Analysis of short term CPU spikes in an operating system kernel
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United States of America Patent
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Aug 4, 2015
Grant Date -
May 16, 2013
app pub date -
Dec 31, 2012
filing date -
Feb 22, 2010
priority date (Note) -
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Abstract
A profiler may analyze processes being run by a processor. The profiler may include logic to periodically sample a value of an instruction pointer that indicates an instruction in the first process that is currently being executed by the processor and logic to update profile data based on the sampled value. The profiler may additionally include logic to determine, in response to a context switch that includes the operating system switching the active process from the first process to another of the plurality of processes, whether the first process executes for greater than a first length of time; logic to stop operation of the profiler when the first process executes for greater than the first length of time; and logic to clear the profile data when the first process fails to execute for greater than the first length of time.
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