rev in revs: rev in s timer(d) fm.end() @command('perfdirs', formatteropts) def perfdirs(ui, repo, **opts): timer, fm = gettimer(ui, opts) dirstate = repo.dirstate 'a' in dirstate def d(): dirstate.dirs() del dirstate._dirs timer(d) fm.end() @command('perfdirstate', formatteropts) def perfdirstate(ui, repo, **opts): timer, fm = gettimer(ui, opts) "a" in repo.dirstate def d(): repo.dirstate.invalidate() "a" in repo.dirstate timer(d) fm.end() @command('perfdirstatedirs', formatteropts) def perfdirstatedirs(ui, repo, **opts): timer, fm = gettimer(ui, opts) "a" in repo.dirstate def d(): "a" in repo.dirstate._dirs del repo.dirstate._dirs timer(d) fm.end() @command('perfdirstatefoldmap', formatteropts) def perfdirstatefoldmap(ui, repo, **opts): timer, fm = gettimer(ui, opts) dirstate = repo.dirstate 'a' in dirstate def d(): dirstate._filefoldmap.get('a') del dirstate._filefoldmap timer(d) fm.end() @command('perfdirfoldmap', formatteropts) def perfdirfoldmap(ui, repo, **opts): timer, fm = gettimer(ui, opts) dirstate = repo.dirstate 'a' in dirstate def d(): dirstate._dirfoldmap.get('a') del dirstate._dirfoldmap del dirstate._dirs timer(d) fm.end() @command('perfdirstatewrite', formatteropts) def perfdirstatewrite(ui, repo, **opts): timer, fm = gettimer(ui, opts) ds = repo.dirstate "a" in ds def d(): ds._dirty = True ds.write(repo.currenttransaction()) timer(d) fm.end() @command('perfmergecalculate', [('r', 'rev', '.', 'rev to merge against')] + formatteropts) def perfmergecalculate(ui, repo, rev, **opts): timer, fm = gettimer(ui, opts) wctx = repo[None] rctx = scmutil.revsingle(repo, rev, rev) ancestor = wctx.ancestor(rctx) # we don't want working dir files to be stat'd in the benchmark, so prime # that cache wctx.dirty() def d(): # acceptremote is True because we don't want prompts in the middle of # our benchmark merge.calculateupdates(repo, wctx, rctx, [ancestor], False, False, acceptremote=True, followcopies=True) timer(d) fm.end() @command('perfpathcopies', [], "REV REV") def perfpathcopies(ui, repo, rev1, rev2, **opts): timer, fm = gettimer(ui, opts) ctx1 = scmutil.revsingle(repo, rev1, rev1) ctx2 = scmutil.revsingle(repo, rev2, rev2) def d(): copies.pathcopies(ctx1, ctx2) timer(d) fm.end() @command('perfmanifest', [], 'REV') def perfmanifest(ui, repo, rev, **opts): timer, fm = gettimer(ui, opts) ctx = scmutil.revsingle(repo, rev, rev) t = ctx.manifestnode() def d(): repo.manifest.clearcaches() repo.manifest.read(t) timer(d) fm.end() @command('perfchangeset', formatteropts) def perfchangeset(ui, repo, rev, **opts): timer, fm = gettimer(ui, opts) n = repo[rev].node() def d(): repo.changelog.read(n) #repo.changelog._cache = None timer(d) fm.end() @command('perfindex', formatteropts) def perfindex(ui, repo, **opts): import mercurial.revlog timer, fm = gettimer(ui, opts) mercurial.revlog._prereadsize = 2**24 # disable lazy parser in old hg n = repo["tip"].node() def d(): cl = mercurial.revlog.revlog(repo.svfs, "00changelog.i") cl.rev(n) timer(d) fm.end() @command('perfstartup', formatteropts) def perfstartup(ui, repo, **opts): timer, fm = gettimer(ui, opts) cmd = sys.argv[0] def d(): if os.name != 'nt': os.system("HGRCPATH= %s version -q > /dev/null" % cmd) else: os.environ['HGRCPATH'] = '' os.system("%s version -q > NUL" % cmd) timer(d) fm.end() @command('perfparents', formatteropts) def perfparents(ui, repo, **opts): timer, fm = gettimer(ui, opts) # control the number of commits perfparents iterates over # experimental config: perf.parentscount count = ui.configint("perf", "parentscount", 1000) if len(repo.changelog) < count: raise error.Abort("repo needs %d commits for this test" % count) repo = repo.unfiltered() nl = [repo.changelog.node(i) for i in xrange(count)] def