IBM Books

Diagnosis Guide

Trace information


Do not activate this trace facility until you have read this section completely, and understand this material. If you are not certain how to properly use this facility, or if you are not under the guidance of IBM Service, do not activate this facility.

Activating this facility may result in degraded performance of your system. Activating this facility may also result in longer response times, higher processor loads, and the consumption of system disk resources. Activating this facility may also obscure or modify the symptoms of timing-related problems.

Each External hardware daemon provides facilities that allow the tracing of certain aspects of its internal function, as well as its communication with the SP Frame Supervisor. This is done using the hmadm command. Use this trace only when directed by the IBM Support Center. The PSSP: Command and Technical Reference gives details about running the trace and obtaining the output.

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