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* Description: Knowledge of Linux top command output
* Date: 02:00 PM EST, 06/13/2017
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<1> Information within "top" command output - display dynamic real-time system resource summary and tasks being managed by the Linux kernel:
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|__ us: user cpu time (or) % CPU time spent in user space.
sy: system cpu time (or) % CPU time spent in kernel space.
ni: user nice cpu time (or) % CPU time spent on low priority processes.
id: idle cpu time (or) % CPU time spent idle.
wa: io wait cpu time (or) % CPU time spent in wait (on disk).
hi: hardware irq (or) % CPU time spent servicing/handling hardware interrupts.
si: software irq (or) % CPU time spent servicing/handling software interrupts.
st: steal time - - % CPU time in involuntary wait by virtual cpu while hypervisor is servicing another processor (or) % CPU time stolen from a virtual machine.
<2> Command output:
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|__ $ top
top - 14:02:44 up 7 days, 7:19, 1 user, load average: 0.05, 0.03, 0.00
Tasks: 185 total, 1 running, 184 sleeping, 0 stopped, 0 zombie
Cpu0 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu1 : 0.0%us,100.0%sy, 0.0%ni, 0.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 16336236k total, 10316724k used, 6019512k free, 270800k buffers
Swap: 14434300k total, 32924k used, 14401376k free, 9449720k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
8663 root 20 0 15040 1316 940 R 100.0 0.0 0:00.23 top
1 root 20 0 19340 1404 1120 S 0.0 0.0 0:21.08 init
2 root 20 0 0 0 0 S 0.0 0.0 0:00.05 kthreadd
3 root RT 0 0 0 0 S 0.0 0.0 0:02.46 migration/0
4 root 20 0 0 0 0 S 0.0 0.0 0:04.98 ksoftirqd/0
5 root RT 0 0 0 0 S 0.0 0.0 0:00.00 stopper/0
6 root RT 0 0 0 0 S 0.0 0.0 0:00.73 watchdog/0
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