Messages in this thread | | | Date | Mon, 11 Jul 2005 23:00:51 +0100 (WEST) | Subject | Re: realtime-preempt-2.6.12-final-V0.7.51-11 glitches [no more] | From | "Rui Nuno Capela" <> |
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> * 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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