Mercurial > hg
annotate contrib/revsetbenchmarks.py @ 51433:d36a81d70f25
chainsaw-update: taking care of initial cloning
Perhaps we should go just a bit lower level than this `instance()`,
since the main added value in our use-case is full path resolution,
that we need to do anyway for the rmtree cleanup.
author | Georges Racinet <georges.racinet@octobus.net> |
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date | Fri, 23 Feb 2024 11:41:55 +0100 |
parents | 6000f5b25c9b |
children | 493034cc3265 |
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1 #!/usr/bin/env python3 |
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2 |
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3 # Measure the performance of a list of revsets against multiple revisions |
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4 # defined by parameter. Checkout one by one and run perfrevset with every |
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5 # revset in the list to benchmark its performance. |
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6 # |
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7 # You should run this from the root of your mercurial repository. |
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8 # |
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9 # call with --help for details |
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10 |
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11 import math |
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12 import optparse # cannot use argparse, python 2.7 only |
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13 import os |
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14 import re |
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15 import subprocess |
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16 import sys |
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17 |
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18 DEFAULTVARIANTS = [ |
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19 'plain', |
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20 'min', |
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21 'max', |
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22 'first', |
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23 'last', |
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24 'reverse', |
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25 'reverse+first', |
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26 'reverse+last', |
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27 'sort', |
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28 'sort+first', |
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29 'sort+last', |
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30 ] |
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31 |
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32 |
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33 def check_output(*args, **kwargs): |
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34 kwargs.setdefault('stderr', subprocess.PIPE) |
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35 kwargs.setdefault('stdout', subprocess.PIPE) |
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36 proc = subprocess.Popen(*args, **kwargs) |
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37 output, error = proc.communicate() |
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38 if proc.returncode != 0: |
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39 raise subprocess.CalledProcessError(proc.returncode, ' '.join(args[0])) |
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40 return output |
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41 |
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42 |
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43 def update(rev): |
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44 """update the repo to a revision""" |
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45 try: |
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46 subprocess.check_call(['hg', 'update', '--quiet', '--check', str(rev)]) |
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47 check_output( |
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48 ['make', 'local'], stderr=None |
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49 ) # suppress output except for error/warning |
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50 except subprocess.CalledProcessError as exc: |
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51 print('update to revision %s failed, aborting' % rev, file=sys.stderr) |
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52 sys.exit(exc.returncode) |
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53 |
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54 |
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55 def hg(cmd, repo=None): |
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56 """run a mercurial command |
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57 |
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58 <cmd> is the list of command + argument, |
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59 <repo> is an optional repository path to run this command in.""" |
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60 fullcmd = ['./hg'] |
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61 if repo is not None: |
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62 fullcmd += ['-R', repo] |
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63 fullcmd += [ |
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64 '--config', |
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65 'extensions.perf=' + os.path.join(contribdir, 'perf.py'), |
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66 ] |
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67 fullcmd += cmd |
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68 return check_output(fullcmd, stderr=subprocess.STDOUT) |
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69 |
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70 |
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71 def perf(revset, target=None, contexts=False): |
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72 """run benchmark for this very revset""" |
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73 try: |
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74 args = ['perfrevset'] |
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75 if contexts: |
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76 args.append('--contexts') |
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77 args.append('--') |
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78 args.append(revset) |
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79 output = hg(args, repo=target) |
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80 return parseoutput(output) |
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81 except subprocess.CalledProcessError as exc: |
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82 print( |
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83 'abort: cannot run revset benchmark: %s' % exc.cmd, file=sys.stderr |
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84 ) |
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85 if getattr(exc, 'output', None) is None: # no output before 2.7 |
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86 print('(no output)', file=sys.stderr) |
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87 else: |
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88 print(exc.output, file=sys.stderr) |
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89 return None |
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90 |
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91 |
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92 outputre = re.compile( |
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93 br'! wall (\d+.\d+) comb (\d+.\d+) user (\d+.\d+) ' |
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94 br'sys (\d+.\d+) \(best of (\d+)\)' |
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95 ) |
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96 |
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97 |
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98 def parseoutput(output): |
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99 """parse a textual output into a dict |
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100 |
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101 We cannot just use json because we want to compare with old |
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102 versions of Mercurial that may not support json output. |
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103 """ |
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104 match = outputre.search(output) |
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105 if not match: |
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106 print('abort: invalid output:', file=sys.stderr) |
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107 print(output, file=sys.stderr) |
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108 sys.exit(1) |
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109 return { |
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110 'comb': float(match.group(2)), |
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111 'count': int(match.group(5)), |
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112 'sys': float(match.group(3)), |
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113 'user': float(match.group(4)), |
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114 'wall': float(match.group(1)), |
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115 } |
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116 |
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117 |
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118 def printrevision(rev): |
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119 """print data about a revision""" |
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120 sys.stdout.write("Revision ") |
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121 sys.stdout.flush() |
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122 subprocess.check_call( |
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123 [ |
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124 'hg', |
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125 'log', |
