root / test / py / lockperf.py @ cd3b4ff4
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1 | e4d452b4 | Michael Hanselmann | #!/usr/bin/python
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2 | e4d452b4 | Michael Hanselmann | #
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3 | e4d452b4 | Michael Hanselmann | |
4 | e4d452b4 | Michael Hanselmann | # Copyright (C) 2011 Google Inc.
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5 | e4d452b4 | Michael Hanselmann | #
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6 | e4d452b4 | Michael Hanselmann | # This program is free software; you can redistribute it and/or modify
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7 | e4d452b4 | Michael Hanselmann | # it under the terms of the GNU General Public License as published by
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8 | e4d452b4 | Michael Hanselmann | # the Free Software Foundation; either version 2 of the License, or
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9 | e4d452b4 | Michael Hanselmann | # (at your option) any later version.
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10 | e4d452b4 | Michael Hanselmann | #
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11 | e4d452b4 | Michael Hanselmann | # This program is distributed in the hope that it will be useful, but
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12 | e4d452b4 | Michael Hanselmann | # WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | e4d452b4 | Michael Hanselmann | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | e4d452b4 | Michael Hanselmann | # General Public License for more details.
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15 | e4d452b4 | Michael Hanselmann | #
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16 | e4d452b4 | Michael Hanselmann | # You should have received a copy of the GNU General Public License
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17 | e4d452b4 | Michael Hanselmann | # along with this program; if not, write to the Free Software
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18 | e4d452b4 | Michael Hanselmann | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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19 | e4d452b4 | Michael Hanselmann | # 02110-1301, USA.
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20 | e4d452b4 | Michael Hanselmann | |
21 | e4d452b4 | Michael Hanselmann | |
22 | e4d452b4 | Michael Hanselmann | """Script for testing lock performance"""
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23 | e4d452b4 | Michael Hanselmann | |
24 | e4d452b4 | Michael Hanselmann | import os |
25 | e4d452b4 | Michael Hanselmann | import sys |
26 | e4d452b4 | Michael Hanselmann | import time |
27 | e4d452b4 | Michael Hanselmann | import optparse |
28 | e4d452b4 | Michael Hanselmann | import threading |
29 | e4d452b4 | Michael Hanselmann | import resource |
30 | e4d452b4 | Michael Hanselmann | |
31 | e4d452b4 | Michael Hanselmann | from ganeti import locking |
32 | e4d452b4 | Michael Hanselmann | |
33 | e4d452b4 | Michael Hanselmann | |
34 | e4d452b4 | Michael Hanselmann | def ParseOptions(): |
35 | e4d452b4 | Michael Hanselmann | """Parses the command line options.
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36 | e4d452b4 | Michael Hanselmann |
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37 | e4d452b4 | Michael Hanselmann | In case of command line errors, it will show the usage and exit the
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38 | e4d452b4 | Michael Hanselmann | program.
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39 | e4d452b4 | Michael Hanselmann |
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40 | e4d452b4 | Michael Hanselmann | @return: the options in a tuple
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41 | e4d452b4 | Michael Hanselmann |
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42 | e4d452b4 | Michael Hanselmann | """
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43 | e4d452b4 | Michael Hanselmann | parser = optparse.OptionParser() |
44 | e4d452b4 | Michael Hanselmann | parser.add_option("-t", dest="thread_count", default=1, type="int", |
45 | e4d452b4 | Michael Hanselmann | help="Number of threads", metavar="NUM") |
46 | e4d452b4 | Michael Hanselmann | parser.add_option("-d", dest="duration", default=5, type="float", |
47 | e4d452b4 | Michael Hanselmann | help="Duration", metavar="SECS") |
48 | e4d452b4 | Michael Hanselmann | |
49 | e4d452b4 | Michael Hanselmann | (opts, args) = parser.parse_args() |
50 | e4d452b4 | Michael Hanselmann | |
51 | e4d452b4 | Michael Hanselmann | if opts.thread_count < 1: |
52 | e4d452b4 | Michael Hanselmann | parser.error("Number of threads must be at least 1")
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53 | e4d452b4 | Michael Hanselmann | |
54 | e4d452b4 | Michael Hanselmann | return (opts, args)
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55 | e4d452b4 | Michael Hanselmann | |
56 | e4d452b4 | Michael Hanselmann | |
57 | e4d452b4 | Michael Hanselmann | class State: |
58 | e4d452b4 | Michael Hanselmann | def __init__(self, thread_count): |
59 | e4d452b4 | Michael Hanselmann | """Initializes this class.
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60 | e4d452b4 | Michael Hanselmann |
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61 | e4d452b4 | Michael Hanselmann | """
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62 | fc4498e9 | Michael Hanselmann | self.verify = [0 for _ in range(thread_count)] |
63 | e4d452b4 | Michael Hanselmann | self.counts = [0 for _ in range(thread_count)] |
64 | e4d452b4 | Michael Hanselmann | self.total_count = 0 |
65 | e4d452b4 | Michael Hanselmann | |
66 | e4d452b4 | Michael Hanselmann | |
67 | e4d452b4 | Michael Hanselmann | def _Counter(lock, state, me): |
68 | e4d452b4 | Michael Hanselmann | """Thread function for acquiring locks.
