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annotate contrib/perf.py @ 16785:1dc08dc63c09

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perf: rework perfheads and perftags to clear caches The cache clearing makes numbers more reproducible.
author Bryan O'Sullivan <bryano@fb.com>
date Sat, 19 May 2012 19:44:23 -0700
parents f366d4c2ff34
children 7e72c1609862
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1 # perf.py - performance test routines
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2 '''helper extension to measure performance'''
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3
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4 from mercurial import cmdutil, scmutil, util, match, commands
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5 import time, os, sys
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6
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7 def timer(func, title=None):
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8 results = []
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9 begin = time.time()
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10 count = 0
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11 while True:
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12 ostart = os.times()
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13 cstart = time.time()
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14 r = func()
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15 cstop = time.time()
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16 ostop = os.times()
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17 count += 1
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18 a, b = ostart, ostop
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19 results.append((cstop - cstart, b[0] - a[0], b[1]-a[1]))
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20 if cstop - begin > 3 and count >= 100:
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21 break
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22 if cstop - begin > 10 and count >= 3:
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23 break
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24 if title:
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25 sys.stderr.write("! %s\n" % title)
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26 if r:
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27 sys.stderr.write("! result: %s\n" % r)
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28 m = min(results)
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29 sys.stderr.write("! wall %f comb %f user %f sys %f (best of %d)\n"
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30 % (m[0], m[1] + m[2], m[1], m[2], count))
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31
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32 def perfwalk(ui, repo, *pats):
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33 try:
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34 m = scmutil.match(repo[None], pats, {})
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35 timer(lambda: len(list(repo.dirstate.walk(m, [], True, False))))
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36 except Exception:
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37 try:
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38 m = scmutil.match(repo[None], pats, {})
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39 timer(lambda: len([b for a, b, c in repo.dirstate.statwalk([], m)]))
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40 except Exception:
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41 timer(lambda: len(list(cmdutil.walk(repo, pats, {}))))
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42
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43 def perfstatus(ui, repo, *pats):
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44 #m = match.always(repo.root, repo.getcwd())
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45 #timer(lambda: sum(map(len, repo.dirstate.status(m, [], False, False,
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46 # False))))
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47 timer(lambda: sum(map(len, repo.status())))
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48
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49 def clearcaches(cl):
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50 # behave somewhat consistently across internal API changes
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51 if util.safehasattr(cl, 'clearcaches'):
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52 cl.clearcaches()
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53 elif util.safehasattr(cl, '_nodecache'):
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54 from mercurial.node import nullid, nullrev
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55 cl._nodecache = {nullid: nullrev}
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56 cl._nodepos = None
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57
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58 def perfheads(ui, repo):
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59 cl = repo.changelog
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60 def d():
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61 len(cl.headrevs())
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62 clearcaches(cl)
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63 timer(d)
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64
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65 def perftags(ui, repo):
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66 import mercurial.changelog, mercurial.manifest
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67 def t():
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68 repo.changelog = mercurial.changelog.changelog(repo.sopener)
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69 repo.manifest = mercurial.manifest.manifest(repo.sopener)
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70 repo._tags = None
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71 return len(repo.tags())
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72 timer(t)
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73
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74 def perfdirstate(ui, repo):
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75 "a" in repo.dirstate
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76 def d():
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77 repo.dirstate.invalidate()
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78 "a" in repo.dirstate
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79 timer(d)
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80
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81 def perfdirstatedirs(ui, repo):
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82 "a" in repo.dirstate
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83 def d():
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84 "a" in repo.dirstate._dirs
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85 del repo.dirstate._dirs
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86 timer(d)
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87
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88 def perfmanifest(ui, repo):
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89 def d():
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90 t = repo.manifest.tip()
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91 m = repo.manifest.read(t)
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92 repo.manifest.mapcache = None
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93 repo.manifest._cache = None
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94 timer(d)
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95
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96 def perfchangeset(ui, repo, rev):
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97 n = repo[rev].node()
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98 def d():
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99 c = repo.changelog.read(n)
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100 #repo.changelog._cache = None
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101 timer(d)
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102
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103 def perfindex(ui, repo):
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104 import mercurial.revlog
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105 mercurial.revlog._prereadsize = 2**24 # disable lazy parser in old hg
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106 n = repo["tip"].node()
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107 def d():
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108 cl = mercurial.revlog.revlog(repo.sopener, "00changelog.i")
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109 cl.rev(n)
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110 timer(d)
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111
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112 def perfstartup(ui, repo):
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113 cmd = sys.argv[0]
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114 def d():
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115 os.system("HGRCPATH= %s version -q > /dev/null" % cmd)
