Auto-adjust timeout based on actual durations #447
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Automatically reduce the "--timeout" value when actual jobs are executed quicker than its value. Because timings vary hugely in practice, we multiply measured durations by 10x. The auto-adjustment can save a lot of time during late stages of the reduction, when the interestingness test finishes quickly normally, but some unsuccessful reductions may hang (something we observe happening a lot in practice with C/C++ compilers).
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Automatically reduce the "--timeout" value when actual jobs are executed quicker than its value. Because timings vary hugely in practice, we multiply measured durations by 10x.
The auto-adjustment can save a lot of time during late stages of the reduction, when the interestingness test finishes quickly normally, but some unsuccessful reductions may hang (something we observe happening a lot in practice with C/C++ compilers).
A new flag "--no-auto-adjust-timeout" can be used to suppress the new logic if it misbehaves in some cases.