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killr
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When to add additional memory to VM?

How does one tell when to add more memory to a virtual. I am quite new to vm and don't understand all of the settings. I am getting some alarms set off, but I don't see any ballooning. Can someone explain or direct me to a doc that explains what all of the settings are Active,Granted,Consumed & Balloon are or how to tell when to give the VM more memory

Thanks

Found a patch that is keeping the memory in check.

Thanks for everyones help on this!!

Killr

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TobiasKracht
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I mean that oveall amount of your RAM is 4 Gb and you config VM to use 2 Gb, your system may run slow.

StarWind Software R&D

StarWind Software R&D http://www.starwindsoftware.com

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kesparlat
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Here we go:

Granted is the total of RAM asigned to your VM. In example 4 Gb.

Consumed is the total RAM consumed in the host. In example this could be 2,5 Gb.

Balloned is the amount of memory that is not in use, and ESX host reclaims it to the Guest OS. This reclamation is inflating a process that consumes RAM, and doing that the guest OS is forced to swap the unactive memory. (this process is a balloon that can be inflated). In example this could be 500 Mb.

Active is the memory consumed physically by your OS (this is real memory). In example this coulb be 2Gb.

The numbers in the example should appear like that:

Granted: 4Gb

Consumed: 2,5Gb

Active 2 Gb

Balloned: 500Mb

As you can see you are giving 4 Gb of RAM to your VM, but physically you are wasting only 2 Gb.

I hope this can help you.

Regards.

TobiasKracht
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Note, that if you will map to VM more than 50% of all RAM it can make run your system sluggish.

StarWind Software R&D

StarWind Software R&D http://www.starwindsoftware.com
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LucasAlbers
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Tobias,

could you explain your statement?

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TobiasKracht
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I mean that oveall amount of your RAM is 4 Gb and you config VM to use 2 Gb, your system may run slow.

StarWind Software R&D

StarWind Software R&D http://www.starwindsoftware.com
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