What is Pswpin?

pswpin – Number of kilobytes the system has swapped in from disk per second. pswpout – Number of kilobytes the system has swapped out to disk per second.

What is Proc Vmstat?

vmstat (virtual memory statistics) is a system utility that collects and displays information about system memory, processes, interrupts, paging and block I/O. Using vmstat, you can specify a sampling interval to observe system activity in near-real time.

What is Pgmajfault?

pgmajfault – Number of major faults per second the system required loading a memory page from disk.

What is vmstat used for?

Virtual memory statistics reporter, also known as vmstat , is a Linux command-line tool that reports various bits of system information. Things like memory, paging, processes, IO, CPU, and disk scheduling are all included in the array of information provided.

What do you need to know about vmstat?

vmstat (virtual memory statistics) is a valuable monitoring utility, which also provides information about block IO and CPU activity in addition to memory. vmstat provides a number of values and will typically be called using two numerical parameters.

What does it mean when vmstat is running in parallel?

This will lead to an increased load on the CPU (sy – system time). At the same time, the vmstat executing in parallel will indicate that between 93% and 97% of the CPU time is being used for the execution of kernel code (for the generation of random numbers, in this case).

How big are the blocks in Linux vmstat?

All linux blocks are currently 1024 bytes. Old kernels may report blocks as 512 bytes, 2048 bytes, or 4096 bytes. Since procps 3.1.9, vmstat lets you choose units (k, K, m, M). Default is K (1024 bytes) in the default mode. vmstat uses slabinfo 1.1

How to read vmstat output using Red Hat customer portal?

A large file (such as an ISO file) will be read and written to /dev/null using dd. Executed in parallel, vmstat will show the increased IO read load (the bi value).