Intel® VTune™ Profiler User Guide

User Guide

Contents

Profile Targets in the Hyper-V* Environment

Configure your Windows* system to enable hardware event-based performance analysis in the Hyper-V virtualization environment.
VTune
Profiler
 supports performance profiling in the Hyper-V environment with some limitations applicable to the event-based sampling collection. So, before you start the analysis, make sure your system configuration satisfies the requirements.

Verify Your System Configuration for Hardware Analysis

  • For the hardware analysis in your Hyper-V environment, make sure your system runs on:
    • Intel microarchitectures code named Skylake, Goldmont, or later;
    • Windows 10 RS3 operating system (version 1709) or later. To check the system version, use the
      winver
       command.
  • Run the
    msinfo32
     command to make sure the Hyper-V is enabled and running.
    The
    System Summary
     in the
    System Information
     dialog box should show the
    Virtualization-based security
     item as Running:
If your system does not meet the profiling requirements but you plan to run hardware event-based sampling analysis with
VTune
Profiler
, make sure to disable the
Hyper-V
 feature in the system settings.

Disable the Credential Guard and Device Guard on Hyper-V

The Hyper-V has optional security features: Device Guard and Credential Guard. When either or both of them are enabled, accessing non-architectural PMU MSRs triggers (required for the driver-based hardware event sampling analysis) a general protection fault. For example, offcore response MSRs and uncore related MSRs are non-architectural MSRs. To collect these events, you must disable the security features as follows:
  1. Make sure the security features are running on your system:
    1. Run the
      msinfo32
       command to open the
      System Information
       dialog.
    2. In the
      System Summary
      , check whether the
      Virtualization-based Security Services Running
       item includes
      Hypervisor enforced Code Integrity
       and/or
      Credential Guard
       values.
  2. Disable these security features by running the Microsoft* DG-CG-Readiness-Tool, available at https://www.microsoft.com/en-us/download/details.aspx?id=53337:
    1. Open Powershell as an administrator and go to the tool installation directory.
    2. Run the tool as follows:
      .\DG_Readiness_Tool_v2.1.ps1 -Disable -CG -DG
    3. Reboot the system.
    4. Make sure the device guard is turned off. The output from
      msinfo32
       should NOT include either
      Hypervisor enforced Code Integrity
       or
      Credential Guard
      .

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804