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    SubjectRe: Ten percent test
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    On Sun, 2007-04-08 at 20:51 +0200, Rene Herman wrote:
    > On 04/08/2007 12:41 PM, Ingo Molnar wrote:
    >
    > > this is pretty hard to get right, and the most objective way to change
    > > it is to do it testcase-driven. FYI, interactivity tweaking has been
    > > gradual, the last bigger round of interactivity changes were done a year
    > > ago:
    > >
    > > commit 5ce74abe788a26698876e66b9c9ce7e7acc25413
    > > Author: Mike Galbraith <efault@gmx.de>
    > > Date: Mon Apr 10 22:52:44 2006 -0700
    > >
    > > [PATCH] sched: fix interactive task starvation
    > >
    > > (and a few smaller tweaks since then too.)
    > >
    > > and that change from Mike responded to a testcase. Mike's latest changes
    > > (the ones you just tested) were mostly driven by actual testcases too,
    > > which measured long-term timeslice distribution fairness.
    >
    > Ah yes, that one. Here's the next one in that series:
    >
    > commit f1adad78dd2fc8edaa513e0bde92b4c64340245c
    > Author: Linus Torvalds <torvalds@g5.osdl.org>
    > Date: Sun May 21 18:54:09 2006 -0700
    >
    > Revert "[PATCH] sched: fix interactive task starvation"
    >
    > It personally had me wonder if _anyone_ was testing this stuff...

    Well of course not. Making random untested changes, and reverting them
    later is half the fun of kernel development.

    -Mike

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