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Re: [Xen-devel] A question no one can answer

  • To: "Robert Stober" <rstober@xxxxxxxxxxxx>
  • From: weiming <zephyr.zhao@xxxxxxxxx>
  • Date: Thu, 14 Feb 2008 22:01:30 -0500
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Thu, 14 Feb 2008 19:01:53 -0800
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You mean QoS on memory bandwidth? It's an interesting question. (there are similar problems like QoS on shared L2)

I think it's hard to do.  Even for a native OS, it may only control this indirectly by adjusting the CPU time slice. And I don't think any commercial OS has implemented such feature yet.


On Thu, Feb 14, 2008 at 9:27 PM, Robert Stober <rstober@xxxxxxxxxxxx> wrote:
Good Afternoon,

Is it possible to limit a guest OS to a specific memory bandwidth
allocation? The purpose is to stop one guest OS from saturating the
memory bus.

Thank you,


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