[issue30317] test_timeout() of test_multiprocessing_spawn.WithManagerTestBarrier fails randomly on x86 Windows7 3.x buildbot

[Davin Potts]

Davin Potts added the comment:

To better accommodate very slow buildbots, a parameter is added in PR-1722 to scale up the timeout durations where they are necessary on a per-machine basis.

Relevant tests have a timeout set to some default number of seconds times a multiplier value.

The multiplier value can be controlled by the environment variable 'CONF_TIMEOUT_MULTIPLIER' which defaults to a multiplier of 1.0 if not set.  On buildbots, this environment variable can be set by defining a parameter by that name in the buildbot configuration file for a machine.  Otherwise, this environment variable can be set in the usual way before running tests on non-buildbot machines.

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nosy: +davin, zach.ware
stage:  -> patch review

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<http://bugs.python.org/issue30317>
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