Mercurial > hg > mercurial-crew-with-dirclash

annotate mercurial/lsprof.py @ 5452:82b4ff3abbcd

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bdiff: tweaks for large files - adjust the common line threshold to .1% this speeds up a delta of 7M lines of source from 10m to 40s - adjust the scaling of the hash array down a bit as it was raising the peak memory usage significantly
author Matt Mackall <mpm@selenic.com>
date Thu, 11 Oct 2007 00:46:56 -0500
parents 976b6b2a1613
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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Vadim Gelfer <vadim.gelfer@gmail.com>
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1 # this is copied from the lsprof distro because somehow
6aa75e77cafe add --lsprof option. 3x faster than --profile, more useful output.
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2 # it is not installed by distutils
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3 #
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4 # small modifications made
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5
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6 import sys
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7 try:
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8 from _lsprof import Profiler, profiler_entry, profiler_subentry
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9 except ImportError, inst:
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10 import packagescan
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11 if packagescan.scan_in_progress:
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12 raise packagescan.SkipPackage('_lsprof not available')
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13 raise
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14
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15 __all__ = ['profile', 'Stats']
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16
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17 def profile(f, *args, **kwds):
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18 """XXX docstring"""
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19 p = Profiler()
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20 p.enable(subcalls=True)
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21 try:
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22 ret = f(*args, **kwds)
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23 finally:
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24 p.disable()
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25 return ret, Stats(p.getstats())
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26
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27
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28 class Stats(object):
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29 """XXX docstring"""
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30
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31 def __init__(self, data):
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32 self.data = data
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33
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34 def sort(self, crit="inlinetime"):
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35 """XXX docstring"""
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36 if crit not in profiler_entry.__dict__:
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37 raise ValueError, "Can't sort by %s" % crit
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38 self.data.sort(lambda b, a: cmp(getattr(a, crit),
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39 getattr(b, crit)))
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40 for e in self.data:
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41 if e.calls:
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42 e.calls.sort(lambda b, a: cmp(getattr(a, crit),
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43 getattr(b, crit)))
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44
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45 def pprint(self, top=None, file=None, limit=None, climit=None):
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46 """XXX docstring"""
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47 if file is None:
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48 file = sys.stdout
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49 d = self.data
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50 if top is not None:
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51 d = d[:top]
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52 cols = "% 12s %11.4f %11.4f %s\n"
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53 hcols = "% 12s %12s %12s %s\n"
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54 cols2 = "+%12s %11.4f %11.4f + %s\n"
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55 file.write(hcols % ("CallCount", "Total(s)",
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56 "Inline(s)", "module:lineno(function)"))
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57 count = 0
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58 for e in d:
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59 file.write(cols % (e.callcount, e.totaltime,
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60 e.inlinetime, label(e.code)))
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61 count += 1
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62 if limit is not None and count == limit:
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63 return
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64 ccount = 0
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65 if e.calls:
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66 for se in e.calls:
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67 file.write(cols % ("+%s" % se.callcount,
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68 se.totaltime, se.inlinetime,
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69 "+%s" % label(se.code)))
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70 count += 1
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71 ccount += 1
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72 if limit is not None and count == limit:
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73 return
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74 if climit is not None and ccount == climit:
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75 break
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76
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77 def freeze(self):
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78 """Replace all references to code objects with string
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79 descriptions; this makes it possible to pickle the instance."""
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80
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81 # this code is probably rather ickier than it needs to be!
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82 for i in range(len(self.data)):
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83 e = self.data[i]
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84 if not isinstance(e.code, str):
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85 self.data[i] = type(e)((label(e.code),) + e[1:])
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86 if e.calls:
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87 for j in range(len(e.calls)):
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88 se = e.calls[j]
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89 if not isinstance(se.code, str):
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90 e.calls[j] = type(se)((label(se.code),) + se[1:])
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91
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92 _fn2mod = {}
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93
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94 def label(code):
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95 if isinstance(code, str):
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96 return code
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97 try:
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98 mname = _fn2mod[code.co_filename]
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99 except KeyError:
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100 for k, v in sys.modules.iteritems():
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101 if v is None:
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102 continue
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103 if not hasattr(v, '__file__'):
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104 continue
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105 if not isinstance(v.__file__, str):
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106 continue
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107 if v.__file__.startswith(code.co_filename):
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108 mname = _fn2mod[code.co_filename] = k
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109 break
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110 else:
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111 mname = _fn2mod[code.co_filename] = '<%s>'%code.co_filename
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112
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113 return '%s:%d(%s)' % (mname, code.co_firstlineno, code.co_name)
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114
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115
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116 if __name__ == '__main__':
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117 import os
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118 sys.argv = sys.argv[1:]
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119 if not sys.argv:
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
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120 print >> sys.stderr, "usage: lsprof.py <script> <arguments...>"
6aa75e77cafe add --lsprof option. 3x faster than --profile, more useful output.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
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121 sys.exit(2)
6aa75e77cafe add --lsprof option. 3x faster than --profile, more useful output.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
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122 sys.path.insert(0, os.path.abspath(os.path.dirname(sys.argv[0])))
6aa75e77cafe add --lsprof option. 3x faster than --profile, more useful output.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
123 stats = profile(execfile, sys.argv[0], globals(), locals())
6aa75e77cafe add --lsprof option. 3x faster than --profile, more useful output.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
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124 stats.sort()
6aa75e77cafe add --lsprof option. 3x faster than --profile, more useful output.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
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125 stats.pprint()