Mercurial > hg
annotate contrib/hgperf @ 36382:b4d1c09b754b
py3: add missing b'' in test-arbitraryfilectx.t
# skip-blame as just b'' prefix
author | Pulkit Goyal <7895pulkit@gmail.com> |
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date | Fri, 23 Feb 2018 18:12:20 +0530 |
parents | 163fa0aea71e |
children | 99e231afc29c |
rev | line source |
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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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96 |
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97 dispatch.run() |