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    SubjectRe: [RFC][PATCH] Restricted hard realtime

    * Karim Yaghmour <karim@opersys.com> wrote:

    > >with -RT-V0.3 i get lower than 20 usec _maximum_ latencies during
    > >'./hackbench 20'. (the average latency is 1 usec) So while i'm not yet
    > >in the sub-femtosecond category, things are looking pretty good in
    > >PREEMPT_REALTIME land :)
    >
    > Just curious: what's the setup here? (CPU speed, peripherals, distro,
    > applications being run to load the system, etc.) [...]

    2 GHz Athlon running stock Fedora Core. './hackbench 20' was the
    workload.

    > I'm assuming that the timings are measured using the tracing
    > functionality currently in the patches.

    no, i used a user-space timing app called 'realfeel', but the numbers
    were corroborated by the in-kernel tracer too.

    but ... the best test would be if you tried the patch, it's not hard ;)
    There are newer versions since i did the above measurement and testing
    feedback is always welcome.

    Ingo
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