SCons / timings / hundred / TimeSCons-run.py

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"""
This configuration is for timing how we handle the NxM interaction when
we build a lot of targets from a lot of source files.

We create a list of $TARGET_COUNT target files that will each be built by
copying a file from a corresponding list of $TARGET_COUNT source files.
The source files themselves are each built by a Python function action
that's the equivalent of "echo contents > $TARGET".
"""

import TestSCons

# Full-build time of just under 10 seconds on ubuntu-timings slave,
# as determined by bin/calibrate.py on 9 December 2009:
#
# run   1:   3.124:  TARGET_COUNT=50
# run   2:  11.936:  TARGET_COUNT=160
# run   3:   9.175:  TARGET_COUNT=134
# run   4:  10.489:  TARGET_COUNT=146
# run   5:   9.798:  TARGET_COUNT=139
# run   6:   9.695:  TARGET_COUNT=139
# run   7:   9.670:  TARGET_COUNT=139

test = TestSCons.TimeSCons(variables={'TARGET_COUNT':139})

for t in range(test.variables['TARGET_COUNT']):
    open('source_%04d' % t, 'wb' ).write('contents\n')

test.main()

test.pass_test()
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