Performance

USE Method

snatched from https://brendangregg.com/usemethod.html &
youtube: Container Performance Analysis-bK9A5ODIgac

# all cpus
mpstat -P ALL

# cpu 1
mpstat -P 1

Taken from: https://linoxide.com/commands-to-understand-page-faults-in-linux/

Field 1 - pid
Field 2 - filename of the executable
Field 10 - number of minor page faults
Field 12 - number of major page faults

cut -d ' ' -f 1,2,10,12 /proc/<pid>/stat

$ man vmstat

$ free -h

# sort processes by memory consumption (gnu tools only)
$ ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%mem | head

# -d ... display disk utilization report
$ iostat --human --pretty -d

# run once
$ sar -n DEV 1 1

# TCP stack
$ sar -n TCP,ETCP 1 1

pidstat -p <pid>

# global
pidstat

dmesg | tail