On 01/24/2018 07:53 PM, Adnan Mundres wrote: > In my setup I am using qemu-kvm without openstack. I am trying to use ovs with dpdk. In my xml file I added following lines for the dpdkvhostuser > <cpu mode='host-passthrough'> <numa> <cell id="0" cpus="0-6" memory="16777216" unit='KiB' memAccess="shared"/> </numa> </cpu> I have enabled hugepages during boot time> ot@mvmgptb11hyp01 hyp-1]# cat /proc/meminfo | grep -i hugeAnonHugePages: 126976 kBHugePages_Total: 100HugePages_Free: 80HugePages_Rsvd: 0HugePages_Surp: 0Hugepagesize: 1048576 kB > But When I start my vm (virsh start vm1.xml) I am seeing that this vm is not using memory from hugepages, rather it is taking memory from total memory. When I checked the log file I see that it is using > -object memory-backend-file,id=ram-node0,prealloc=yes,mem-path=/var/lib/libvirt/qemu/ram,share=yes > It should use backend memory as following > -object memory-backend-file,id=ram-node0,prealloc=yes,mem-path=/dev/hugepages/libvirt/qemu/vm1,share=yes > Any idea how can I use memory from hugepages What version of libvirt are you using? There were some fixes made recently. Try latest git HEAD and if the issue still persists please file a bug report attaching domain XML and debug logs. I'm unable to reproduce with the current git. Michal -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list
