WORST-CASE EXECUTION TIME STATISTICAL TOOL
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United States of America Patent
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Aug 25, 2016
app pub date -
Feb 23, 2015
filing date -
Feb 23, 2015
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One embodiment is directed towards a method for determining a worst-case execution time (WCET) with a desired probability of exceedance. The method includes estimating distribution function parameters for an M set of execution times for each of a Gumbel, Fréchet, and Weibull extreme value theory (EVT) distribution functions. The method can determine whether the M set of execution times fits any of the EVT distribution functions. For each of the EVT distribution functions that fits the M set of execution times, a minimum number of execution times can be calculated. For each of the EVT distribution functions that fits the M set of execution times and in which the M set of execution times has at least as many execution times as the minimum number of execution times, a WCET can be calculated for the M set of execution times to the desired probability of exceedance.
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