How can VDC allocate cpu and memory resources?

Hi,
   I know VDC on nexus 7k can allocate interface ,fib acl tcam resources,
  but how can vdc allocate memory and cpu resouces an sup2/sup2e and i/o module!
   for example.
   vdc  1 get at least 20% cpu , and he can reache beyond 20% cpu  if cpu ultilization is low. but if system is busy , he just can get 20
% cpu resouces. I know cpu resources is difficult to config like this.
   or memory , can one vdc limit to 20% memory.
   thank you!
tom

Hi,
in this documents do you have a way to make something that you want.
http://d2zmdbbm9feqrf.cloudfront.net/2012/usa/pdf/BRKDCT-2121.pdf
Thanks.

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