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116 timer(d)
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117
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118 def perfparents(ui, repo):
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119 nl = [repo.changelog.node(i) for i in xrange(1000)]
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120 def d():
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121 for n in nl:
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122 repo.changelog.parents(n)
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123 timer(d)
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124
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125 def perflookup(ui, repo, rev):
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126 timer(lambda: len(repo.lookup(rev)))
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127
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128 def perfnodelookup(ui, repo, rev):
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129 import mercurial.revlog
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130 mercurial.revlog._prereadsize = 2**24 # disable lazy parser in old hg
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131 n = repo[rev].node()
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132 def d():
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133 cl = mercurial.revlog.revlog(repo.sopener, "00changelog.i")
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134 cl.rev(n)
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135 timer(d)
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136
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137 def perfnodelookup(ui, repo, rev):
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138 import mercurial.revlog
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139 mercurial.revlog._prereadsize = 2**24 # disable lazy parser in old hg
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140 n = repo[rev].node()
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141 cl = mercurial.revlog.revlog(repo.sopener, "00changelog.i")
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142 def d():
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143 cl.rev(n)
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144 clearcaches(cl)
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145 timer(d)
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146
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147 def perflog(ui, repo, **opts):
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148 ui.pushbuffer()
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149 timer(lambda: commands.log(ui, repo, rev=[], date='', user='',
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150 copies=opts.get('rename')))
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151 ui.popbuffer()
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152
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153 def perftemplating(ui, repo):
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154 ui.pushbuffer()
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155 timer(lambda: commands.log(ui, repo, rev=[], date='', user='',
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156 template='{date|shortdate} [{rev}:{node|short}]'
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157 ' {author|person}: {desc|firstline}\n'))
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158 ui.popbuffer()
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159
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160 def perfcca(ui, repo):
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161 timer(lambda: scmutil.casecollisionauditor(ui, False, repo[None]))
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162
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163 def perffncacheload(ui, repo):
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164 from mercurial import scmutil, store
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165 s = store.store(set(['store','fncache']), repo.path, scmutil.opener)
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166 def d():
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167 s.fncache._load()
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168 timer(d)
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169
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170 def perffncachewrite(ui, repo):
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171 from mercurial import scmutil, store
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172 s = store.store(set(['store','fncache']), repo.path, scmutil.opener)
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173 s.fncache._load()
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174 def d():
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175 s.fncache._dirty = True
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176 s.fncache.write()
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177 timer(d)
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178
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179 def perfdiffwd(ui, repo):
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180 """Profile diff of working directory changes"""
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181 options = {
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182 'w': 'ignore_all_space',
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183 'b': 'ignore_space_change',
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184 'B': 'ignore_blank_lines',
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185 }
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186
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187 for diffopt in ('', 'w', 'b', 'B', 'wB'):
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188 opts = dict((options[c], '1') for c in diffopt)
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189 def d():
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190 ui.pushbuffer()
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191 commands.diff(ui, repo, **opts)
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192 ui.popbuffer()
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193 title = 'diffopts: %s' % (diffopt and ('-' + diffopt) or 'none')
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194 timer(d, title)
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195
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196 def perfrevlog(ui, repo, file_, **opts):
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197 from mercurial import revlog
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198 dist = opts['dist']
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199 def d():
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200 r = revlog.revlog(lambda fn: open(fn, 'rb'), file_)
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201 for x in xrange(0, len(r), dist):
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202 r.revision(r.node(x))
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203
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204 timer(d)
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205
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206 cmdtable = {
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207 'perfcca': (perfcca, []),
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208 'perffncacheload': (perffncacheload, []),
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209 'perffncachewrite': (perffncachewrite, []),
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210 'perflookup': (perflookup, []),
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211 'perfnodelookup': (perfnodelookup, []),
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212 'perfparents': (perfparents, []),
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213 'perfstartup': (perfstartup, []),
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214 'perfstatus': (perfstatus, []),
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215 'perfwalk': (perfwalk, []),
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216 'perfmanifest': (perfmanifest, []),
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217 'perfchangeset': (perfchangeset, []),
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218 'perfindex': (perfindex, []),
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219 'perfheads': (perfheads, []),
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220 'perftags': (perftags, []),
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221 'perfdirstate': (perfdirstate, []),
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222 'perfdirstatedirs': (perfdirstate, []),
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223 'perflog': (perflog,
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224 [('', 'rename', False, 'ask log to follow renames')]),
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225 'perftemplating': (perftemplating, []),
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226 'perfdiffwd': (perfdiffwd, []),
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227 'perfrevlog': (perfrevlog,
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228 [('d', 'dist', 100, 'distance between the revisions')],
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229 "[INDEXFILE]"),
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230 }