> Just a curious uninformed question, what does this really offer that cannot be done with UML or Xen?
Is UML even developed any more these days? Looking at its home page, it seems to talk about 2.4 kernels, like here: http://user-mode-linux.sourceforge.net/dl-sf.html
Anyway, getting these isolated containers without having many copies of the kernel is probably a big enough performance enhancement to be worth the trouble.
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