05642478 is referenced by 110 patents and cites 19 patents.

A dedicated debugging facility for tracing hardware and software faults in a distributed digital system. An event data capture circuit is integrated into each processing node in a distributed multinode system for capturing event data within each node under software control. The captured event data is stored in one of a plurality of variable-length trace data buffers in the node processor memory space for analysis or transfer. These dedicated trace data acquisition circuits provide continuously available trace data for the hardware and software functions within each node. Each variable-length trace data entry is stored in the trace data buffers according to a format of this invention that permits collection and assembly of trace data entries from throughout the distributed multinode system to debug local hardware or software and to debug internodal interconnection hardware and software.

Title
Distributed trace data acquisition system
Application Number
8/366185
Publication Number
5642478
Application Date
December 29, 1994
Publication Date
June 24, 1997
Inventor
Donald John Lang
Cupertino
CA, US
Mark C Johnson
San Jose
CA, US
Chin Huang Chen
San Jose
CA, US
Agent
Baker Maxham Jester & Meador
Assignee
International Business Machines Corporation
NY, US
IPC
G06F 11/08
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