This will help you run tests and check whether everything is working properly or if some kind of intervention is needed. Percent time spent in kernel space.Generally, each Operating System we’re about to include here has similar steps and status bars for showing you all the information you need regarding CPU usage. Linux 2.6.11+ Percentage of time a virtual CPU waits for a real CPU while the hypervisor is servicing another virtual processor. Number of software interrupts since boot. Time spent by niced (prioritized) processes executing in user mode this also includes guest_nice time. Time spent for servicing hardware interrupts. This is not accounted in idle time counter. If the CPU has completed all tasks it is idle. Linux 2.6.24+: Time spent running a virtual CPU. A context switch is a procedure that a computer’s CPU (central processing unit) follows to change from one task (or process) to another while ensuring that the tasks do not conflict. Number of context switches (voluntary + involuntary) since boot. OK if user, system, iowait and overall cpu-usage (minus nice) are all below the thresholds within the last -count checks. Top3 processes which consumed the most cpu time: count=5 (the default) while checking every minute means that the check reports a warning if any of user, system, iowait or overall cpu-usage was above a threshold in the last 5 minutes.Ģ.6% - user: 1.6%, system: 0.7%, irq: 0.2%, softirq: 0.1% We check system-wide CPU stats, not per-CPU. Warns only if any of user, system, iowait or overall cpu-usage is above a certain threshold within the last n checks (default: 5). In addition, the top 3 processes which consumed the most CPU time are listed. Outputs the cpu times having > 0% in the first line, sorted by value. Returns a bunch of numbers representing the current system-wide CPU utilization as a percentage.

Open Source Admin-Handbuch der Linuxfabrik Check top3-processes-which-caused-the-most-io.Check mysql-innodb-buffer-pool-instances.The Linuxfabrik Monitoring Plugins Collection.

Linux cpu stats