Playbook #1 High CPU Utilization of Server(%)
High CPU utilization can result in performance issues and resource constraints on the server. The playbook helps in identifying the resource-intensive processes and help reduce their impact on the system.
Checking Each CPU usages for 5 sec
mpstat -P ALL 1 5
Checking Process Consuming High CPU
pidstat 1 5
Checking process consuming high CPU by pidstat for interval of 5 sec
pidstat 1 1|awk '/[0-9][0-9]:[0-9][0-9]:[0-9][0-9]/ { if ($8 > 90 ) {print $NF ,\"pross taking\", $8,\"% of cpu\" }}'
More Details Of Process
ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%cpu | head -20|column -t
CPU utilization of last 5 minutes for the affected host
sar -u 2 10
Get core based utilization details
top -b -n1 | grep 'Cpu(s)' | awk '{print $2 + $4}'
Identify user running rpocesses in state R, D and Z
ps -eo s,user | grep '^[RDZ]' | sort | uniq -c | sort -nbr | head -20
Identify user/commands running rpocesses in state R, D and Z
ps -eo s,user,cmd | grep ^[RDZ] | sort | uniq -c | sort -nbr | head -20