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.
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