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    SubjectRe: Interesting interaction between lguest and CFS

    * Matt Mackall <mpm@selenic.com> wrote:

    > With 2.6.22-rc3-mm1, I've got a long-running video transcoding going
    > on. In other windows, I'm compiling, reading email, etc. with no
    > noticeable problems.
    >
    > If I fire up lguest and leave it sitting at a shell prompt for a
    > couple moments, when I return to type something at the prompt, it can
    > take 2-3 seconds for my input to echo. Once it starts responding,
    > typing latency disappears. Suspend the other app and the latency
    > disappears.

    btw., does this only happen with lguest, or with other idle shells too?

    perhaps lguest does something unusual when it idles? Does it fiddle
    sched_clock() in any way?

    Ingo
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