Re: Scheduling of VCPUs and allocation of Guest Physical Memory

[Anthony Liguori <anthony@codemonkey.ws>]

Sukanto Ghosh wrote:
> Hi all,
>
> I have two questions regarding KVM:
>
> i) Is a VCPU scheduled like a normal Linux process

A normal process.

> or there is some mechanism by which performance guarantees can be 
> provided to the VCPUs ?

FWIW, there are various mechanisms to do scheduler tuning in Linux.  
cpusets and cgroups both provide mechanisms to ensure "performance 
guarantees".

> ii) Who does the allocation of host physical memory to the guest, is 
> it KVM module or the associated QEmu process ?

The QEMU process allocates the memory via malloc().

> Also, I would be glad if you can provide me pointers to some 
> documentation/paper/literature which discusses KVM in greater detail 
> than what the paper "kvm: The Linux Virtual Machine Monitor" presents.

The only other reference is the code itself.

Regards,

Anthony Liguori

> Thanks,
> Sukanto
> -- 
> To unsubscribe from this list: send the line "unsubscribe kvm" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html