[openstack-dev] Reason for mem/vcpu ratio in default flavors

Vishvananda Ishaya vishvananda at gmail.com
Thu Dec 11 21:02:46 UTC 2014

Probably just a historical artifact of values that we thought were reasonable for our machines at NASA.


On Dec 11, 2014, at 8:35 AM, David Kranz <dkranz at redhat.com> wrote:

> Perhaps this is a historical question, but I was wondering how the default OpenStack flavor size ratio of 2/1 was determined? According to http://aws.amazon.com/ec2/instance-types/, ec2 defines the flavors for General Purpose (M3) at about 3.7/1, with Compute Intensive (C3) at about 1.9/1 and Memory Intensive (R3) at about 7.6/1.
> -David
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