timings/hundred/TimeSCons-run.py

   1 #
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  23
  24 """
  25 This configuration is for timing how we handle the NxM interaction when
  26 we build a lot of targets from a lot of source files.
  27
  28 We create a list of $TARGET_COUNT target files that will each be built by
  29 copying a file from a corresponding list of $TARGET_COUNT source files.
  30 The source files themselves are each built by a Python function action
  31 that's the equivalent of "echo contents > $TARGET".
  32 """
  33
  34 import TestSCons
  35
  36 # Full-build time of just under 10 seconds on ubuntu-timings slave,
  37 # as determined by bin/calibrate.py on 9 December 2009:
  38 #
  39 # run   1:   3.124:  TARGET_COUNT=50
  40 # run   2:  11.936:  TARGET_COUNT=160
  41 # run   3:   9.175:  TARGET_COUNT=134
  42 # run   4:  10.489:  TARGET_COUNT=146
  43 # run   5:   9.798:  TARGET_COUNT=139
  44 # run   6:   9.695:  TARGET_COUNT=139
  45 # run   7:   9.670:  TARGET_COUNT=139
  46
  47 test = TestSCons.TimeSCons(variables={'TARGET_COUNT':139})
  48
  49 for t in range(test.variables['TARGET_COUNT']):
  50     with open('source_%04d' % t, 'w') as f:
  51         f.write('contents\n')
  52
  53 test.main()
  54
  55 test.pass_test()