CPU performance metrics and tuning

cpu.sh

uname -a
lsb_release -a
lscpu | grep "MHz".
sudo dmidecode -t processor | grep "Speed"
lshw -c cpu | egrep "capacity|size"
sudo lshw -c cpu | egrep "capacity|size"
head /sys/devices/system/cpu/cpu0/cpufreq/scaling_*

 yum install -y powertop
 powertop
 
 vmstat 1
 
 # this one actually changes the CPU idle time and bossts performance somehow. you can see the change in the output of "cpupower frequency-info".
 cpupower idle-set --disable-by-latency 0
 # however it raises the temprature of the server and electricity consumption of the machine. You can enable idle mechanisms by below:
 cpupower idle-set -E