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Managing System Information, Processes, and Performance in Oracle® Solaris 11.4

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Updated: August 2021

Troubleshooting Problems With System Processes

    Some common system process problems you might troubleshoot are as follows:

  • Several identical jobs are owned by the same user.

    This problem might occur because of a running script that starts a lot of background jobs without waiting for any of the jobs to finish.

  • A process has accumulated a large amount of CPU time.

    You can identify this problem by checking the TIME field in the ps output. This value can indicate that the process is in an endless loop.

  • A process is running with a priority that is too high.

    Use the ps -c command to check the CLS field, which displays the scheduling class of each process. A process running as a real-time (RT) process can monopolize the CPU. Or, look for a timesharing (TS) process with a high nice number. An administrator might have increased the priority of a process. The system administrator can lower the priority by using the nice command.

  • A runaway process progressively uses increasing amounts of CPU time.

    You can identify this problem by looking at the time when the process started (STIME) and by watching the cumulation of CPU time (TIME) for a while.