Hello All, I am using centos6.5 x64 on a server with 48 G RAM and 8 Cores.Managed by Ovirt There is only one running VM with RAM 34 G and with 6 VCPU (pinned to proper numa nodes) from top top - 06:42:48 up 67 days, 20:05, 1 user, load average: 0.26, 0.20, 0.17 Tasks: 285 total, 2 running, 282 sleeping, 0 stopped, 1 zombie Cpu(s): 1.0%us, 1.4%sy, 0.0%ni, 97.5%id, 0.1%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 49356468k total, 33977684k used, 15378784k free, 142812k buffers Swap: 12337144k total, 0k used, 12337144k free, 343052k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 101 root 25 5 0 0 0 R 27.4 0.0 5650:04 [ksmd] 26004 vdsm 0 -20 3371m 64m 9400 S 9.8 0.1 1653:27 /usr/bin/python /usr/share/vdsm/vdsm --pidfile /var/run/vdsm/vdsmd.pid 20963 qemu 20 0 38.5g 33g 6792 S 3.9 71.6 5225:43 /usr/libexec/qemu-kvm -name Cinder -S -M rhel6.5.0 -cpu Nehalem -enable-kvm -m 34096 -realtime mlock=off -smp 6,maxcpus=160,sockets=80,c from /sys/kernel/mm/ksm pages_unshared 7602322 pages_shared 207023 pages_to_scan 64 pages_volatile 31678 Any idea why ksmd is not coming to normal CPU usage ,on a different server ksmd was disabled and for testing when i enabled it initially CPU usage was high but later settled down to 3% ,in that host i have 4 VMs running. Before turning off ksmd can any one help me find out why ksmd is behaving like this.Initially it had 2 virtual machines,because of high CPU utilization of this guest other is migrated to another host. Thanks