问题
When I check azure monitoring tool, CPU usages are shown in CPU time
min: 4.69s
max: 2008.08 s
avg : 207.63 s
I am familiar with CPU% which makes sense as in application requiring cpu cycles.
how does the above time correspond to percentage? What would be the max in seconds which corresponds to 70 or 100% cpu usage?
note : cpu is 4 cores
On a different instance, I noticed in a 60 second window
min: 0
max : 133.83
avg : 19.61
Based on below answers (see Nachiket's explanation in comments as well) 133.83 is a product of cpu time multiplied by cores ( in my case 4 cores)
Cpu utilization in this case is 133.83/(60*4) = 54.1%
回答1:
Some cloud monitoring tools give resource usage in standard time measures. (seconds, hours, days etc.)
If you have usage in seconds like,
min: 4.69s
max: 2008.08 s
avg : 207.63 s
Then you can find out usage in % from above using definition of %.
% utilization = (resource used time / total resource availability time)
ex: if cpu was available for 100 seconds and out of that 80 seconds it was used then
% utilization = 80/100 = 80% CPU utilization
From your given time, total available time is missing. Find that out and use above formula.
% utilization = avg. usage/total availability
no. of cores shouldn't matter as that is present in both cases.
% utilization = ( (no. of cores * avg util)/(no. of core * total availability))
I am not sure about azure cloud monitoring but if it is providing same then you can use it.
来源：https://stackoverflow.com/questions/28240978/how-to-interpret-cpu-time-vs-cpu-percentage