Trace data capture device and method, system, diagnostic method and apparatus and computer program

摘要

A data processing system has multiple sources 8 of trace data. The trace data is stored in a trace capture device 6 before being output to diagnostic apparatus 7. The device detects the sources of the trace data stored in the device. The source information can be output to the diagnostic apparatus independently of the trace data. The trace data may be divided into sections. The diagnostic apparatus may request source information for all the trace data or for specific sections of the trace data. The diagnostic apparatus may request that the device only output the section of the trace data containing data from particular sources. The device may extract the source information from the trace data and store it separately 32, 34. The device may aggregate the source information.