templatekw: clarify the result of {latesttag} when no tag exists
My initial expectation was that the list would be empty, and therefore
detectable with {if()}. The map for {latesttag()} is populated with real values
in this case (except {tag}), so it probably doesn't make any sense to change
this to an empty list.
# 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 gc
import os
import random
import sys
import time
from mercurial import (
bdiff,
changegroup,
cmdutil,
commands,
copies,
error,
extensions,
mdiff,
merge,
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":
# define util.timer forcibly, because util.timer has been available
# since ae5d60bb70c9
if safehasattr(time, 'perf_counter'):
util.timer = time.perf_counter
elif os.name == 'nt':
util.timer = time.clock
else:
util.timer = time.time
# 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(getint(ui, "perf", "presleep", 1))
if opts is None:
opts = {}
# redirect all to stderr unless buffer api is in use
if not ui._buffers:
ui = ui.copy()
uifout = safeattrsetter(ui, 'fout', ignoremissing=True)
if uifout:
# for "historical portability":
# ui.fout/ferr have been available since 1.9 (or 4e1ccd4c2b6d)
uifout.set(ui.ferr)
# get a formatter
uiformatter = getattr(ui, 'formatter', None)
if uiformatter:
fm = uiformatter('perf', opts)
else:
# for "historical portability":
# define formatter locally, because ui.formatter has been
# available since 2.2 (or ae5f92e154d3)
from mercurial import node
class defaultformatter(object):
"""Minimized composition of baseformatter and plainformatter
"""
def __init__(self, ui, topic, opts):
self._ui = ui
if ui.debugflag:
self.hexfunc = node.hex
else:
self.hexfunc = node.short
def __nonzero__(self):
return False
__bool__ = __nonzero__
def startitem(self):
pass
def data(self, **data):
pass
def write(self, fields, deftext, *fielddata, **opts):
self._ui.write(deftext % fielddata, **opts)
def condwrite(self, cond, fields, deftext, *fielddata, **opts):
if cond:
self._ui.write(deftext % fielddata, **opts)
def plain(self, text, **opts):
self._ui.write(text, **opts)
def end(self):
pass
fm = defaultformatter(ui, '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):
gc.collect()
results = []
begin = util.timer()
count = 0
while True:
ostart = os.times()
cstart = util.timer()
r = func()
cstop = util.timer()
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')
# utilities for historical portability
def getint(ui, section, name, default):
# for "historical portability":
# ui.configint has been available since 1.9 (or fa2b596db182)
v = ui.config(section, name, None)
if v is None:
return default
try:
return int(v)
except ValueError:
raise error.ConfigError(("%s.%s is not an integer ('%s')")
% (section, name, v))
def safeattrsetter(obj, name, ignoremissing=False):
"""Ensure that 'obj' has 'name' attribute before subsequent setattr
This function is aborted, if 'obj' doesn't have 'name' attribute
at runtime. This avoids overlooking removal of an attribute, which
breaks assumption of performance measurement, in the future.
This function returns the object to (1) assign a new value, and
(2) restore an original value to the attribute.
If 'ignoremissing' is true, missing 'name' attribute doesn't cause
abortion, and this function returns None. This is useful to
examine an attribute, which isn't ensured in all Mercurial
versions.
"""
if not util.safehasattr(obj, name):
if ignoremissing:
return None
raise error.Abort(("missing attribute %s of %s might break assumption"
" of performance measurement") % (name, obj))
origvalue = getattr(obj, name)
class attrutil(object):
def set(self, newvalue):
setattr(obj, name, newvalue)
def restore(self):
setattr(obj, name, origvalue)
return attrutil()
# utilities to examine each internal API changes
def getbranchmapsubsettable():
# for "historical portability":
# subsettable is defined in:
# - branchmap since 2.9 (or 175c6fd8cacc)
# - repoview since 2.5 (or 59a9f18d4587)
for mod in (branchmap, repoview):
subsettable = getattr(mod, 'subsettable', None)
if subsettable:
return subsettable
# bisecting in bcee63733aad::59a9f18d4587 can reach here (both
# branchmap and repoview modules exist, but subsettable attribute
# doesn't)
raise error.Abort(("perfbranchmap not available with this Mercurial"),
hint="use 2.5 or later")
def getsvfs(repo):
"""Return appropriate object to access files under .hg/store
"""
# for "historical portability":
# repo.svfs has been available since 2.3 (or 7034365089bf)
svfs = getattr(repo, 'svfs', None)
if svfs:
return svfs
else:
return getattr(repo, 'sopener')
def getvfs(repo):
"""Return appropriate object to access files under .hg
"""
# for "historical portability":
# repo.vfs has been available since 2.3 (or 7034365089bf)
vfs = getattr(repo, 'vfs', None)
if vfs:
return vfs
else:
return getattr(repo, 'opener')
def repocleartagscachefunc(repo):
"""Return the function to clear tags cache according to repo internal API
"""
if util.safehasattr(repo, '_tagscache'): # since 2.0 (or 9dca7653b525)
