Messages in this thread | | | Date | Tue, 20 Nov 2007 21:54:54 +0100 | From | Ingo Molnar <> | Subject | Re: nohz and strange sleep latencies |
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* Pavel Machek <pavel@ucw.cz> wrote:
> > and send us the output? (Enabling CONFIG_TIMER_STATS, > > CONFIG_SCHED_DEBUG and CONFIG_SCHEDSTATS would maximize the amount > > of information.) > > This was w/o hpet=disable . Do you want me to test with hpet=disable?
no, this is fine. You've got a hpet clockevents driver and two lapic drivers:
Clock Event Device: hpet set_next_event: hpet_legacy_next_event set_mode: hpet_legacy_set_mode event_handler: tick_handle_oneshot_broadcast
Clock Event Device: lapic set_next_event: lapic_next_event set_mode: lapic_timer_setup event_handler: hrtimer_interrupt
Clock Event Device: lapic set_next_event: lapic_next_event set_mode: lapic_timer_setup event_handler: hrtimer_interrupt
to me this has the feeling of lapic breakage in C2 mode. Does it get any better if you boot with 'nolapic'? (but that might in turn turn off high-res timers and nohz in essence) Thomas, any ideas?
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