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Linux - Virtualization and Cloud This forum is for the discussion of all topics relating to Linux Virtualization and Linux Cloud platforms. Xen, KVM, OpenVZ, VirtualBox, VMware, Linux-VServer and all other Linux Virtualization platforms are welcome. OpenStack, CloudStack, ownCloud, Cloud Foundry, Eucalyptus, Nimbus, OpenNebula and all other Linux Cloud platforms are welcome. Note that questions relating solely to non-Linux OS's should be asked in the General forum.

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Old 04-08-2013, 09:48 AM   #1
ravisingh1
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Is base memory of virtual machine used when virtual machine is not running?


If I don't start my virtual machine, will the total memory be availiable for the host OS?
 
Old 04-08-2013, 11:34 AM   #2
TobiSGD
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Yes, a program that is not running (and a VM is nothing more than a program) will not use RAM.
 
Old 04-08-2013, 03:57 PM   #3
jefro
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There have been some reports that ram is not being made available to the system after some few vm's are shutdown, that is not normal. I have not seen that myself. In some unique vm's like bare metal there may be some overhead too. Some gui's for VM's might use a bit of ram also.

In normal use, a vm that is turned off will as TobySGD points out, will not use ram just like any other unused program.

Last edited by jefro; 04-08-2013 at 04:06 PM.
 
Old 04-09-2013, 03:41 AM   #4
ravisingh1
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Thanks a lot TobiSGD, jefro
 
  


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