# in this case, setattr(repo, '_tagscache', None) or so isn't
# correct way to clear tags cache, because existing code paths
# expect _tagscache to be a structured object.
def clearcache():
# _tagscache has been filteredpropertycache since 2.5 (or
# 98c867ac1330), and delattr() can't work in such case
if '_tagscache' in vars(repo):
del repo.__dict__['_tagscache']
return clearcache
repotags = safeattrsetter(repo, '_tags', ignoremissing=True)
if repotags: # since 1.4 (or 5614a628d173)
return lambda : repotags.set(None)
repotagscache = safeattrsetter(repo, 'tagscache', ignoremissing=True)
if repotagscache: # since 0.6 (or d7df759d0e97)
return lambda : repotagscache.set(None)
# Mercurial earlier than 0.6 (or d7df759d0e97) logically reaches
# this point, but it isn't so problematic, because:
# - repo.tags of such Mercurial isn't "callable", and repo.tags()
# in perftags() causes failure soon
# - perf.py itself has been available since 1.1 (or eb240755386d)
raise error.Abort(("tags API of this hg command is unknown"))
# perf commands
@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)
svfs = getsvfs(repo)
repocleartagscache = repocleartagscachefunc(repo)
def t():
repo.changelog = mercurial.changelog.changelog(svfs)
repo.manifestlog = mercurial.manifest.manifestlog(svfs, repo)
repocleartagscache()
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('perfchangegroupchangelog', formatteropts +
[('', 'version', '02', 'changegroup version'),
('r', 'rev', '', 'revisions to add to changegroup')])
def perfchangegroupchangelog(ui, repo, version='02', rev=None, **opts):
"""Benchmark producing a changelog group for a changegroup.
This measures the time spent processing the changelog during a
bundle operation. This occurs during `hg bundle` and on a server
processing a `getbundle` wire protocol request (handles clones
and pull requests).
By default, all revisions are added to the changegroup.
"""
cl = repo.changelog
revs = [cl.lookup(r) for r in repo.revs(rev or 'all()')]
bundler = changegroup.getbundler(version, repo)
def lookup(node):
# The real bundler reads the revision in order to access the
# manifest node and files list. Do that here.
cl.read(node)
return node
def d():
for chunk in bundler.group(revs, cl, lookup):
pass
timer, fm = gettimer(ui, opts)
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.manifestlog.clearcaches()
repo.manifestlog[t].read()
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()
svfs = getsvfs(repo)
def d():
cl = mercurial.revlog.revlog(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 = getint(ui, "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(getsvfs(repo), "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)
tr.close()
lock.release()
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('perfbdiff', revlogopts + formatteropts + [
('', 'count', 1, 'number of revisions to test (when using --startrev)'),
('', 'alldata', False, 'test bdiffs for all associated revisions')],
'-c|-m|FILE REV')
def perfbdiff(ui, repo, file_, rev=None, count=None, **opts):
"""benchmark a bdiff between revisions
By default, benchmark a bdiff between its delta parent and itself.
With ``--count``, benchmark bdiffs between delta parents and self for N
revisions starting at the specified revision.
With ``--alldata``, assume the requested revision is a changeset and
measure bdiffs for all changes related to that changeset (manifest
and filelogs).
"""
if opts['alldata']:
opts['changelog'] = True
if opts.get('changelog') or opts.get('manifest'):
file_, rev = None, file_
elif rev is None:
raise error.CommandError('perfbdiff', 'invalid arguments')
textpairs = []
r = cmdutil.openrevlog(repo, 'perfbdiff', file_, opts)
startrev = r.rev(r.lookup(rev))
for rev in range(startrev, min(startrev + count, len(r) - 1)):
if opts['alldata']:
# Load revisions associated with changeset.
ctx = repo[rev]
mtext = repo.manifestlog._revlog.revision(ctx.manifestnode())
for pctx in ctx.parents():
pman = repo.manifestlog._revlog.revision(pctx.manifestnode())
textpairs.append((pman, mtext))
# Load filelog revisions by iterating manifest delta.
man = ctx.manifest()
pman = ctx.p1().manifest()
for filename, change in pman.diff(man).items():
fctx = repo.file(filename)
f1 = fctx.revision(change[0][0] or -1)
f2 = fctx.revision(change[1][0] or -1)
textpairs.append((f1, f2))
else:
dp = r.deltaparent(rev)
textpairs.append((r.revision(dp), r.revision(rev)))
def d():
for pair in textpairs:
bdiff.bdiff(*pair)
timer, fm = gettimer(ui, opts)
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'),
('', 'reverse', False, 'read in reverse')],
'-c|-m|FILE')
def perfrevlog(ui, repo, file_=None, startrev=0, reverse=False, **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)
_len = getlen(ui)
def d():
r = cmdutil.openrevlog(repo, 'perfrevlog', file_, opts)
startrev = 0
endrev = _len(r)
dist = opts['dist']
if reverse:
startrev, endrev = endrev, startrev
dist = -1 * dist
for x in xrange(startrev, endrev, dist):
r.revision(r.node(x))
timer(d)
fm.end()
@command('perfrevlogchunks', revlogopts + formatteropts +
[('e', 'engines', '', 'compression engines to use'),
('s', 'startrev', 0, 'revision to start at')],
'-c|-m|FILE')
def perfrevlogchunks(ui, repo, file_=None, engines=None, startrev=0, **opts):
"""Benchmark operations on revlog chunks.
