KVM Technology Review and Roadmap Update

  • KVM is a relatively small piece of code, leveraging Linux for much functionality.  This makes KVM easy to secure and very flexible in meeting future needs.
  • Leveraging Linux means that KVM automatically gains the power of Linux’s hardware support, memory management, network utilities, cgroups, SELinux, etc.
  • Features: RHEL6.3 KVM has all the features of modern hypervisors, without needing 3rd party tools: live snapshots, virtualized disk drivers (VIRTIO), live migration, live block migration, USB passthrough, guest power management, etc.
  • Performance: RHEL 6.3 + KVM holds the top 7 SPECvirt spots on HP and IBM hardware, with metrics showing ~20%+ better performance than VMWare.
  • Single Guest Scalability: Now supports 160 vCPUs and 2TB RAM per guest (with no additional licensing costs!)
  • RHEL 7.0 will include virtual PCI bridges and will have a new Virtio-SCSI block device, enabling thousands of devices per virtual machine.
  • RHEV scales up to 200 host nodes per cluster.
  • Compare the above numbers with VMWare
  • KVM has achieved World Record IOPS: 1,402,720 IOPS on a IBM x3850 X5 for 8KB request using 7 SCSI pass-through devices.. For 1 KB requests, can achieve 1.65M IOPS.
  • RHEV 7 will support Windows power virtualization
  • RHEL 6.3 brings vCPU and memory hotplug to guests
  • KVM has achieved CC-EAL4+ certification with RHEV 5, and is in process of certification with RHEV 6, with sVirt (SELinux wrapped around guests).
  • Decommissioned guest storage can be scrubbed, meeting PCI-DSS standards.
  • Open Virtualization Alliance promotes open source virtualization and KVM ecosystem.

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