this isn't a new observation...
Posted Jul 27, 2007 3:48 UTC (Fri) by HalfMoon
Parent article: Yet another approach to software suspend
What Andrew recognized last year...
For the record, the observation wasn't new to Andrew, or even new as of last year.
In fact, high availability systems have long supported "checkpoint" and "restart" capabilities. That's important for enterprise systems: if the job takes a few days to run and the system power vanished an hour before it would have finished, you want to restart from a checkpoint and just redo the last chunk of work. Suspend-to-disk is exactly such a checkpoint; the main difference between that and the enterprise stuff is that laptops have much more varied hardware, and the configurations are more likely to change after the checkpoint.
What's interesting now is that kdump and friends are starting to seem nearly ready that it's time to take advantage of that. There's still a lot of new work to be done of course. But now that people realize this, maybe we can finally start to address some of the nasty cruft in these areas!
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