Logically, each revlog is a collection of fulltext revisions. However,
stored within each revlog are "chunks" of possibly compressed data. This
data needs to be read and decompressed or compressed and written.
This command measures the time it takes to read+decompress and recompress
chunks in a revlog. It effectively isolates I/O and compression performance.
For measurements of higher-level operations like resolving revisions,
see ``perfrevlog`` and ``perfrevlogrevision``.
"""
rl = cmdutil.openrevlog(repo, 'perfrevlogchunks', file_, opts)
# Verify engines argument.
if engines:
engines = set(e.strip() for e in engines.split(','))
for engine in engines:
try:
util.compressionengines[engine]
except KeyError:
raise error.Abort('unknown compression engine: %s' % engine)
else:
engines = []
for e in util.compengines:
engine = util.compengines[e]
try:
if engine.available():
engine.revlogcompressor().compress('dummy')
engines.append(e)
except NotImplementedError:
pass
revs = list(rl.revs(startrev, len(rl) - 1))
def rlfh(rl):
if rl._inline:
return getsvfs(repo)(rl.indexfile)
else:
return getsvfs(repo)(rl.datafile)
def doread():
rl.clearcaches()
for rev in revs:
rl._chunkraw(rev, rev)
def doreadcachedfh():
rl.clearcaches()
fh = rlfh(rl)
for rev in revs:
rl._chunkraw(rev, rev, df=fh)
def doreadbatch():
rl.clearcaches()
rl._chunkraw(revs[0], revs[-1])
def doreadbatchcachedfh():
rl.clearcaches()
fh = rlfh(rl)
rl._chunkraw(revs[0], revs[-1], df=fh)
def dochunk():
rl.clearcaches()
fh = rlfh(rl)
for rev in revs:
rl._chunk(rev, df=fh)
chunks = [None]
def dochunkbatch():
rl.clearcaches()
fh = rlfh(rl)
# Save chunks as a side-effect.
chunks[0] = rl._chunks(revs, df=fh)
def docompress(compressor):
rl.clearcaches()
try:
# Swap in the requested compression engine.
oldcompressor = rl._compressor
rl._compressor = compressor
for chunk in chunks[0]:
rl.compress(chunk)
finally:
rl._compressor = oldcompressor
benches = [
(lambda: doread(), 'read'),
(lambda: doreadcachedfh(), 'read w/ reused fd'),
(lambda: doreadbatch(), 'read batch'),
(lambda: doreadbatchcachedfh(), 'read batch w/ reused fd'),
(lambda: dochunk(), 'chunk'),
(lambda: dochunkbatch(), 'chunk batch'),
]
for engine in sorted(engines):
compressor = util.compengines[engine].revlogcompressor()
benches.append((functools.partial(docompress, compressor),
'compress w/ %s' % engine))
for fn, title in benches:
timer, fm = gettimer(ui, opts)
timer(fn, title=title)
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 getrawchunks(data, chain):
start = r.start
length = r.length
inline = r._inline
iosize = r._io.size
buffer = util.buffer
offset = start(chain[0])
chunks = []
ladd = chunks.append
for rev in chain:
chunkstart = start(rev)
if inline:
chunkstart += (rev + 1) * iosize
chunklength = length(rev)
ladd(buffer(data, chunkstart - offset, chunklength))
return chunks
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 dorawchunks(data, chain):
if not cache:
r.clearcaches()
getrawchunks(data, chain)
def dodecompress(chunks):
decomp = r.decompress
for chunk in chunks:
decomp(chunk)
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=rev)
def dorevision():
if not cache:
r.clearcaches()
r.revision(node)
chain = r._deltachain(rev)[0]
data = r._chunkraw(chain[0], chain[-1])[1]
rawchunks = getrawchunks(data, chain)
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: dorawchunks(data, chain), 'rawchunks'),
(lambda: dodecompress(rawchunks), '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)
subsettable = getbranchmapsubsettable()
allfilters = []
while possiblefilters:
for name in possiblefilters:
subset = 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)
branchcacheread = safeattrsetter(branchmap, 'read')
branchcachewrite = safeattrsetter(branchmap.branchcache, 'write')
branchcacheread.set(lambda repo: None)
branchcachewrite.set(lambda bc, repo: None)
try:
for name in allfilters:
timer(getbranchmap(name), title=str(name))
finally:
branchcacheread.restore()
branchcachewrite.restore()
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)
svfs = getsvfs(repo)
timer(lambda: len(obsolete.obsstore(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()
@command('perfwrite', formatteropts)
def perfwrite(ui, repo, **opts):
"""microbenchmark ui.write
"""
timer, fm = gettimer(ui, opts)
def write():
for i in range(100000):
ui.write(('Testing write performance\n'))
timer(write)
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)