largefiles: drop unnecessary setting of matcher._always
In two very similar segments of code, an existing matcher is modified
by changing its _files attribute through a map and a filter
operation. Neither operation can cause an empty list to become
non-empty, so a matcher that always matches can not stop always
matching. Drop the setting of the attribute, so we don't unnecessarily
prevent the fast paths to be taken where these matchers end up being
used.
# perf.py - performance test routines
'''helper extension to measure performance'''
from mercurial import cmdutil, scmutil, util, commands, obsolete
from mercurial import repoview, branchmap, merge, copies
import time, os, sys
cmdtable = {}
command = cmdutil.command(cmdtable)
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))
@command('perfwalk')
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, {}))))
@command('perfannotate')
def perfannotate(ui, repo, f):
fc = repo['.'][f]
timer(lambda: len(fc.annotate(True)))
@command('perfstatus',
[('u', 'unknown', False,
'ask status to look for unknown files')])
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))))
@command('perfaddremove')
def perfaddremove(ui, repo):
try:
oldquiet = repo.ui.quiet
repo.ui.quiet = True
timer(lambda: scmutil.addremove(repo, dry_run=True))
finally:
repo.ui.quiet = oldquiet
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')
def perfheads(ui, repo):
cl = repo.changelog
def d():
len(cl.headrevs())
clearcaches(cl)
timer(d)
@command('perftags')
def perftags(ui, repo):
import mercurial.changelog
import 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)
@command('perfancestors')
def perfancestors(ui, repo):
heads = repo.changelog.headrevs()
def d():
for a in repo.changelog.ancestors(heads):
pass
timer(d)
@command('perfancestorset')
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)
@command('perfdirs')
def perfdirs(ui, repo):
dirstate = repo.dirstate
'a' in dirstate
def d():
dirstate.dirs()
del dirstate._dirs
timer(d)
@command('perfdirstate')
def perfdirstate(ui, repo):
"a" in repo.dirstate
def d():
repo.dirstate.invalidate()
"a" in repo.dirstate
timer(d)
@command('perfdirstatedirs')
def perfdirstatedirs(ui, repo):
"a" in repo.dirstate
def d():
"a" in repo.dirstate._dirs
del repo.dirstate._dirs
timer(d)
@command('perfdirstatefoldmap')
def perffoldmap(ui, repo):
dirstate = repo.dirstate
'a' in dirstate
def d():
dirstate._foldmap.get('a')
del dirstate._foldmap
del dirstate._dirs
timer(d)
@command('perfdirstatewrite')
def perfdirstatewrite(ui, repo):
ds = repo.dirstate
"a" in ds
def d():
ds._dirty = True
ds.write()
timer(d)
@command('perfmergecalculate',
[('r', 'rev', '.', 'rev to merge against')])
def perfmergecalculate(ui, repo, rev):
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, False,
acceptremote=True)
timer(d)
@command('perfpathcopies', [], "REV REV")
def perfpathcopies(ui, repo, rev1, rev2):
ctx1 = scmutil.revsingle(repo, rev1, rev1)
ctx2 = scmutil.revsingle(repo, rev2, rev2)
def d():
copies.pathcopies(ctx1, ctx2)
timer(d)
@command('perfmanifest', [], 'REV')
def perfmanifest(ui, repo, rev):
ctx = scmutil.revsingle(repo, rev, rev)
t = ctx.manifestnode()
def d():
repo.manifest._mancache.clear()
repo.manifest._cache = None
repo.manifest.read(t)
timer(d)
@command('perfchangeset')
def perfchangeset(ui, repo, rev):
n = repo[rev].node()
def d():
repo.changelog.read(n)
#repo.changelog._cache = None
timer(d)
@command('perfindex')
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)
@command('perfstartup')
def perfstartup(ui, repo):
cmd = sys.argv[0]
def d():
os.system("HGRCPATH= %s version -q > /dev/null" % cmd)
timer(d)
@command('perfparents')
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)
@command('perflookup')
def perflookup(ui, repo, rev):
timer(lambda: len(repo.lookup(rev)))
@command('perfrevrange')
def perfrevrange(ui, repo, *specs):
revrange = scmutil.revrange
timer(lambda: len(revrange(repo, specs)))
@command('perfnodelookup')
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)
@command('perflog',
[('', 'rename', False, 'ask log to follow renames')])
def perflog(ui, repo, **opts):
ui.pushbuffer()
timer(lambda: commands.log(ui, repo, rev=[], date='', user='',
copies=opts.get('rename')))
ui.popbuffer()
@command('perfmoonwalk')
def perfmoonwalk(ui, repo):
"""benchmark walking the changelog backwards
This also loads the changelog data for each revision in the changelog.
"""
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)
@command('perftemplating')
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()
@command('perfcca')
def perfcca(ui, repo):
timer(lambda: scmutil.casecollisionauditor(ui, False, repo.dirstate))
@command('perffncacheload')
def perffncacheload(ui, repo):
s = repo.store
def d():
s.fncache._load()
timer(d)
@command('perffncachewrite')
def perffncachewrite(ui, repo):
s = repo.store
s.fncache._load()
def d():
s.fncache._dirty = True
s.fncache.write()
timer(d)
@command('perffncacheencode')
def perffncacheencode(ui, repo):
s = repo.store
s.fncache._load()
def d():
for p in s.fncache.entries:
s.encode(p)
timer(d)
@command('perfdiffwd')
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)
@command('perfrevlog',
[('d', 'dist', 100, 'distance between the revisions')],
"[INDEXFILE]")
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)
@command('perfrevset',
[('C', 'clear', False, 'clear volatile cache between each call.')],
"REVSET")
def perfrevset(ui, repo, expr, clear=False):
"""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."""
def d():
if clear:
repo.invalidatevolatilesets()
for r in repo.revs(expr): pass
timer(d)
@command('perfvolatilesets')
def perfvolatilesets(ui, repo, *names):
"""benchmark the computation of various volatile set
Volatile set computes element related to filtering and obsolescence."""
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)
@command('perfbranchmap',
[('f', 'full', False,
'Includes build time of subset'),
])
def perfbranchmap(ui, repo, full=False):
"""benchmark the update of a branchmap
This benchmarks the full repo.branchmap() call with read and write disabled
"""
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