Data processing: measuring – calibrating – or testing – Measurement system – History logging or time stamping
Reexamination Certificate
2007-03-06
2007-03-06
Nghiem, Michael (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system
History logging or time stamping
C702S089000, C713S375000, C713S400000
Reexamination Certificate
active
11103786
ABSTRACT:
A method, apparatus and computer instructions for application based tracing and for normalization of processor clocks in a symmetric multiprocessor environment. By deliberately establishing a large skew among processor clocks, it is possible to perform application based tracing by directly using the processors. In addition, the identity, time stamp, and drift information of each processor may be used to create a time library. The time library is used to adjust a measured time to execute a program or software routine. The adjusted time is a normalized time that is statistically more accurate than the measured time alone. The adjusted time is then reported as the time to execute the program or software routine.
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U.S. Appl. No. 0428038.4, filed Dec. 22, 2004, Siegwart, D Measuring Elapsed Time for a Software Routine.
Levine Frank Eliot
Siegwart David Kevin
Fay III Theodore D.
Le John
Nghiem Michael
Rodriguez Herman
Yee Duke W.
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