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Brad Fitzpatrick

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Xen merge [Nov. 1st, 2005|10:48 am]
Brad Fitzpatrick
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Article about Xen merge into the kernel:
http://www.eweek.com/article2/0,1895,1879667,00.asp
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Comments:
[User Picture]From: scosol
2005-11-02 04:35 am (UTC)
Hmmm- I think about the problem in this fashion taken from the article:

"While people are extending the existing management platforms to virtual boxes, what they are not doing is changing the management paradigm, and that needs to change to one where applications, systems and resources are just meeting for a point in time. This needs to be more of a brokering system than the management of physical systems."

It seems to me that the main benefits of virtualization systems like Zen today are derived from the *lack* of good resource sharing in the OS itself-
It's the OS's job to balance load from multiple applications across the box's resources, where it fails, virtualization helps.
But I think that as more and more of the OS's resource managing moves away from a time-slicing model and more towards a brokering request/event based model, virtualization will cease to provide the benefits it currently does-
I guess see putting multiple instances of broken resource management in a container with more fine-grained controls, then running that container on top of another broken resource manager, as kind of a bad hack-
Where the cleaner and more efficient way is to bring the resource management of the OS up to the level it needs to be...
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