$ uptime # to see LA (number of processes wanting to run)
$ dmesg | tail # Last 10 system message. Look for error that can cause perf issues
$ vmastat 1 # key server statistics
$ mpstat -P ALL 1: # break CPU statistics per CPU.
$ pidstat 1 # small top that keep printing instead of refreshing
$ iostat -xz 1 # for io stats
$ free -m # memory usage
$ sar -n DEV 1 # network interface throughput
$ sar -n TCP,ETCP 1 #summarized stats of TCP metrics 
Created
March 8, 2016 07:38
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