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xen-devel
[Xen-devel] Re: [RFC] transcendent memory for Linux
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To: |
Dan Magenheimer <dan.magenheimer@xxxxxxxxxx> |
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Subject: |
[Xen-devel] Re: [RFC] transcendent memory for Linux |
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From: |
Roland Dreier <rdreier@xxxxxxxxx> |
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Date: |
Tue, 30 Jun 2009 20:41:01 -0700 |
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<5331ec14-c599-4317-bd5b-55911b8ee916@default> (Dan Magenheimer's message of "Mon, 29 Jun 2009 07:44:50 -0700 (PDT)") |
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> One issue though: I would guess that copying pages of memory
> could be very slow in an inexpensive embedded processor.
And copying memory could very easily burn enough power by keeping the
CPU busy that you lose the incremental gain of turning the memory off
vs. just going to self refresh. (And the copying latency would easily
be as bad as the transition latency to/from self-refresh).
- R.
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- [Xen-devel] RE: [RFC] transcendent memory for Linux, (continued)
[Xen-devel] Re: [RFC] transcendent memory for Linux,
Roland Dreier <=
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