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#!/usr/bin/python
# Copyright 2010 Lars Wirzenius
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import cProfile
import sys
import time
import genbackupdatalib
def measure(repeats, func, arg, do_profile, profname):
def helper():
for i in range(repeats):
func(arg)
print 'measuring', profname
start_time = time.time()
start = time.clock()
if do_profile:
globaldict = globals().copy()
localdict = locals().copy()
cProfile.runctx('helper()', globaldict, localdict,
'%s.prof' % profname)
else:
helper()
end = time.clock()
end_time = time.time()
return end - start, end_time - start_time
def nop(size):
pass
def main():
repeats = int(sys.argv[1])
size1 = int(sys.argv[2])
do_profile = sys.argv[3] == 'yes'
looptime = measure(repeats, nop, None, do_profile, 'calibrate')
g = genbackupdatalib.DataGenerator(0)
result = measure(repeats, g.generate, size1, do_profile, 'generate')
def speed(result, i):
total_data = repeats * size1
return total_data / (result[i] - looptime[i])
def humansize(size):
return '%4.1f MiB/s' % (size / 1024 / 1024)
def report(label, result):
cpu, wall = result
print '%-12s: %5.3f s (%8s)' % \
(label, cpu, humansize(speed(result, 0)))
report('generate', result)
if __name__ == '__main__':
main()
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