On Wed, Jan 12, 2005 at 02:17:38PM -0700, Siddharth Aggarwal wrote: > > I am responding to a post back in Oct 2003 when the checkpointing feature > was announced for DragonFly. I have been doing some research on this, and > have seen some projects that use Xen VMM to achieve checkpoints of guest > OSes. > > So I was looking for inputs from people as to what everyone feels about > checkpointing, whether it should be done at the physical machine level or > VM level. Pros and Cons of each approach, if any further development was > done on DragonFly for checkpoint since then and if it was stopped, why? > Are there serious limitations to checkpointing a physical machine? > > Sorry for such a vague posting, but I thought this would be a good > platform to get some feedback.
The DragonFly lists would be the logical place to discuss DragonFly features. From my perspective as a scientific computing user, VM level checkpointing is it little use since I get the overhead of the VM and I can't easily do the application level checkpointing required to checkpoing distributed programs. There are probably a number of places where it is useful in scientific computing, but I don't find it to be all that intresting. -- Brooks -- Any statement of the form "X is the one, true Y" is FALSE. PGP fingerprint 655D 519C 26A7 82E7 2529 9BF0 5D8E 8BE9 F238 1AD4
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