Dynamic prescaling for performance counters
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United States of America Patent
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Dec 6, 2016
Grant Date -
Oct 6, 2016
app pub date -
Jun 14, 2016
filing date -
Aug 29, 2014
priority date (Note) -
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Abstract
A method of configuring a prescaling circuit in a performance counter circuit for a computer processing system can include receiving a first number of signaled events at a prescaling circuit configured to generate event counts for a performance counter circuit. The method can include generating event counts at a current event-count rate for the first number of signaled events and determining a detected event-count rate for the signaled events based on a rate at which the first number of signaled events are received at the prescaling circuit. The method can include determining that the detected event-count rate is greater than the current event-count rate. The method can include increasing the current event-count rate in response to determining that the detected event-count rate is greater than the current event-count rate.
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