Loading

×Sorry to interrupt
Uncaught ReferenceError: addCTracking is not defined
throws at https://kb.vmware.com/resource/KM_TealiumTrackingJS?v=0.5:100:1

Refresh

Cookie Preference Center

General Information on cookies

When you visit our website, we use cookies to ensure that we give you the best experience. This information does not usually directly identify you, but it can give you a more personalized web experience. Because we respect your right to privacy, you can choose not to allow some types of cookies by clicking on the different category headings to find out more and change your settings. However, blocking some types of cookies may impact your experience on the site and the services we are able to offer. Further information can be found in our

Cookie Policy.

Strictly Necessary

Strictly Necessary

Always Active

Strictly Necessary

Strictly necessary cookies are always enabled since they are essential for our website to function. They enable core functionality such as security, network management, and website accessibility. You can set your browser to block or alert you about these cookies, but this may affect how the website functions. For more information please visit www.aboutcookies.org or www.allaboutcookies.org.

Cookie Details‎

Performance

Performance

Performance

Performance cookies are used to analyze the user experience to improve our website by collecting and reporting information on how you use it. They allow us to know which pages are the most and least popular, see how visitors move around the site, optimize our website and make it easier to navigate.

Cookie Details‎

Please confirm your settings by refreshing the page.

Functional

Functional

Functional

Functional cookies help us keep track of your past browsing choices so we can improve usability and customize your experience. These cookies enable the website to remember your preferred settings, language preferences, location and other customizable elements such as font or text size. If you do not allow these cookies, then some or all of these services may not function properly.

Cookie Details‎

Advertising

Advertising

Advertising

Advertising cookies are used to send you relevant advertising and promotional information. They may be set through our site by third parties to build a profile of your interests and show you relevant advertisements on other sites. These cookies do not directly store personal information, but their function is based on uniquely identifying your browser and internet device.

Cookie Details‎

Advertising Cookies

Consent Leg.Interest

Select All Vendors

Select All Vendors

Select All Hosts

Select All

Clear Filters

Information storage and access

Apply

Confirm My Choices Reject All Allow All

Skip to main content

My Subscriptions

Loading

Knowledge Base

Host power management causes problems with guest timekeeping on Windows hosts (1227)

Last Updated: 8/6/2020Categories: TroubleshootingTotal Views: 126783Language:
Chinese (Simplified)JapaneseEnglish

5 like this article

Subscribe to get an email
newsletter with new updates

5 people found this helpful Please provide article feedback:

Details

The host is a computer running Windows that has power management features in the hardware that varies the processor's operating speed.

When the host processor speed increases, the guest operating system's real-time clock (RTC) runs too fast.

In the vmware.log file, you see the error:

[msg.log.error.unrecoverable] VMware Workstation unrecoverable error: (vmx) ASSERT /build/mts/release/bora-528992/bora/vmcore/vmx/main/timeTracker_user.c:237 bugNr=148722

Solution

This problem can occur on some host computers that use Intel SpeedStep, AMD Cool 'n' Quiet, or other similar power-saving technologies that vary the processor speed.

Note: This article is designed for hosts running Windows for the listed product versions. For Linux hosts running these product versions, see Host power management causes problems with guest timekeeping on Linux hosts (1591).

Workaround

You must specify the correct maximum CPU speed of the physical hardware in the global configuration file (config.ini).

Note: Before making any modifications to the config.ini, back up your virtual machine.

To specify the correct maximum CPU speed:

Find the maximum speed of the host computer's CPU. To do this, open Control Panel > System. Note the speed rating of the processor (CPU) written in the model designation text. This may be higher than the current operating speed of the processor noted here. This value can often also be obtained from the computer's BIOS diagnostic screen when starting the computer.

Find the config.ini file:

Windows 2000 or XP – %AllUsersProfile%\Application Data\VMware\<VMware-Product>\config.ini

Windows Vista, Windows 7, Windows 8, Windows Server 2008 R2, or Windows Server 2012 – C:\ProgramData\VMware\<VMware-Product>\config.ini

Note: This file is normally created when the VMware product is installed. Make sure that Show hidden files and folders is enabled under Tools > Folder options > View. However, if the file does not exist, create a new text file in the appropriate location as described above, then add the required lines to form a valid config.ini file. For the specifications of the file, see Creating and editing config.ini on Windows hosts (1754).

Edit config.ini, and add these lines.

host.cpukHz = "1700000"

Modify the cpukHz value according to the value of the physical computer's maximum CPU speed from step 1.

host.noTSC = "TRUE"

ptsc.noTSC = "TRUE"

This enables a mechanism that keeps the guest's clock accurate even when the time stamp counter (TSC) is slow.

The example above is for a computer that has a maximum CPU speed of 1700 MHz (or 1.7 GHz). The value entered on this line must be in KHz. To convert the speed from MHz, multiply by 1000. To convert from GHz, multiply by 1000000.

Restart the VMware Authorization service for the changes to take effect. Click Start > Control Panel > Administrative Tools > Services. Right-click VMwareAuthorization Service and click Restart.

In addition, verify that the VMware Tools in the guest operating system is set to enable time synchronization:

Open the VMware Tools toolbox application by double-clicking the VMware icon in the system notification area (tray).

Note: The VMware Tools control panel can also be run by opening C:\Program Files\VMware\VMware Tools\VMControlPanel.cpl.

Click Options, select Time synchronization between the virtual machine and the host operating system.

Additional Information

For additional information about timekeeping, see Timekeeping in VMware Virtual Machines.

For translated versions of this article, see:

Español:

Português:

日本語: ホストの電源管理により、Windows ホストのゲスト タイムキーピングで問題が発生する (2078877)

简体中文: Windows 主机上的主机电源管理导致客户机计时出现问题 (2061919)

Detectable by VMware SkylineTM

Actions

Copy

link to clipboard
copied!

Print

Language:
Chinese (Simplified)JapaneseEnglish

Attachments

Additional Resources

KB
•
End Of General Availability of the Free vSphere Hypervisor (ESXi 7.x and 8.x) (2107518)

KB
•
VMware vRealize Operations Manager でノードのホスト名を変更する (2108689)

Results 1-2 of 2

Ask The Community

Get answers quickly from VMware experts in the community

Post Subject

CONTINUE IN COMMUNITIES

Related Products:

VMware Workstation Pro

VMware Workstation Player

VMware Workstation

VMware Server

VMware Player

VMware GSX Server

Related Versions:

VMware Workstation Pro 14.x (for Windows)

VMware Workstation Pro 12.x (Windows)

VMware Workstation Player 14.x (Windows)

VMware Workstation Player 12.x (Windows)

VMware Workstation 9.x (Windows)

VMware Workstation 8.x (Windows)

VMware Workstation 7.x (Windows)

VMware Workstation 6.x (Windows)

VMware Workstation 5.x (Windows)

VMware Workstation 4.x (Windows)

VMware Workstation 11.x (for Windows)

VMware Workstation 10.x (Windows)

VMware Server 2.0.x (Windows)

VMware Server 1.0.x (Windows)

VMware Player Pro 7.x (Windows)

VMware Player 7.x (Windows)

VMware Player 6.x (Windows)

VMware Player 5.x (Windows)

VMware Player 4.x (Windows)

VMware Player 3.x (Windows )

VMware Player 2.x (Windows)

VMware GSX Server 3.x (Windows)

view all

Take Our Survey

Was this article helpful?

YES

NO

Copyright © 2005-2024 Broadcom. All Rights Reserved. The term “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.

Terms of Use

Your California Privacy Rights

Privacy

Accessibility

Cookie Settings

Support Assistant