I/O

sar command in Linux

By Karunesh Johri • Updated: February 20, 2023

The sar command under Linux and Unix systems gives the system activity reports. As the system works, a record of activities is kept in certain counters in the kernel. The sar command gives statistics regarding the CPU, I/O, paging, devices, memory, swap space, network, run queue length and load average, interrupts and power management. At …

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Tags: CPU, devices, I/O, interrupts, Linux, load average, memory, network, paging, power management, run queue length, sar, swap space, sysadmin, System administration

pidstat

By Karunesh Johri • Updated: February 20, 2023

The best way to use pidstat is to pass a list of process ids with the -p parameter. The -u option reports CPU utilization. The -l parameter displays the process command name and its arguments. And we can optionally put time interval in seconds for the interval between reports and again, optionally, a count for …

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Tags: command, CPU, I/O, Linux, memory, pidstat, process, statistics, sysadmin, System administration, utilization