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I am new to Glance. And I have a quesiton, what is the difference between the toal cpu usage and cpu usage in processes list?

For example：

enter image description here

CPU usage of PID 9303 is 100%, but in top left corner, the total cpu usage shows only 3.9%，why?

And would it cause any problem to server if the cpu usage of any process is almost 100% ?

Kuo-hsuan Hsu
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  • it is normal for xvnc to reach 100% cpu usage. For your question, I do not know the exact answer, but I believe it shows 100% for a single core. – Bhavya Gupta Apr 24 '20 at 06:54

1 Answers1

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The 100% CPU usage is for a single core. You have 32 cores in total. If you add up CPU% of all the processes and divide it by 32 cores, you get a total CPU usage of approx 4% which is exactly what is shown in the top.

Bhavya Gupta
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  • Your suggestion is correct, i find evidence in document:https://glances.readthedocs.io/en/latest/aoa/ps.html `CPU% : % of CPU used by the process If Irix/Solaris mode is off (‘0’ key), the value is divided by logical core number` – Kuo-hsuan Hsu Apr 24 '20 at 07:45