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    SubjectRe: realtime-preempt-2.6.12-final-V0.7.51-11 glitches [no more]
    From
    > * Rui Nuno Capela <rncbc@rncbc.org> wrote:
    >
    >> After several trials, with CONFIG_PROFILING=y and profile=1
    >> nmi_watchdog=2 as boot parameters, I'm almost convinced I'm doing
    >> something wrong :)
    >>
    >> - `readprofile` always just outputs one line:
    >>
    >> 0 total 0.0000
    >>
    >> - `readprofile -a` gives the whole kernel symbol list, all with zero
    >> times.
    >>
    >> Is there anything else I can check around here?
    >
    > it means that the NMI watchdog was not activated - i.e. the 'NMI' counts
    > in /proc/interrupts do not increase. Do you have LOCAL_APIC enabled in
    > the .config? If yes and if nmi_watchdog=1 does not work either then it's
    > probably not possible to activate the NMI watchdog on your box. In that
    > case try nmi_watchdog=0, that should activate normal profiling. (unless
    > i've broken it via the profile-via-NMI changes ...)
    >

    I've tried whether having nmi_watchdog has any influence, to no
    distinguishable result; readprofile always says zero times. And I'm sure I
    have LOCAL_APIC=y (see attached config.gz)
    --
    rncbc aka Rui Nuno Capela
    rncbc@rncbc.org

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