Mercurial > hg
annotate contrib/hgperf @ 33539:460733327640
share: share 'cachevfs' with the source clone (issue5108)
Share extension now also share caches reads and writes. Not sharing caches
results in costly caches recomputations which can takes up to minutes when
using shares on large repositories.
There are a couple of file in the '.hg/cache/' that depends of the current
visibility. Visibility can be affected by the working copy location, something
which is specific to each share. We ignores them for this series because they:
* are the minority,
* already have a good fallback to other precomputed caches,
* are only affected when people use the experimental evolution feature.
author | Boris Feld <boris.feld@octobus.net> |
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date | Sat, 15 Jul 2017 23:49:22 +0200 |
parents | 22fbca1d11ed |
children | 78f644fdaa2a |
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 import mercurial.util |
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56 import mercurial.dispatch |
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57 |
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58 def timer(func, title=None): |
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59 results = [] |
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60 begin = mercurial.util.timer() |
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61 count = 0 |
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62 while True: |
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63 ostart = os.times() |
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64 cstart = mercurial.util.timer() |
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65 r = func() |
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66 cstop = mercurial.util.timer() |
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67 ostop = os.times() |
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68 count += 1 |
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69 a, b = ostart, ostop |
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70 results.append((cstop - cstart, b[0] - a[0], b[1]-a[1])) |
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71 if cstop - begin > 3 and count >= 100: |
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72 break |
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73 if cstop - begin > 10 and count >= 3: |
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74 break |
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75 if title: |
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76 sys.stderr.write("! %s\n" % title) |
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77 if r: |
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78 sys.stderr.write("! result: %s\n" % r) |
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79 m = min(results) |
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80 sys.stderr.write("! wall %f comb %f user %f sys %f (best of %d)\n" |
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81 % (m[0], m[1] + m[2], m[1], m[2], count)) |
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82 |
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83 orgruncommand = mercurial.dispatch.runcommand |
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84 |
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85 def runcommand(lui, repo, cmd, fullargs, ui, options, d, cmdpats, cmdoptions): |
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86 ui.pushbuffer() |
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87 lui.pushbuffer() |
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88 timer(lambda : orgruncommand(lui, repo, cmd, fullargs, ui, |
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89 options, d, cmdpats, cmdoptions)) |
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90 ui.popbuffer() |
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91 lui.popbuffer() |
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92 |
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93 mercurial.dispatch.runcommand = runcommand |
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94 |
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95 for fp in (sys.stdin, sys.stdout, sys.stderr): |
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96 mercurial.util.setbinary(fp) |
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97 |
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98 mercurial.dispatch.run() |