Difference between revisions of "top multiple cpu, multicore monitoring"
(Created page with " One of the lines has CPU usage information represented like this: Cpu(s): 87.3%us, 1.2%sy, 0.0%ni, 27.6%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st '''us''': user cpu time ...") |
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| − | + | To view individual CPU core information with top, | |
| − | + | ||
| + | run top interactively, then hit "1" to see a detailed view like... | ||
| + | Tasks: 223 total, 2 running, 221 sleeping, 0 stopped, 0 zombie | ||
| + | %Cpu0 : 28.4 us, 8.8 sy, 12.9 ni, 49.5 id, 0.0 wa, 0.0 hi, 0.3 si, 0.0 st | ||
| + | %Cpu1 : 15.9 us, 7.6 sy, 16.2 ni, 58.0 id, 0.0 wa, 0.0 hi, 2.2 si, 0.0 st | ||
| + | %Cpu2 : 8.6 us, 5.2 sy, 10.7 ni, 74.8 id, 0.0 wa, 0.0 hi, 0.6 si, 0.0 st | ||
| + | %Cpu3 : 8.1 us, 3.6 sy, 7.5 ni, 80.8 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st | ||
| − | '''us''': user cpu time (or) % CPU time spent in user space | + | |
| − | '''sy''': system cpu time (or) % CPU time spent in kernel space | + | '''Column information''' (not in man page) |
| − | '''ni''': user nice cpu time (or) % CPU time spent on low priority processes | + | |
| − | '''id''': idle cpu time (or) % CPU time spent idle | + | '''us''': user cpu time (or) % CPU time spent in user space<br> |
| − | '''wa''': io wait cpu time (or) % CPU time spent in wait (on disk) | + | '''sy''': system cpu time (or) % CPU time spent in kernel space<br> |
| − | '''hi''': hardware irq (or) % CPU time spent servicing/handling hardware interrupts | + | '''ni''': user nice cpu time (or) % CPU time spent on low priority processes<br> |
| − | '''si''': software irq (or) % CPU time spent servicing/handling software interrupts | + | '''id''': idle cpu time (or) % CPU time spent idle<br> |
| − | '''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 | + | '''wa''': io wait cpu time (or) % CPU time spent in wait (on disk)<br> |
| + | '''hi''': hardware irq (or) % CPU time spent servicing/handling hardware interrupts<br> | ||
| + | '''si''': software irq (or) % CPU time spent servicing/handling software interrupts<br> | ||
| + | '''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<br> | ||
| + | |||
| + | [[category:monitoring]] | ||
Latest revision as of 22:58, 24 July 2013
To view individual CPU core information with top,
run top interactively, then hit "1" to see a detailed view like...
Tasks: 223 total, 2 running, 221 sleeping, 0 stopped, 0 zombie %Cpu0 : 28.4 us, 8.8 sy, 12.9 ni, 49.5 id, 0.0 wa, 0.0 hi, 0.3 si, 0.0 st %Cpu1 : 15.9 us, 7.6 sy, 16.2 ni, 58.0 id, 0.0 wa, 0.0 hi, 2.2 si, 0.0 st %Cpu2 : 8.6 us, 5.2 sy, 10.7 ni, 74.8 id, 0.0 wa, 0.0 hi, 0.6 si, 0.0 st %Cpu3 : 8.1 us, 3.6 sy, 7.5 ni, 80.8 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
Column information (not in man page)
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
