VT

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VT

(character)
Vertical Tab, the mnemonic for ASCII 11.

Vermont State Information

Phone: (802) 828-1110
www.vermont.gov


Area (sq mi):: 9614.26 (land 9249.56; water 364.70) Population per square mile: 67.40
Population 2005: 623,050 State rank: 0 Population change: 2000-20005 2.30%; 1990-2000 8.20% Population 2000: 608,827 (White 96.20%; Black or African American 0.50%; Hispanic or Latino 0.90%; Asian 0.90%; Other 1.80%). Foreign born: 3.80%. Median age: 37.70
Income 2000: per capita $20,625; median household $40,856; Population below poverty level: 9.40% Personal per capita income (2000-2003): $27,680-$30,888
Unemployment (2004): 3.70% Unemployment change (from 2000): 1.00% Median travel time to work: 21.60 minutes Working outside county of residence: 21.50%

List of Vermont counties:

  • Addison County
  • Bennington County
  • Caledonia County
  • Chittenden County
  • Essex County
  • Franklin County
  • Grand Isle County
  • Lamoille County
  • Orange County
  • Orleans County
  • Rutland County
  • Washington County
  • Windham County
  • Windsor County
  • Vermont Parks

    Vt

    In aerodynamics, the true air speed.

    VT

    (1) (Virtualization Technology) The virtual machine capability in Intel's CPU chips. The VT circuits added virtual machine instructions to the x86 and Itanium families of CPUs. Introduced in 2004, the specific names are VT-x for the x86 and VT-i for the Itanium. The VT circuits in the CPU eliminate the need to paravirtualize (modify) the guest operating system to achieve maximum performance.

    VT enables the virtual machine monitor (VMM) to run at the most privileged level, and it accelerates transitions between the VMM and guest OS. It traps the calls to the hardware from the guest operating system, saves the CPU state and restores it after the VMM handles the event.

    VT for Directed I/O (VT-d)
    Introduced in 2008, VT for Directed I/O (VT-d) enables direct memory access (DMA) transfers between devices and guest OS memory without using the VMM as an interim stage. This allows network and graphics cards to be assigned to specific virtual machines for increased performance. For example, a second graphics card can be assigned to a VM running a CAD application, which must address the hardware directly, or a second network adapter can be assigned to a VM running a high-priority network application. See virtual machine and hardware virtualization.

    (2) See Video Toaster.

    (3) (Virtual Tributary) In SONET, a sub STS-1 rate, which is below 52 Mbps. A VT allows SONET to multiplex lower-capacity channels down to 64 Kbps, an important characteristic because SONET is used both as a carrier infrastructure and a customer-premises based service. A VT can operate at four speeds: 1.728 Mbps, 2.304 Mbps, 3.456 Mbps and 6.912 Mbps. A mixture of different capacity VTs can be combined into a VT Group and carried in a single STS-1. See OC.
    References in periodicals archive ?
    Intel Virtualization Technology provides hardware enhancements to Intel platforms that allow multiple operating systems and applications to run independently on the same machine.
    com), a provider of enterprise-class software for server virtualization and virtual infrastructure management, today announced impressive results in the recent Intel vConsolidate benchmark performance tests with Intel[R] VT FlexPriority - the latest extension in Intel Virtualization Technology (Intel VT).
    Technologies such as Intel Turbo Boost Technology, Intel Hyper-Threading Technology, integrated power gates, and Next-Generation Intel Virtualization Technology (VT) improved through extended page tables, allow the system to adapt to a broad range of workloads.
    Foundation stones are Fujitsu's proven and reliable PRIMERGY x86 servers incorporating Intel virtualization technology, Fujitsu ETERNUS DX family disk storage systems, and the Microsoft Windows Server 2008 R2 operating system with Hyper-V virtualization technology, which includes support for live migration.
    The sessions cover the business case for embedded virtualization, choosing embedded virtualization software, understanding how Intel Virtualization Technology (Intel-VT) makes virtualization possible and configuring and using a virtualized system.
    The Intel Xeon 5500 series features Intel Turbo Boost Technology, Integrated power gates and Intel Virtualization Technology FlexMigration.
    The chipset reportedly supports the newest Intel chipset technologies, including Intel Virtualization Technology for Directed I/O (Intel VT-d), version 3.
    Also announced is the commercial availability of the SUSE Linux Enterprise Virtual Machine Driver Pack, a bundle of paravirtualized network, bus and block device drivers that enable unmodified Windows and Linux guest operating systems to run with near native performance in virtual environments created with the Xen hypervisor technology integrated in SUSE Linux Enterprise and Intel Virtualization Technology and AMD Virtualization hardware.
    XenClient Bare Metal Hypervisor - Based on the proven Citrix XenServer technology, and leveraging Intel virtualization technology, XenClient is a new bare metal client hypervisor that enables each virtual machine to run side-by-side directly on the hardware, rather than hosted within the installed operating system.