Hello, On an 8 socket Westmere host I am attempting to run a single guest and characterize the virtualization overhead for a system intensive workload (AIM7-high_systime) as the size of the guest scales (10way/64G, 20way/128G, ... 80way/512G). To do some comparisons between the native vs. guest runs. I have been using "numactl" to control the cpu node & memory node bindings for the qemu instance. For larger guest sizes I end up binding across multiple localities. for e.g. a 40 way guest : numactl --cpunodebind=0,1,2,3 --membind=0,1,2,3 \ qemu-system-x86_64 -smp 40 -m 262144 \ <....> I understand that actual mappings from a guest virtual address to host physical address could change. Is there a way to determine [at a given instant] which host's NUMA node is providing the backing physical memory for the active guest's kernel and also for the the apps actively running in the guest ? Guessing that there is a better way (some tool available?) than just diff'ng the per node memory usage...from the before and after output of "numactl --hardware" on the host. Thanks Vinod -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
