Using An Auto-Trace To Assess A Cpu Utilization Problem - Nortel 8300 Troubleshooting Manual

32 Initial troubleshooting
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Using an auto-trace to assess a CPU utilization problem

Auto-trace monitors CPU utilization so that when the configured utilization is
reached and sustained for the preconfigured amount of time, a CP trace is
performed and saved to the PCMCIA.
The default CPU utilization settings are:
•
•
•
•
Use the following procedure to configure the module and verbosity to trace
and then enable the feature.
Procedure steps
Step
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Copyright © 2007, Nortel Networks
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trace clear
Set the trace level using the following command:
trace level 9 3
Wait approximately 30 seconds.
Turn the trace off using the following command:
trace off
Access the information obtained by the trace using the following
command:
trace info
If you need to save the trace you can save the trace file to the
PCMCIA card using the following command:
save trace
The trace files is saved to the PCMCIA card with a filename of
systrace.txt.
High CPU utilization: 90%
High track duration: 5 seconds
Low CPU utilization: 75%
Low track durations: 5 seconds
Action
Configure the module and verbosity using the following command:
trace auto-trace add-module <module_id> <verbosity_lev
el>
Nortel Ethernet Routing Switch 8300
Troubleshooting
NN46200-704 01.01 Standard
4.0 29 October 2007
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