Messages in this thread | | | Date | Mon, 11 Jul 2005 17:55:03 +0200 | From | Ingo Molnar <> | Subject | Re: realtime-preempt-2.6.12-final-V0.7.51-11 glitches [no more] |
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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 ...)
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