Browse Prior Art Database

System Activity Meter

IP.com Disclosure Number: IPCOM000092097D
Original Publication Date: 1968-Sep-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 3 page(s) / 35K

Publishing Venue

IBM

Related People

Hosie, JA: AUTHOR

Abstract

The apparatus monitors the activity of portions of, or the overall activity of, a total information handling system. For example, the activity of channels, busses, registers or other component parts of a data processing system can be independently sensed or the weighted sum of the activity of all those component parts can be obtained to measure the overall activity.

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System Activity Meter

The apparatus monitors the activity of portions of, or the overall activity of, a total information handling system. For example, the activity of channels, busses, registers or other component parts of a data processing system can be independently sensed or the weighted sum of the activity of all those component parts can be obtained to measure the overall activity.

The activity measurement is effectively a measure of the on-off duty cycle of the particular component part which is sensed. For example, in a system containing a channel over which an I/O device communicates with the central processing unit, information is transferred by binary signals over the channel. By sensing the on-off switching which occurs on the channel during its use and by averaging the sensed information over a specified time duration such as a few seconds or minutes, a measure of the activity of that channel for that time duration is obtained. Alternatively, channels or other component parts of a system can have control lines which indicate the busy or in use status of the channel or other portion. Sensing and averaging the condition or the changes of condition in such a control line also gives an indication of the activity of the particular channel or other component part being measured. The selection of which component part of the system is to be measured and which line associated with that part determines the type of activity which is measured.

The activity of the component part of the system to be measured is sensed by probes 1...N. The latter have their input terminals 2 connected to a line associated with a selected component part. For example, probe 1 might be connected to Channel 1, probe 2 to Channel 2, probe 3 to a Multiplex channel, and so on until probe N is connected to Bus B. Each probe is connected t...