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Re: Disable a CPU

 
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L. Younes
Occasional Advisor

Disable a CPU

Hello,
Is there a way to disable a cpu in L3000 series ?.

Something Similar to asr-disable in the Sun OpenBoot.

I need to run some benchmarking and use only two cpus out of the four on the server.

Thanks
5 REPLIES 5
Armin Feller
Honored Contributor
Solution

Re: Disable a CPU

Hi,

I think the command is:

CPUconfig 0 off

that would disable CPU 0.

Regards,
Armin

Armin Feller
Honored Contributor

Re: Disable a CPU

Here an exaple for a D-Class:

--------------------------------------------

HOWTO DISABLE CPU for D SERIES
------------------------------
The command to disable a processor is available in PDC. Go to the
SERvice menu and use the CPU command.
The syntax is:
CPUconfig [] [ON|OFF]
You will need to make sure the machine goes thru a power on cycle before
booting HP-UX.
T G Manikandan
Honored Contributor

Re: Disable a CPU

Reboot the machine and
Interrupt the boot by pressing any key within the 10 seconds
type CO (enter configuration mode)
type CPU to find out the processors

co> CPU OFF

reset to reboot the machine
L. Younes
Occasional Advisor

Re: Disable a CPU

Thank you both for your Help.
However I'd like to get more in depth concerning the l3000
(rp5470) boot process (before loading the OS I searched docs.hp.com and nothing came up. Did I miss anything ?

Any docs you know about?

Thanks Again.
L. Younes
Occasional Advisor

Re: Disable a CPU

errata: it's a rp5470 not a l3000