On 10.06.2015 01:05, Vivi L wrote: > Kashyap Chamarthy <kchamart <at> redhat.com> writes: > > >> You might want re-test by explicitly setting the 'page' element and >> 'size' attribute? From my test, I had something like this: >> >> $ virsh dumpxml f21-vm | grep hugepages -B3 -A2 >> <memory unit='KiB'>2000896</memory> >> <currentMemory unit='KiB'>2000000</currentMemory> >> <memoryBacking> >> <hugepages> >> <page size='2048' unit='KiB' nodeset='0'/> >> </hugepages> >> </memoryBacking> >> <vcpu placement='static'>8</vcpu> >> >> I haven't tested this exhaustively, but some basic test notes here: >> >> https://kashyapc.fedorapeople.org/virt/test-hugepages-with-libvirt.txt > > Current QEMU does not support setting <page> element. Could it be the > cause of my aforementioned problem? > > unsupported configuration: huge pages per NUMA node are not supported > with this QEMU >
So this is explanation why the memory for you guest is not backed by hugepages. Can you please share the qemu command line that libvirt generated for your guest? Michal -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
