Solo emulation in 8MMINILPD4-EVK

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Solo emulation in 8MMINILPD4-EVK

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ko-hey
Senior Contributor II

Hi all,

 

How can I do solo emulation in 8MMINILPD4-EVK?

I wan to estimate single core CPU performance with 8MMINILPD4-EVK so I tried maxcpus parameter which is described in Linux Release Notes but it can't be limited the CPU numbers.

Here are my steps.

$ setenv kernelargs maxcpus=1
$ saveenv
$ boot

 

On the other hand, I tried disable/enable cores at kernel runtime referring following link and it success.

https://variwiki.com/index.php?title=CPU_freq_and_num_of_cores

 

Q1.

Could you tell me why the maxcpus parameter doesn't work ?

 

Q2.

Can we get same result of estimation with disabling at kernel runtime ?

 

Ko-hey

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joanxie
NXP TechSupport
NXP TechSupport

I think you should add this after mmcargs, like

"$setenv mmcargs 'setenv bootargs console=${console},${baudrate} earlycon=${earlycon},${baudrate} root=${mmcroot} maxcpus=1'
$ saveenv"

yes you can disable this in the kernel too

 

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joanxie
NXP TechSupport
NXP TechSupport

I think you should add this after mmcargs, like

"$setenv mmcargs 'setenv bootargs console=${console},${baudrate} earlycon=${earlycon},${baudrate} root=${mmcroot} maxcpus=1'
$ saveenv"

yes you can disable this in the kernel too

 

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