d(): for n in nl: repo.changelog.parents(n) timer(d) fm.end() @command('perfctxfiles', formatteropts) def perfctxfiles(ui, repo, x, **opts): x = int(x) timer, fm = gettimer(ui, opts) def d(): len(repo[x].files()) timer(d) fm.end() @command('perfrawfiles', formatteropts) def perfrawfiles(ui, repo, x, **opts): x = int(x) timer, fm = gettimer(ui, opts) cl = repo.changelog def d(): len(cl.read(x)[3]) timer(d) fm.end() @command('perflookup', formatteropts) def perflookup(ui, repo, rev, **opts): timer, fm = gettimer(ui, opts) timer(lambda: len(repo.lookup(rev))) fm.end() @command('perfrevrange', formatteropts) def perfrevrange(ui, repo, *specs, **opts): timer, fm = gettimer(ui, opts) revrange = scmutil.revrange timer(lambda: len(revrange(repo, specs))) fm.end() @command('perfnodelookup', formatteropts) def perfnodelookup(ui, repo, rev, **opts): timer, fm = gettimer(ui, opts) import mercurial.revlog mercurial.revlog._prereadsize = 2**24 # disable lazy parser in old hg n = repo[rev].node() cl = mercurial.revlog.revlog(repo.svfs, "00changelog.i") def d(): cl.rev(n) clearcaches(cl) timer(d) fm.end() @command('perflog', [('', 'rename', False, 'ask log to follow renames')] + formatteropts) def perflog(ui, repo, rev=None, **opts): if rev is None: rev=[] timer, fm = gettimer(ui, opts) ui.pushbuffer() timer(lambda: commands.log(ui, repo, rev=rev, date='', user='', copies=opts.get('rename'))) ui.popbuffer() fm.end() @command('perfmoonwalk', formatteropts) def perfmoonwalk(ui, repo, **opts): """benchmark walking the changelog backwards This also loads the changelog data for each revision in the changelog. """ timer, fm = gettimer(ui, opts) def moonwalk(): for i in xrange(len(repo), -1, -1): ctx = repo[i] ctx.branch() # read changelog data (in addition to the index) timer(moonwalk) fm.end() @command('perftemplating', formatteropts) def perftemplating(ui, repo, rev=None, **opts): if rev is None: rev=[] timer, fm = gettimer(ui, opts) ui.pushbuffer() timer(lambda: commands.log(ui, repo, rev=rev, date='', user='', template='{date|shortdate} [{rev}:{node|short}]' ' {author|person}: {desc|firstline}\n')) ui.popbuffer() fm.end() @command('perfcca', formatteropts) def perfcca(ui, repo, **opts): timer, fm = gettimer(ui, opts) timer(lambda: scmutil.casecollisionauditor(ui, False, repo.dirstate)) fm.end() @command('perffncacheload', formatteropts) def perffncacheload(ui, repo, **opts): timer, fm = gettimer(ui, opts) s = repo.store def d(): s.fncache._load() timer(d) fm.end() @command('perffncachewrite', formatteropts) def perffncachewrite(ui, repo, **opts): timer, fm = gettimer(ui, opts) s = repo.store s.fncache._load() lock = repo.lock() tr = repo.transaction('perffncachewrite') def d(): s.fncache._dirty = True s.fncache.write(tr) timer(d) lock.release() tr.close() fm.end() @command('perffncacheencode', formatteropts) def perffncacheencode(ui, repo, **opts): timer, fm = gettimer(ui, opts) s = repo.store s.fncache._load() def d(): for p in s.fncache.entries: s.encode(p) timer(d) fm.end() @command('perfdiffwd', formatteropts) def perfdiffwd(ui, repo, **opts): """Profile diff of working directory changes""" timer, fm = gettimer(ui, opts) 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) fm.end() @command('perfrevlog', revlogopts + formatteropts + [('d', 'dist', 100, 'distance between the revisions'), ('s', 'startrev', 0, 'revision to start reading at')], '-c|-m|FILE') def perfrevlog(ui, repo, file_=None, startrev=0, **opts): """Benchmark reading a series of revisions from a revlog. By default, we read every ``-d/--dist`` revision from 0 to tip of the specified revlog. The start revision can be defined via ``-s/--startrev``. """ timer, fm = gettimer(ui, opts) dist = opts['dist'] _len = getlen(ui) def d(): r = cmdutil.openrevlog(repo, 'perfrevlog', file_, opts) for x in xrange(startrev, _len(r), dist): r.revision(r.node(x)) timer(d) fm.end() @command('perfrevlogrevision', revlogopts + formatteropts + [('', 'cache', False, 'use caches instead of clearing')], '-c|-m|FILE REV') def perfrevlogrevision(ui, repo, file_, rev=None, cache=None, **opts): """Benchmark obtaining a revlog revision. Obtaining a revlog revision consists of roughly the following steps: 1. Compute the delta chain 2. Obtain the raw chunks for that delta chain 3. Decompress each raw chunk 4. Apply binary patches to obtain fulltext 5. Verify hash of fulltext This command measures the time spent in each of these phases. """ if opts.get('changelog') or opts.get('manifest'): file_, rev = None, file_ elif rev is None: raise error.CommandError('perfrevlogrevision', 'invalid arguments') r = cmdutil.openrevlog(repo, 'perfrevlogrevision', file_, opts) node = r.lookup(rev) rev = r.rev(node) def dodeltachain(rev): if not cache: r.clearcaches() r._deltachain(rev) def doread(chain): if not cache: r.clearcaches() r._chunkraw(chain[0], chain[-1]) def dodecompress(data, chain): if not cache: r.clearcaches() start = r.start length = r.length inline = r._inline iosize = r._io.size buffer = util.buffer offset = start(chain[0]) for rev in chain: chunkstart = start(rev) if inline: chunkstart += (rev + 1) * iosize chunklength = length(rev) b = buffer(data, chunkstart - offset, chunklength) revlog.decompress(b) def dopatch(text, bins): if not cache: r.clearcaches() mdiff.patches(text, bins) def dohash(text): if not cache: r.clearcaches() r._checkhash(text, node, rev) def dorevision(): if not cache: r.clearcaches() r.revision(node) chain = r._deltachain(rev)[0] data = r._chunkraw(chain[0], chain[-1])[1] bins = r._chunks(chain) text = str(bins[0]) bins = bins[1:] text = mdiff.patches(text, bins) benches = [ (lambda: dorevision(), 'full'), (lambda: dodeltachain(rev), 'deltachain'), (lambda: doread(chain), 'read'), (lambda: dodecompress(data, chain), 'decompress'), (lambda: dopatch(text, bins), 'patch'), (lambda: dohash(text), 'hash'), ] for fn, title in benches: timer, fm = gettimer(ui, opts) timer(fn, title=title) fm.end() @command('perfrevset', [('C', 'clear', False, 'clear volatile cache between each call.'), ('', 'contexts', False, 'obtain changectx for each revision')] + formatteropts, "REVSET") def perfrevset(ui, repo, expr, clear=False, contexts=False, **opts): """benchmark the execution time of a revset Use the --clean option if need to evaluate the impact of build volatile revisions set cache on the revset execution. Volatile cache hold filtered and obsolete related cache.""" timer, fm = gettimer(ui, opts) def d(): if clear: repo.invalidatevolatilesets() if contexts: for ctx in repo.set(expr): pass else: for r in repo.revs(expr): pass timer(d) fm.end() @command('perfvolatilesets', formatteropts) def perfvolatilesets(ui, repo, *names, **opts): """benchmark the computation of various volatile set Volatile set computes element related to filtering and obsolescence.""" timer, fm = gettimer(ui, opts) repo = repo.unfiltered() def getobs(name): def d(): repo.invalidatevolatilesets() obsolete.getrevs(repo, name) return d allobs = sorted(obsolete.cachefuncs) if names: allobs = [n for n in allobs if n in names] for name in allobs: timer(getobs(name), title=name) def getfiltered(name): def d(): repo.invalidatevolatilesets() repoview.filterrevs(repo, name) return d allfilter = sorted(repoview.filtertable) if names: allfilter = [n for n in allfilter if n in names] for name in allfilter: timer(getfiltered(name), title=name) fm.end() @command('perfbranchmap', [('f', 'full', False, 'Includes build time