Disabling the balloon driver. VMware ballooning is one of the hard concept to grasp. The virtual machine has no knowledge if the memory is mapped to physical memory or to a disk. Join 78 other followers. Yes, this was for a Linux guest. Power on the virtual machine.

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We have the host physical memory, guest physical memory, but also virtual memory which is within each VM and where the applications run.

Disable ballooning?

VMtools is required as it includes the vmmemctl module which makes ballooning possible. Disab,e unfortunately most specialists insist on disabling the mechanism. Results of two experiments are shown on this graph: Comments 0 Trackbacks 0 Leave a comment Trackback.

Server Fault works best with JavaScript enabled. This topic is mostly for folks just starting with virtualization and learning about it.

Each VM has a driver installed via VMware tools. You are commenting using your WordPress. And then you close it down.

Rex 7, 3 22 Now this statement can be interpreted in two ways. Above all VMware do not recommend that the balloon memory driver should ever be disabled, and that the VMware Tools should be installed and up to date in every VM.


I know this is an old article, but i found it whilst researching a similar issue, and here’s some useful info I located – especially the bits relating to the unwinding of balloon driver allocations.

If you identify the ballooned VMs programmatically, then you’d need to supply a destination to your script to move them to. No new pages are provided to virtual machines. To disabble knowledge you cannot activate a kernel visable in a live Windows installation like in Linux. This site uses cookies. I came across my previous question I posed on yellow bricks above regarding SQL and vmware best practices not necessarily converging. You have two options, ensure that the host or VM has sufficient physical RAM to meet requirements, or allow the balloon memory driver to claw back memory from VMs so over commitment is possible.

Read about how we use cookies and how you can control them here. Using figures from vSphere 4 the following will take place:.

The VMkernel will use a specific memory reclamation technique depending on the level of the host free memory. Do you guys have a view on this from experience?

Disable Memory Balloon in VMWare VM

Notify me of new comments via email. The host will then reallocate that memory to other virtual machines. This picture shows the three levels of memory in a virtual environment. You should see any existing datastores that reside on SSD storage.


Shut down the virtual machine. Fill in your details below or click an icon to log in: For more information, see the vSphere Resource Management Guide. The Registry Editor window opens. To understand ballooning we would have to take a look at the following picture:.

memory – “Unballooning” RAM that’s been ballooned by VMware – Server Fault

Having the hypervisior vmkernel swap to disk is a failsafe, a get out of jail free! Comments very interesting, these non-vmware expert or aka — MS people. This is found under the Configuration tab for the host. Because the Guest OS is fully aware of the memory state, the virtual machine will keep on performing as long as it has idle or free pages.