author | Rishabh Madan <rishabhmadan96@gmail.com> |
Sun, 04 Jun 2017 00:16:45 +0200 | |
changeset 32779 | 2510823ca0df |
parent 30975 | 22fbca1d11ed |
child 33892 | 78f644fdaa2a |
permissions | -rwxr-xr-x |
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#!/usr/bin/env python |
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# |
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# hgperf - measure performance of Mercurial commands |
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# |
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# Copyright 2014 Matt Mackall <mpm@selenic.com> |
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# |
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# This software may be used and distributed according to the terms of the |
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# GNU General Public License version 2 or any later version. |
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'''measure performance of Mercurial commands |
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Using ``hgperf`` instead of ``hg`` measures performance of the target |
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Mercurial command. For example, the execution below measures |
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performance of :hg:`heads --topo`:: |
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$ hgperf heads --topo |
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All command output via ``ui`` is suppressed, and just measurement |
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result is displayed: see also "perf" extension in "contrib". |
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Costs of processing before dispatching to the command function like |
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below are not measured:: |
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- parsing command line (e.g. option validity check) |
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- reading configuration files in |
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But ``pre-`` and ``post-`` hook invocation for the target command is |
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measured, even though these are invoked before or after dispatching to |
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the command function, because these may be required to repeat |
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execution of the target command correctly. |
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''' |
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import os |
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import sys |
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libdir = '@LIBDIR@' |
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if libdir != '@' 'LIBDIR' '@': |
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if not os.path.isabs(libdir): |
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libdir = os.path.join(os.path.dirname(os.path.realpath(__file__)), |
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libdir) |
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libdir = os.path.abspath(libdir) |
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sys.path.insert(0, libdir) |
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# enable importing on demand to reduce startup time |
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try: |
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from mercurial import demandimport; demandimport.enable() |
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except ImportError: |
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import sys |
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sys.stderr.write("abort: couldn't find mercurial libraries in [%s]\n" % |
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' '.join(sys.path)) |
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sys.stderr.write("(check your install and PYTHONPATH)\n") |
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sys.exit(-1) |
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import mercurial.util |
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import mercurial.dispatch |
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def timer(func, title=None): |
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results = [] |
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begin = mercurial.util.timer() |
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count = 0 |
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while True: |
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ostart = os.times() |
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cstart = mercurial.util.timer() |
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r = func() |
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cstop = mercurial.util.timer() |
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ostop = os.times() |
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count += 1 |
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a, b = ostart, ostop |
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results.append((cstop - cstart, b[0] - a[0], b[1]-a[1])) |
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if cstop - begin > 3 and count >= 100: |
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break |
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if cstop - begin > 10 and count >= 3: |
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break |
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if title: |
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sys.stderr.write("! %s\n" % title) |
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if r: |
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sys.stderr.write("! result: %s\n" % r) |
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m = min(results) |
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sys.stderr.write("! wall %f comb %f user %f sys %f (best of %d)\n" |
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% (m[0], m[1] + m[2], m[1], m[2], count)) |
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orgruncommand = mercurial.dispatch.runcommand |
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def runcommand(lui, repo, cmd, fullargs, ui, options, d, cmdpats, cmdoptions): |
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ui.pushbuffer() |
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lui.pushbuffer() |
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timer(lambda : orgruncommand(lui, repo, cmd, fullargs, ui, |
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options, d, cmdpats, cmdoptions)) |
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ui.popbuffer() |
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lui.popbuffer() |
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mercurial.dispatch.runcommand = runcommand |
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for fp in (sys.stdin, sys.stdout, sys.stderr): |
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mercurial.util.setbinary(fp) |
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mercurial.dispatch.run() |