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69 | e4d452b4 | Michael Hanselmann |
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70 | e4d452b4 | Michael Hanselmann | """
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71 | e4d452b4 | Michael Hanselmann | counts = state.counts |
72 | e4d452b4 | Michael Hanselmann | verify = state.verify |
73 | e4d452b4 | Michael Hanselmann | |
74 | e4d452b4 | Michael Hanselmann | while True: |
75 | e4d452b4 | Michael Hanselmann | lock.acquire() |
76 | e4d452b4 | Michael Hanselmann | try:
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77 | e4d452b4 | Michael Hanselmann | verify[me] = 1
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78 | e4d452b4 | Michael Hanselmann | |
79 | e4d452b4 | Michael Hanselmann | counts[me] += 1
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80 | e4d452b4 | Michael Hanselmann | |
81 | e4d452b4 | Michael Hanselmann | state.total_count += 1
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82 | e4d452b4 | Michael Hanselmann | |
83 | e4d452b4 | Michael Hanselmann | if state.total_count % 1000 == 0: |
84 | e4d452b4 | Michael Hanselmann | sys.stdout.write(" %8d\r" % state.total_count)
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85 | e4d452b4 | Michael Hanselmann | sys.stdout.flush() |
86 | e4d452b4 | Michael Hanselmann | |
87 | e4d452b4 | Michael Hanselmann | if sum(verify) != 1: |
88 | e4d452b4 | Michael Hanselmann | print "Inconsistent state!" |
89 | e4d452b4 | Michael Hanselmann | os._exit(1) # pylint: disable=W0212 |
90 | e4d452b4 | Michael Hanselmann | |
91 | e4d452b4 | Michael Hanselmann | verify[me] = 0
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92 | e4d452b4 | Michael Hanselmann | finally:
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93 | e4d452b4 | Michael Hanselmann | lock.release() |
94 | e4d452b4 | Michael Hanselmann | |
95 | e4d452b4 | Michael Hanselmann | |
96 | e4d452b4 | Michael Hanselmann | def main(): |
97 | e4d452b4 | Michael Hanselmann | (opts, _) = ParseOptions() |
98 | e4d452b4 | Michael Hanselmann | |
99 | e4d452b4 | Michael Hanselmann | lock = locking.SharedLock("TestLock")
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100 | e4d452b4 | Michael Hanselmann | |
101 | e4d452b4 | Michael Hanselmann | state = State(opts.thread_count) |
102 | e4d452b4 | Michael Hanselmann | |
103 | e4d452b4 | Michael Hanselmann | lock.acquire(shared=0)
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104 | e4d452b4 | Michael Hanselmann | try:
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105 | e4d452b4 | Michael Hanselmann | for i in range(opts.thread_count): |
106 | e4d452b4 | Michael Hanselmann | t = threading.Thread(target=_Counter, args=(lock, state, i)) |
107 | e4d452b4 | Michael Hanselmann | t.setDaemon(True)
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108 | e4d452b4 | Michael Hanselmann | t.start() |
109 | e4d452b4 | Michael Hanselmann | |
110 | e4d452b4 | Michael Hanselmann | start = time.clock() |
111 | e4d452b4 | Michael Hanselmann | finally:
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112 | e4d452b4 | Michael Hanselmann | lock.release() |
113 | e4d452b4 | Michael Hanselmann | |
114 | e4d452b4 | Michael Hanselmann | while True: |
115 | e4d452b4 | Michael Hanselmann | if (time.clock() - start) > opts.duration:
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116 | e4d452b4 | Michael Hanselmann | break
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117 | e4d452b4 | Michael Hanselmann | time.sleep(0.1)
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118 | e4d452b4 | Michael Hanselmann | |
119 | e4d452b4 | Michael Hanselmann | # Make sure we get a consistent view
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120 | e4d452b4 | Michael Hanselmann | lock.acquire(shared=0)
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121 | e4d452b4 | Michael Hanselmann | |
122 | e4d452b4 | Michael Hanselmann | lock_cputime = time.clock() - start |
123 | e4d452b4 | Michael Hanselmann | |
124 | e4d452b4 | Michael Hanselmann | res = resource.getrusage(resource.RUSAGE_SELF) |
125 | e4d452b4 | Michael Hanselmann | |
126 | e4d452b4 | Michael Hanselmann | print "Total number of acquisitions: %s" % state.total_count |
127 | e4d452b4 | Michael Hanselmann | print "Per-thread acquisitions:" |
128 | e4d452b4 | Michael Hanselmann | for (i, count) in enumerate(state.counts): |
129 | e4d452b4 | Michael Hanselmann | print (" Thread %s: %d (%0.1f%%)" % |
130 | e4d452b4 | Michael Hanselmann | (i, count, (100.0 * count / state.total_count)))
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131 | e4d452b4 | Michael Hanselmann | |
132 | e4d452b4 | Michael Hanselmann | print "Benchmark CPU time: %0.3fs" % lock_cputime |
133 | e4d452b4 | Michael Hanselmann | print ("Average time per lock acquisition: %0.5fms" % |
134 | e4d452b4 | Michael Hanselmann | (1000.0 * lock_cputime / state.total_count))
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135 | e4d452b4 | Michael Hanselmann | print "Process:" |
136 | e4d452b4 | Michael Hanselmann | print " User time: %0.3fs" % res.ru_utime |
137 | e4d452b4 | Michael Hanselmann | print " System time: %0.3fs" % res.ru_stime |
138 | e4d452b4 | Michael Hanselmann | print " Total time: %0.3fs" % (res.ru_utime + res.ru_stime) |
139 | e4d452b4 | Michael Hanselmann | |
140 | e4d452b4 | Michael Hanselmann | # Exit directly without attempting to clean up threads
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141 | e4d452b4 | Michael Hanselmann | os._exit(0) # pylint: disable=W0212 |
142 | e4d452b4 | Michael Hanselmann | |
143 | e4d452b4 | Michael Hanselmann | |
144 | e4d452b4 | Michael Hanselmann | if __name__ == "__main__": |
145 | e4d452b4 | Michael Hanselmann | main() |