Messages in this thread | | | Subject | Re: Fw: Some very thought-provoking ideas about OS architecture. | Date | Sun, 20 Jun 1999 22:23:09 +0100 (BST) | From | Alan Cox <> |
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> 3. System-wide (i.e. global) checkpoint. In this design, the entire machine is > periodically snapshotted and written to disk. This is the EROS and KeyKOS > design. It can be done with very low overhead.
I am dying to see an efficient checkpoint of a 300Gig usenet object spool which is receiving articles 24x7 at about 150 a second, shared with 12 servers feeding about 8000 clients in parallel, feeding a filtered subset of the stream to a collection of remote sites and expiring objects at a similar rate to arrival.
That is the challenge.
I accept without reservation the snapshot the entire box model makes sense for a simple appliance with little state. Thats an established old old method. (example: ADVENT - the original fortran monsterpiece)
Alan
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