Method and system for performance monitoring within a data proce

Details Method and system for performance monitoring within a data proce Method and system for performance monitoring within a data proce

1994-12-09

1996-09-17

Trammell, James P.

Boots, shoes, and leggings

364484, 364569, 371 61, 395550, G06F 1300

Patent

active

055575480

ABSTRACT:
A method and system are disclosed which monitor specified events among the number of events within a data processing system. The system of the present invention includes a software writable control register which specifies the events within the data processing system which are to be monitored, hardware for monitoring the specified events, and logic for detecting each occurrence of a specified event. In addition, the system of the present invention includes a number of counters which incrementally advance in response to an occurrence of a specified event, wherein, in response to a setting of the control register, at least one of the counters is programmed to incrementally advance in response to an overflow from a second counter. By selectively linking the counters in this manner, the maximum number of occurrences which may be counted by the counters may be dynamically altered.

REFERENCES:
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patent: 4519091 (1985-05-01), Chu et al.
patent: 4815113 (1989-03-01), Ludwig et al.
patent: 5053983 (1991-10-01), Hyatt
patent: 5090034 (1992-02-01), Ganza
patent: 5107439 (1992-04-01), Clark
patent: 5198750 (1993-03-01), Prokin
patent: 5446876 (1995-08-01), Levine et al.

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