The VMware Knowledge Base provides support solutions, error messages and troubleshooting guides
Disabling the balloon driver (1002586)
Disabling ballooning via the vSphere Client
To set the maximum balloon size to zero:
- Using the vSphere Client, connect to the vCenter Server or the ESXi/ESX host where the virtual machine resides.
- Log into the ESXi/ESX host as a user with administrative rights.
- Shut down the virtual machine.
- Right-click the virtual machine listed on the Inventory panel and click Edit Settings.
- Click the Options tab, then under Advanced, click General.
- Click Configuration Parameters.
- Click Add row and add the parameter
sched.mem.maxmemctlin the text box.
- Click on the row next to it and add
0in the text box.
- Click OK to save changes.
- SSH to the ESXi/ESX host.
- Change directory to the datastore where the virtual machine's configuration file resides.
- Back up the virtual machine's configuration file.
- Edit the virtual machine's configuration file (
virtual_machine_name.vmx) and remove this entry:
sched.mem.maxmemctl = "0"
- Save and close the file.
- Power on the virtual machine.
.vmx) for the virtual machine to remove the entry.
Disabling ballooning via the Windows registry
To disable ballooning on the virtual machine:
Note: This procedure modifies the Windows registry. Before making any registry modifications, ensure that you have a current and valid backup of the registry and the virtual machine. For more information on backing up and restoring the registry, see the Microsoft Knowledge Base article 136393.
- Log into the guest OS.
- Click Start > Run, type
regedit, and press Enter. The Registry Editor window opens.
- Navigate to:
- Change the Start key from
- Save the setting and restart the guest OS.
Disabling ballooning via VMware Tools uninstallation/reinstallation
- Uninstall VMware Tools from the guest OS.
- Reinstall VMware Tools using the Custom Settings option, and deselect the Memory Control Drivers.
Additional InformationFor additional information, see Troubleshooting ESXi/ESX virtual machine performance issues (2001003).
Note: The links in this article were correct as of April 12, 2013. If you find a link is broken, provide feedback and a VMware employee will update the link.
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