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    SubjectRe: [PATCH][RSDL-mm 0/7] RSDL cpu scheduler for 2.6.21-rc3-mm2
    Date
    On Tuesday 13 March 2007 00:48, Theodore Tso wrote:
    > On Mon, Mar 12, 2007 at 10:23:06PM +1100, Con Kolivas wrote:
    > > > > > We are getting good interactive response with a fair scheduler yet
    > > > > > you seem intent on overloading it to find fault with it.
    > > > >
    > > > > I'm not trying to find fault, I'm TESTING AND REPORTING. Was.
    > > >
    > > > Con, could you please take Mike's report of this regression seriously
    > > > and address it? Thanks,
    > >
    > > Sure.
    > >
    > > Mike the cpu is being proportioned out perfectly according to fairness as
    > > I mentioned in the prior email, yet X is getting the lower latency
    > > scheduling. I'm not sure within the bounds of fairness what more would
    > > you have happen to your liking with this test case?
    >
    > Con,
    >
    > I think what we're discovering is that a "fair scheduler" is
    > not going to cut it. After all, running X and ripping CD's and MP3
    > encoding them is not exactly an esoteric use case. And like it or
    > not, "nice" defaults to 4.
    >
    > I suspect Mike is right; the only way to deal with this
    > regression is some scheduler hints from the desktop subsystem (i.e., X
    > and friends). Yes, X is broken, it's horrible, yadda, yadda, yadda.
    > It's also what everyone is using, and it's a fact of life. Just like
    > we occasionally have had to work around ISA braindamage, and x86
    > architecture braindamage, and ACPI braindamage all inflicted on us by
    > Intel. This is just life, and sometimes the clean, elegant solution
    > is not enough.

    Instead of assuming it's bad, have you tried RSDL for yourself? Mike is using
    2 lame threads for his test case.

    --
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