Information processing system having performance measurement capabilities
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United States of America Patent
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Jul 22, 1997
Issued Date -
N/A
app pub date -
Feb 22, 1996
filing date -
Mar 30, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An information processing system capable of performance measurement by the use of a small amount of mounted hardware. The information processing system having central processors installed therein comprises a control circuit, and a performance measurement validation register for specifying whether a performance measurement function is valid or invalid. In a case where the validity of the measurement function has been specified by the register, the control circuit operates one loop in a duplex configuration as a performance measurement facility. At this time, counter #1-counter #3 are used as counters for totalizing performance information. On the other hand, in a case where the invalidity of the measurement function has been specified, both loops in the duplex configuration are operated as the central processors. At this time, the counter #1-the counter #3 are used as timer counters for controlling buses.
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