Zitat von Andrew James Wade <[email protected]>:
> > For example, the person whose application does repeated linear reads of
> the
> > first 100MB of a 4G file will get very upset.
>
> As will any dumb heuristic for that matter; we'd need precognition[1] to
> avoid
> all of them. But we can hopefully make the failure modes rarer and more
> predictable. I don't know how my proposal would fare, and as I do not have
> the code to test the matter I think I shall drop it.
>
> [1] Which could, on occasion, be provided by hinting.
That is why i said it should be configurable by root via proc/sys/kernel
interface - if the system is intended to primarily run a database, set it to a
different heuristic than to "desktop/multimedia-workstation".
Much like the recent IO-scheduler additions (do they affect this behaviour?)
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