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Managing System Information, Processes, and Performance in Oracle Solaris 11.1 Oracle Solaris 11.1 Information Library |
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Managing System Information, Processes, and Performance in Oracle Solaris 11.1 Oracle Solaris 11.1 Information Library |
1. Managing System Information (Tasks)
2. Managing System Processes (Tasks)
What's New in Managing System Processes
Managing System Processes (Task Map)
Commands for Managing System Processes
Using the /proc File System and Commands
Managing Processes by Using Process Commands (/proc)
How to Display Information About Processes
Terminating a Process (pkill, kill)
How to Terminate a Process (pkill)
How to Terminate a Process (kill)
Debugging a Process (pargs, preap)
Managing Process Class Information
Managing Process Class Information (Task Map)
Changing the Scheduling Priority of Processes (priocntl)
How to Display Basic Information About Process Classes (priocntl)
How to Display the Global Priority of a Process
How to Designate a Process Priority (priocntl)
How to Change Scheduling Parameters of a Timesharing Process (priocntl)
How to Change the Class of a Process (priocntl)
Changing the Priority of a Timesharing Process (nice)
How to Change the Priority of a Process (nice)
3. Monitoring System Performance (Tasks)
4. Scheduling System Tasks (Tasks)
5. Managing the System Console, Terminal Devices, and Power Services (Tasks)
Here are some tips on obvious problems you might encounter:
Look for several identical jobs that 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.
Look for a process that has accumulated a large amount of CPU time. You can identify this problem by checking the TIME field in the ps output. Possibly, the process is in an endless loop.
Look for a process that 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 executing as a real-time (RT) process can monopolize the CPU. Or, look for a timesharing (TS) process with a high nice number. A user with superuser privileges might have increased the priority of a process. The system administrator can lower the priority by using the nice command.
Look for a runaway process. A runaway process progressively uses more and more 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.
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