Activate/Deactivate Processors

[hmoke]

Hi,

I'm looking for an AIX command to activate or deactivate
one or more processors on a IBM RS/6000

Thanks !

 

[PSD]

hmoke,

I have never tried to do this but it should work.

rmdev -l proc1

This will leave the processor as defined in the ODM but not available i.e. deactivated.

mkdev -l proc1

This will make the processor available i.e. activated.

I cannot see a logical reason for doing this..but if you have CPU power to spare then you are a very lucky man.

If you are trying to manage which processors are used I would be inclined to use the bindprocessor command, this ties processes to processors.

Cheers PSD
IBM Certified Specialist - AIX V4.3 Systems Support
IBM Certified Specialist - AIX V4 HACMP

 

[aixqueen]

You didn't say if it is an older microchannel?

http://www.rs6000.ibm.com/doc_link/en_US/a_doc_lib/aixprggd/genprogc/ctrl_processor_use.htm

cpu_state -l

cpu_state -d proc1

My understanding is that it does not currently work on pci machines...but with the new P690 there will be new features for this.