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126 '--rev', |
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127 str(rev), |
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128 '--template', |
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129 '{if(tags, " ({tags})")} ' '{rev}:{node|short}: {desc|firstline}\n', |
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130 ] |
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131 ) |
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132 |
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133 |
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134 def idxwidth(nbidx): |
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135 """return the max width of number used for index |
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136 |
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137 This is similar to log10(nbidx), but we use custom code here |
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138 because we start with zero and we'd rather not deal with all the |
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139 extra rounding business that log10 would imply. |
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140 """ |
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141 nbidx -= 1 # starts at 0 |
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142 idxwidth = 0 |
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143 while nbidx: |
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144 idxwidth += 1 |
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145 nbidx //= 10 |
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146 if not idxwidth: |
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147 idxwidth = 1 |
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148 return idxwidth |
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149 |
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150 |
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151 def getfactor(main, other, field, sensitivity=0.05): |
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152 """return the relative factor between values for 'field' in main and other |
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153 |
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154 Return None if the factor is insignificant (less than <sensitivity> |
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155 variation).""" |
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156 factor = 1 |
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157 if main is not None: |
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158 factor = other[field] / main[field] |
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159 low, high = 1 - sensitivity, 1 + sensitivity |
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160 if low < factor < high: |
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161 return None |
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162 return factor |
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163 |
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164 |
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165 def formatfactor(factor): |
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166 """format a factor into a 4 char string |
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167 |
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168 22% |
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169 156% |
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170 x2.4 |
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171 x23 |
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172 x789 |
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173 x1e4 |
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174 x5x7 |
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175 |
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176 """ |
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177 if factor is None: |
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178 return ' ' |
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179 elif factor < 2: |
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180 return '%3i%%' % (factor * 100) |
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181 elif factor < 10: |
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182 return 'x%3.1f' % factor |
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183 elif factor < 1000: |
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184 return '%4s' % ('x%i' % factor) |
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185 else: |
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186 order = int(math.log(factor)) + 1 |
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187 while math.log(factor) > 1: |
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188 factor //= 0 |
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189 return 'x%ix%i' % (factor, order) |
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190 |
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191 |
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192 def formattiming(value): |
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193 """format a value to strictly 8 char, dropping some precision if needed""" |
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194 if value < 10 ** 7: |
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195 return ('%.6f' % value)[:8] |
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196 else: |
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197 # value is HUGE very unlikely to happen (4+ month run) |
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198 return '%i' % value |
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199 |
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200 |
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201 _marker = object() |
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202 |
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203 |
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204 def printresult(variants, idx, data, maxidx, verbose=False, reference=_marker): |
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205 """print a line of result to stdout""" |
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206 mask = '%%0%ii) %%s' % idxwidth(maxidx) |
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207 |
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208 out = [] |
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209 for var in variants: |
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210 if data[var] is None: |
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211 out.append('error ') |
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212 out.append(' ' * 4) |
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213 continue |
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214 out.append(formattiming(data[var]['wall'])) |
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215 if reference is not _marker: |
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216 factor = None |
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217 if reference is not None: |
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218 factor = getfactor(reference[var], data[var], 'wall') |
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219 out.append(formatfactor(factor)) |
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220 if verbose: |
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221 out.append(formattiming(data[var]['comb'])) |
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222 out.append(formattiming(data[var]['user'])) |
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223 out.append(formattiming(data[var]['sys'])) |
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224 out.append('%6d' % data[var]['count']) |
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225 print(mask % (idx, ' '.join(out))) |
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226 |
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227 |
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228 def printheader(variants, maxidx, verbose=False, relative=False): |
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229 header = [' ' * (idxwidth(maxidx) + 1)] |
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230 for var in variants: |
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231 if not var: |
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232 var = 'iter' |
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233 if len(var) > 8: |
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234 var = var[:3] + '..' + var[-3:] |
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235 header.append('%-8s' % var) |
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236 if relative: |
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237 header.append(' ') |
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238 if verbose: |
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239 header.append('%-8s' % 'comb') |
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240 header.append('%-8s' % 'user') |
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241 header.append('%-8s' % 'sys') |
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242 header.append('%6s' % 'count') |
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243 print(' '.join(header)) |
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244 |
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245 |
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246 def getrevs(spec): |
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247 """get the list of rev matched by a revset""" |
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248 try: |
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249 out = check_output(['hg', 'log', '--template={rev}\n', '--rev', spec]) |
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250 except subprocess.CalledProcessError as exc: |
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251 print("abort, can't get revision from %s" % spec, file=sys.stderr) |
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252 sys.exit(exc.returncode) |
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253 return [r for r in out.split() if r] |
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254 |
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255 |
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256 def applyvariants(revset, variant): |
