annotate contrib/hgperf @ 39318:c03c5f528e9b

perf: use storage API for resolving manifest node lookup() isn't part of the storage API. And this code shouldn't be accessing manifestlog._revlog directly for the modern code base. So let's port it to the modern API. Note that the previous code was busted for cases where we needed to call lookup() because lookup() isn't exposed by manifestrevlog any more. This change is strictly BC breaking because we no longer support resolving partial nodes. But it is a perf* command and I don't think we should flag the change as such. Differential Revision: https://phab.mercurial-scm.org/D4390
author Gregory Szorc <gregory.szorc@gmail.com>
date Wed, 15 Aug 2018 19:45:39 +0000
parents 163fa0aea71e
children 99e231afc29c
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1 #!/usr/bin/env python
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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(os.path.dirname(os.path.realpath(__file__)),
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41 libdir)
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42 libdir = os.path.abspath(libdir)
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43 sys.path.insert(0, libdir)
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44
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45 # enable importing on demand to reduce startup time
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46 try:
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47 from mercurial import demandimport; demandimport.enable()
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48 except ImportError:
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49 import sys
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50 sys.stderr.write("abort: couldn't find mercurial libraries in [%s]\n" %
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51 ' '.join(sys.path))
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52 sys.stderr.write("(check your install and PYTHONPATH)\n")
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53 sys.exit(-1)
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54
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55 from mercurial import (
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56 dispatch,
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57 util,
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58 )
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59
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60 def timer(func, title=None):
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61 results = []
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62 begin = util.timer()
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63 count = 0
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64 while True:
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65 ostart = os.times()
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66 cstart = util.timer()
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67 r = func()
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68 cstop = util.timer()
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69 ostop = os.times()
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70 count += 1
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71 a, b = ostart, ostop
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72 results.append((cstop - cstart, b[0] - a[0], b[1]-a[1]))
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73 if cstop - begin > 3 and count >= 100:
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74 break
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75 if cstop - begin > 10 and count >= 3:
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76 break
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77 if title:
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78 sys.stderr.write("! %s\n" % title)
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79 if r:
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80 sys.stderr.write("! result: %s\n" % r)
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81 m = min(results)
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82 sys.stderr.write("! wall %f comb %f user %f sys %f (best of %d)\n"
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83 % (m[0], m[1] + m[2], m[1], m[2], count))
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84
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85 orgruncommand = dispatch.runcommand
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86
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87 def runcommand(lui, repo, cmd, fullargs, ui, options, d, cmdpats, cmdoptions):
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88 ui.pushbuffer()
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89 lui.pushbuffer()
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90 timer(lambda : orgruncommand(lui, repo, cmd, fullargs, ui,
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91 options, d, cmdpats, cmdoptions))
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92 ui.popbuffer()
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93 lui.popbuffer()
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94
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95 dispatch.runcommand = runcommand
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97 dispatch.run()