Messages in this thread | | | Date | Wed, 19 Oct 2005 13:01:15 +0200 | From | gfiala@s ... | Subject | Re: large files unnecessary trashing filesystem cache? |
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Zitat von Andrew James Wade <andrew.j.wade@gmail.com>: > > 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?) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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