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тАО06-07-2010 08:11 AM
тАО06-07-2010 08:11 AM
Hi,Can anyone clarify the concept of bound & unbound CPU in vpar..
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тАО06-07-2010 09:14 AM
тАО06-07-2010 09:14 AM
Solution
Bound CPUs are attached to a vPar and cannot be removed while the vPar is up and running. IO interupts use the bound CPUs.
The unbound CPUs can be added or removed with the vparmodify command. You can add and remove these CPUs to manage performance levels across vPars. e.g vPar1 needs more CPU and vPar3 doesn't need all the CPUs it has - Move CPUs from vPar3 to vPar1.
The unbound CPUs can be added or removed with the vparmodify command. You can add and remove these CPUs to manage performance levels across vPars. e.g vPar1 needs more CPU and vPar3 doesn't need all the CPUs it has - Move CPUs from vPar3 to vPar1.
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тАО06-07-2010 11:40 PM
тАО06-07-2010 11:40 PM
Re: Bound and unbound cpu in vpars
Just to add to what Bill said, for "reasonable" IO performance you should probably consider using a rule of thumb of making about 25% of the CPUs in a vPar "bound" - otherwise you can end up with all the IO interrupts running on a small number or single CPU, which can effect performance...
You only need to worry about bound CPUs on vPars running 11.11 - vPars on 11.23 and 11.31 don't have the concept of bound CPUs.
HTH
Duncan
I am an HPE Employee
You only need to worry about bound CPUs on vPars running 11.11 - vPars on 11.23 and 11.31 don't have the concept of bound CPUs.
HTH
Duncan
I am an HPE Employee
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тАО06-23-2010 05:22 AM
тАО06-23-2010 05:22 AM
Re: Bound and unbound cpu in vpars
Thanks all
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