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Bbn Corporation

Frederick John Roeber

David Bruce Cousins

Brian John Palmer

Scott Davis Stafford

Robert E Hathaway

Kevin Jay Brothers

A system for collecting events relating to multiple distributed physical systems includes multiple event collection cards ( ), each receiving events from one of the distributed physical systems. Each event collection card includes a time stamp clock ( ) configured to provide a time stamp when each event is received, an event memory ( ) configured to store the received events, a sync interface unit ( ) configured to receive a sync signal, a sync control unit ( ) configured to synchronize the time stamp clock ( ) to the sync signal received by the sync interface ( ), and a collection control unit ( ) configured to time stamp the collected events according to the time stamp clock ( ) synchronized to the sync signal, and to store the time stamped events in the event memory ( ).

System and method for logging computer event data and physical components of a complex distributed system

Event logging using a single board computer control card configurable onto a backplane containing target processor(s) being monitored. A high resolution clock on the control card time stamps events. Memory on the control card provides a central buffer to store event data, and stores a control program effecting functionality of the card A network interface a facilitates communication with host computer(s) for post processing of event data and to control, communicate with and access the control card. A control program effects event data collection and organization/storage of events in control card memory. The control program coordinates retrieval of events from an event interface area of memory on slave target processors prior to processing by the control card. The control program coordinates offloading of event data from the control card to host computer(s) for post processing by known software visualization tools. Target software is instrumented with calls to a macro which in turn calls the logging function to effect recording of events. The event records are temporarily stored in an event interface portion of memory on the control card or in a buffer on the target processor(s).

Centralized computer event data logging system

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Portsmouth, RI, United States of America

Frederick John Roeber