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Relocate and Multiprocessor Map and Trace Monitor

IP.com Disclosure Number: IPCOM000077827D
Original Publication Date: 1972-Sep-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 2 page(s) / 64K

Publishing Venue

IBM

Related People

East, DG: AUTHOR [+3]

Abstract

A hardware monitor which is hooked to a computing system by probes, gathers and reduces data pertinent to performance, jobstream characterization, and errors. Multiple modes of operation are used to trace events in chronological order, map data domains, and count meaningful system events. The monitor employs a stored program in conjunction with a random-access internal memory for real-time execution of data-reduction algorithms, etc. It is a multichannel data-collection system which operates through a standard IBM System 360/370 channel. I/O communication between the monitor and the monitored system is provided through a rudimentary control unit.

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Relocate and Multiprocessor Map and Trace Monitor

A hardware monitor which is hooked to a computing system by probes, gathers and reduces data pertinent to performance, jobstream characterization, and errors. Multiple modes of operation are used to trace events in chronological order, map data domains, and count meaningful system events. The monitor employs a stored program in conjunction with a random-access internal memory for real-time execution of data-reduction algorithms, etc. It is a multichannel data- collection system which operates through a standard IBM System 360/370 channel. I/O communication between the monitor and the monitored system is provided through a rudimentary control unit.

Parameters which the user must define include a system state which initiates the interval of interest; two system states (may be identical to one another) to terminate the interval of interest; those system states (up to 8) for which data is to be collected; the mode of operation; up to 4 additional states for the purpose of initiating annotative recording; and the signals which define the event to be recorded.

Referring to the data flow diagram, system operation is as follows:

1) Control parameters are entered via the buss/tag lines,

control unit I/O interface, and demultiplexer.

2) Control Parameters are stored in the:

(a) OP REG

(b) COMMENT PEG

(c) TRIGGER LOGIC

(d) CONTROL LOGIC

(e) REAL TIME CLOCK.

3) The OP register contents are decoded, thereby enabling one

of the...