Restricting CPU Core Access

UNIX Solaris
1

Hi all.

I've had a quick look around but cant see anything exactly matching my requirements.

I have a new T2000 running S10. Im looking to restrict the no. cores that a S10 non-global zone can use to 1 only. The box is single CPU but 8core.

I want to do this to save on some software licensing.

Any help much appreciated

Cheers

2

This should work:

# zonecfg -z myzone
zonecfg:myzone> add dedicated-cpu
zonecfg:myzone:dedicated-cpu> set ncpus=4
zonecfg:myzone:dedicated-cpu> end

Alternatively, create a processor set, a resource pool and bind your zone to it.

3

Thanks for the reply.

Does this on relate to actual CPU access though? I'm actually wanting to restrict the number of cores that a zone can access as there's only a single CPU?

Cheers

4

With a 8 core T2000, each core supporting 4 threads, you have 32 virtual CPUs.

Have a look at

psrinfo -v

output.

5

Right, i get you. You cant limit core's as such, you limit the number of virual CPU's ie 4CPU's = 1core.

Excellent stuff, i get it....took a while though eh :slight_smile:

Thanks again, thats great

Cheers