Messages in this thread | | | Date | Thu, 17 Jul 2008 10:21:48 -0400 | From | Rik van Riel <> | Subject | Re: madvise(2) MADV_SEQUENTIAL behavior |
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On Thu, 17 Jul 2008 16:14:29 +1000 Nick Piggin <nickpiggin@yahoo.com.au> wrote:
> > It might encourage user space applications to start using > > FADV_SEQUENTIAL or FADV_NOREUSE more often (as it would become > > worthwhile to do so), and if they do (especially cron jobs), the problem > > of the slow desktop in the morning would progressively solve itself. > > The slow desktop in the morning should not happen even without such a > call, because the kernel should not throw out frequently used data (even > if it is not quite so recent) in favour of streaming data. > > OK, I figure it doesn't do such a good job now, which is sad,
Do you have any tests in mind that we could use to decide whether the patch I posted Tuesday would do a decent job at protecting frequently used data from streaming data?
http://lkml.org/lkml/2008/7/15/465
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