Issue Difference between "CPU usage" in "System information" and "CPU total usage" in "Process list"

[Pinocchio]

Hi,

I have a 12 core server hosting my 4 websites. Right now, I'm getting this in System Information:

If I understand this correctly, these are CPU cores currently used.

At the same time, this is "CPU total usage" in "Process list":

So, I'm using 10 of 12 CPU cores but only 6% total CPU usage? What I know is that thing are getting a little slow. What's the deal?

 

[Pinocchio]

Was that a silly question?

 

[Hex]

If I understand this correctly, these are CPU cores currently used.

This isn't the CPU cores, this is the percentage used from all cores during that time.
Your CPU usage is between 5% to 11.9% during 15min

So, I'm using 10 of 12 CPU cores

You're using approximately. 1.1 core out of 12 cores within 15min period.


If you want a more detailed view of everything on Plesk, use Advanced Monitoring.

 

[Pinocchio]

Thanks a lot

Actually, the following answer seems to say something different: Resolved - How to display CPU usage values in percentage?

"On a 12-core-processor a cpu load of 6 means that the system has a 50% overall load"

 

[IgorG]

Thanks a lot

Please use Like button.

 

[Pinocchio]

Sorry, I was typing a message edit while you responded:

Actually, the following answer seems to say something different: Resolved - How to display CPU usage values in percentage?

"On a 12-core-processor a cpu load of 6 means that the system has a 50% overall load"

 

[Pinocchio]

"The cpu usage gives you the load of the total of all cpu cores where 1 is 100% of one core. On a 12-core-processor a cpu load of 6 means that the system has a 50% overall load" (Resolved - How to display CPU usage values in percentage?)

This seems different from the following:

This isn't the CPU cores, this is the percentage used from all cores during that time.

 

[Bitpalast]

Indeed a cpu utilization of 10.46 during the past minute means that in order to process all commands directed to the processor without wait you'd need 10.46 cpu cores at the given time. The value shown in the process list should be the same (or at least very similar, it can never be the same, because one is an aggregation and average, the other one is a momentary status).

Normally there is not much difference between the values. On your "system information" page however and on the "process list" pages please make sure to hit the "reload" ("update") buttons to get the latest data, else the pages might display outdated information.