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257 if variant == 'plain': |
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258 return revset |
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259 for var in variant.split('+'): |
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260 revset = '%s(%s)' % (var, revset) |
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261 return revset |
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262 |
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263 |
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264 helptext = """This script will run multiple variants of provided revsets using |
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265 different revisions in your mercurial repository. After the benchmark are run |
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266 summary output is provided. Use it to demonstrate speed improvements or pin |
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267 point regressions. Revsets to run are specified in a file (or from stdin), one |
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268 revsets per line. Line starting with '#' will be ignored, allowing insertion of |
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269 comments.""" |
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270 parser = optparse.OptionParser( |
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271 usage="usage: %prog [options] <revs>", description=helptext |
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272 ) |
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273 parser.add_option( |
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274 "-f", |
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275 "--file", |
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276 help="read revset from FILE (stdin if omitted)", |
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277 metavar="FILE", |
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278 ) |
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279 parser.add_option("-R", "--repo", help="run benchmark on REPO", metavar="REPO") |
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280 |
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281 parser.add_option( |
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282 "-v", |
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283 "--verbose", |
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284 action='store_true', |
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285 help="display all timing data (not just best total time)", |
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286 ) |
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287 |
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288 parser.add_option( |
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289 "", |
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290 "--variants", |
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291 default=','.join(DEFAULTVARIANTS), |
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292 help="comma separated list of variant to test " |
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293 "(eg: plain,min,sorted) (plain = no modification)", |
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294 ) |
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295 parser.add_option( |
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296 '', |
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297 '--contexts', |
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298 action='store_true', |
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299 help='obtain changectx from results instead of integer revs', |
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300 ) |
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301 |
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302 (options, args) = parser.parse_args() |
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303 |
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304 if not args: |
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305 parser.print_help() |
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306 sys.exit(255) |
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307 |
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308 # the directory where both this script and the perf.py extension live. |
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309 contribdir = os.path.dirname(__file__) |
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310 |
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311 revsetsfile = sys.stdin |
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312 if options.file: |
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313 revsetsfile = open(options.file) |
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314 |
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315 revsets = [l.strip() for l in revsetsfile if not l.startswith('#')] |
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316 revsets = [l for l in revsets if l] |
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317 |
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318 print("Revsets to benchmark") |
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319 print("----------------------------") |
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320 |
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321 for idx, rset in enumerate(revsets): |
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322 print("%i) %s" % (idx, rset)) |
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323 |
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324 print("----------------------------") |
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325 print() |
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326 |
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327 revs = [] |
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328 for a in args: |
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329 revs.extend(getrevs(a)) |
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330 |
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331 variants = options.variants.split(',') |
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332 |
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333 results = [] |
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334 for r in revs: |
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335 print("----------------------------") |
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336 printrevision(r) |
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337 print("----------------------------") |
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338 update(r) |
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339 res = [] |
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340 results.append(res) |
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341 printheader(variants, len(revsets), verbose=options.verbose) |
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342 for idx, rset in enumerate(revsets): |
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343 varres = {} |
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344 for var in variants: |
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345 varrset = applyvariants(rset, var) |
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346 data = perf(varrset, target=options.repo, contexts=options.contexts) |
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347 varres[var] = data |
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348 res.append(varres) |
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349 printresult( |
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350 variants, idx, varres, len(revsets), verbose=options.verbose |
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351 ) |
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352 sys.stdout.flush() |
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353 print("----------------------------") |
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354 |
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355 |
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356 print( |
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357 """ |
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358 |
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359 Result by revset |
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360 ================ |
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361 """ |
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362 ) |
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363 |
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364 print('Revision:') |
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365 for idx, rev in enumerate(revs): |
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366 sys.stdout.write('%i) ' % idx) |
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367 sys.stdout.flush() |
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368 printrevision(rev) |
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369 |
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370 print() |
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371 print() |
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372 |
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373 for ridx, rset in enumerate(revsets): |
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374 |
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375 print("revset #%i: %s" % (ridx, rset)) |
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376 printheader(variants, len(results), verbose=options.verbose, relative=True) |
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377 ref = None |
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378 for idx, data in enumerate(results): |
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379 printresult( |
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380 variants, |
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381 idx, |
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382 data[ridx], |
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383 len(results), |
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384 verbose=options.verbose, |
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385 reference=ref, |
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386 ) |
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387 ref = data[ridx] |
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388 print() |