![]() ![]() But it certainly shows which processes have been using the CPU(s) recently. How To Analyze Performance, Hangs, and High CPU Utilization on Linux Process Status - ps -eLf vmstat 5 12 kill -3 whoami top -bc -d 60 -n 5 top -bH -d 5. By default, top displays this as a percentage of a single CPU. CPU percentage doesn't really take into account the waiting queues (while load average does): it's an after-the-fact statistic of what happened in a certain frame of time. CPU- CPU Usage : The percentage of your CPU that is being used by the process. You can use your package manager to install it. it has so many threads to run that it pretty much swamps the 4 cores with requests. CPU usage graph Another option is to use htop, which is similar to top but geared more towards normal tasks. ![]() top will continue running in your shell until you stop it using the standard key combination of Ctrl+C to exit a running process. By default, top automatically sorts these by CPU usage, so you can see the busiest processes first. So 350% on a 4-core system means that, for a period of time, mysqld would be taking over three full CPUs and half the time of the fourth CPU - i.e. The remainder of the displayed output shows the running processes and their usage statistics. The CPU percentage shown by top is a measure of how often a single process is loaded by the kernel to run on the CPU, averaged over a period of time. A load average of 2.0 (on a single-core system( would mean that half the processes would be waiting for a chance to run on the CPU :-( A load average of 0.33 would mean that there is so little load on the system that 2/3 of the time the CPU is basically doing nothing but waiting for more processes to run. With one CPU, a load average of 1.0 means that this CPU is able to fully process all requests on the queue optimally - no process is waiting for CPU, and no CPU cycles are wasted (i.e. Load average shows how many processes are waiting on the queue (adjusted for the number of CPUs). ![]()
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