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Overcommitting value in nova.conf

asked 2014-12-05 03:48:39 -0500


The OverCommitting values in nova.conf is user configurable ? OR is it a default value ? For example, the current values are 16:1 for CPU overcommitting and 1.5:1 for memory. Can we change to say 8:1 and 1:1 respectively?


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answered 2014-12-05 12:35:52 -0500

mpetason gravatar image

You can configure custom over commit rates. If you wanted to change CPU from 16:1 you would set the value in Nova.conf:


cpu_allocation_ratio = 16.0

Changed to:

cpu_allocation_ratio = 8.0


ram_allocation_ratio = 1.5

Changed to:

ram_allocation_ratio = 1.0

I believe it is a default value in that if you don't specify it will use the defaults. After you change the settings you'll need to restart Nova services to pull the new values.

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Got it Thanks :)

Nixon gravatar imageNixon ( 2014-12-06 01:38:40 -0500 )edit

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Asked: 2014-12-05 03:48:39 -0500

Seen: 5,335 times

Last updated: Dec 06 '14