of subset'), ] + formatteropts) def perfbranchmap(ui, repo, full=False, **opts): """benchmark the update of a branchmap This benchmarks the full repo.branchmap() call with read and write disabled """ timer, fm = gettimer(ui, opts) def getbranchmap(filtername): """generate a benchmark function for the filtername""" if filtername is None: view = repo else: view = repo.filtered(filtername) def d(): if full: view._branchcaches.clear() else: view._branchcaches.pop(filtername, None) view.branchmap() return d # add filter in smaller subset to bigger subset possiblefilters = set(repoview.filtertable) allfilters = [] while possiblefilters: for name in possiblefilters: subset = branchmap.subsettable.get(name) if subset not in possiblefilters: break else: assert False, 'subset cycle %s!' % possiblefilters allfilters.append(name) possiblefilters.remove(name) # warm the cache if not full: for name in allfilters: repo.filtered(name).branchmap() # add unfiltered allfilters.append(None) oldread = branchmap.read oldwrite = branchmap.branchcache.write try: branchmap.read = lambda repo: None branchmap.write = lambda repo: None for name in allfilters: timer(getbranchmap(name), title=str(name)) finally: branchmap.read = oldread branchmap.branchcache.write = oldwrite fm.end() @command('perfloadmarkers') def perfloadmarkers(ui, repo): """benchmark the time to parse the on-disk markers for a repo Result is the number of markers in the repo.""" timer, fm = gettimer(ui) timer(lambda: len(obsolete.obsstore(repo.svfs))) fm.end() @command('perflrucachedict', formatteropts + [('', 'size', 4, 'size of cache'), ('', 'gets', 10000, 'number of key lookups'), ('', 'sets', 10000, 'number of key sets'), ('', 'mixed', 10000, 'number of mixed mode operations'), ('', 'mixedgetfreq', 50, 'frequency of get vs set ops in mixed mode')], norepo=True) def perflrucache(ui, size=4, gets=10000, sets=10000, mixed=10000, mixedgetfreq=50, **opts): def doinit(): for i in xrange(10000): util.lrucachedict(size) values = [] for i in xrange(size): values.append(random.randint(0, sys.maxint)) # Get mode fills the cache and tests raw lookup performance with no # eviction. getseq = [] for i in xrange(gets): getseq.append(random.choice(values)) def dogets(): d = util.lrucachedict(size) for v in values: d[v] = v for key in getseq: value = d[key] value # silence pyflakes warning # Set mode tests insertion speed with cache eviction. setseq = [] for i in xrange(sets): setseq.append(random.randint(0, sys.maxint)) def dosets(): d = util.lrucachedict(size) for v in setseq: d[v] = v # Mixed mode randomly performs gets and sets with eviction. mixedops = [] for i in xrange(mixed): r = random.randint(0, 100) if r < mixedgetfreq: op = 0 else: op = 1 mixedops.append((op, random.randint(0, size * 2))) def domixed(): d = util.lrucachedict(size) for op, v in mixedops: if op == 0: try: d[v] except KeyError: pass else: d[v] = v benches = [ (doinit, 'init'), (dogets, 'gets'), (dosets, 'sets'), (domixed, 'mixed') ] for fn, title in benches: timer, fm = gettimer(ui, opts) timer(fn, title=title) fm.end() def uisetup(ui): if (util.safehasattr(cmdutil, 'openrevlog') and not util.safehasattr(commands, 'debugrevlogopts')): # for "historical portability": # In this case, Mercurial should be 1.9 (or a79fea6b3e77) - # 3.7 (or 5606f7d0d063). Therefore, '--dir' option for # openrevlog() should cause failure, because it has been # available since 3.5 (or 49c583ca48c4). def openrevlog(orig, repo, cmd, file_, opts): if opts.get('dir') and not util.safehasattr(repo, 'dirlog'): raise error.Abort("This version doesn't support --dir option", hint="use 3.5 or later") return orig(repo, cmd, file_, opts) extensions.wrapfunction(cmdutil, 'openrevlog', openrevlog)