annotate contrib/hgperf @ 46113:59fa3890d40a

node: import symbols explicitly There is no point in lazy importing mercurial.node, it is used all over the place anyway. So consistently import the used symbols directly. Fix one file using symbols indirectly via mercurial.revlog. Differential Revision: https://phab.mercurial-scm.org/D9480
author Joerg Sonnenberger <joerg@bec.de>
date Tue, 01 Dec 2020 21:54:46 +0100
parents c102b704edb5
children d4ba4d51f85f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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c102b704edb5 global: use python3 in shebangs
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1 #!/usr/bin/env python3
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2 #
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3 # hgperf - measure performance of Mercurial commands
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4 #
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5 # Copyright 2014 Matt Mackall <mpm@selenic.com>
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6 #
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7 # This software may be used and distributed according to the terms of the
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8 # GNU General Public License version 2 or any later version.
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9
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10 '''measure performance of Mercurial commands
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11
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12 Using ``hgperf`` instead of ``hg`` measures performance of the target
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13 Mercurial command. For example, the execution below measures
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14 performance of :hg:`heads --topo`::
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15
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16 $ hgperf heads --topo
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17
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18 All command output via ``ui`` is suppressed, and just measurement
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19 result is displayed: see also "perf" extension in "contrib".
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20
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21 Costs of processing before dispatching to the command function like
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22 below are not measured::
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23
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24 - parsing command line (e.g. option validity check)
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25 - reading configuration files in
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26
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27 But ``pre-`` and ``post-`` hook invocation for the target command is
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28 measured, even though these are invoked before or after dispatching to
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29 the command function, because these may be required to repeat
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30 execution of the target command correctly.
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31 '''
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32
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33 import os
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34 import sys
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35
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36 libdir = '@LIBDIR@'
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37
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38 if libdir != '@' 'LIBDIR' '@':
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39 if not os.path.isabs(libdir):
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40 libdir = os.path.join(
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41 os.path.dirname(os.path.realpath(__file__)), libdir
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42 )
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43 libdir = os.path.abspath(libdir)
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44 sys.path.insert(0, libdir)
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45
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46 # enable importing on demand to reduce startup time
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47 try:
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48 from mercurial import demandimport
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49
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50 demandimport.enable()
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51 except ImportError:
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52 import sys
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53
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54 sys.stderr.write(
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55 "abort: couldn't find mercurial libraries in [%s]\n"
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56 % ' '.join(sys.path)
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57 )
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58 sys.stderr.write("(check your install and PYTHONPATH)\n")
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59 sys.exit(-1)
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60
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61 from mercurial import (
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62 dispatch,
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63 util,
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64 )
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65
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66
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67 def timer(func, title=None):
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68 results = []
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69 begin = util.timer()
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70 count = 0
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71 while True:
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72 ostart = os.times()
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73 cstart = util.timer()
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74 r = func()
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75 cstop = util.timer()
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76 ostop = os.times()
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77 count += 1
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78 a, b = ostart, ostop
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79 results.append((cstop - cstart, b[0] - a[0], b[1] - a[1]))
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80 if cstop - begin > 3 and count >= 100:
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81 break
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82 if cstop - begin > 10 and count >= 3:
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83 break
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84 if title:
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85 sys.stderr.write("! %s\n" % title)
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86 if r:
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87 sys.stderr.write("! result: %s\n" % r)
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88 m = min(results)
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89 sys.stderr.write(
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90 "! wall %f comb %f user %f sys %f (best of %d)\n"
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91 % (m[0], m[1] + m[2], m[1], m[2], count)
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92 )
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93
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95 orgruncommand = dispatch.runcommand
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96
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97
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98 def runcommand(lui, repo, cmd, fullargs, ui, options, d, cmdpats, cmdoptions):
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99 ui.pushbuffer()
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100 lui.pushbuffer()
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101 timer(
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102 lambda: orgruncommand(
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103 lui, repo, cmd, fullargs, ui, options, d, cmdpats, cmdoptions
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104 )
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105 )
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106 ui.popbuffer()
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107 lui.popbuffer()
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108
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110 dispatch.runcommand = runcommand
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111
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112 dispatch.run()