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Date: Wed, 06 Jun 2007 01:44:25 +0100 From: Rui Nuno Capela <rncbc@...bc.org> To: Rui Nuno Capela <rncbc@...bc.org> CC: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org, linux-rt-users@...r.kernel.org Subject: Re: 2.6.21-rt2..8 troubles Rui Nuno Capela wrote: > Thomas Gleixner wrote: >> On Fri, 2007-05-25 at 21:58 +0100, Rui Nuno Capela wrote: >>> Is there anything I can do better to help myself figuring out this >>> issue? As this is a modern laptop such things like a serial console are >>> unavailable, but it would be nice to track things up over netconsole >>> perhaps? >>> >>> I just need some bright and nice directions now ;) Hope someone finds >>> this worth of attention too. Meanwhile, I'll be happy with 2.6.21-rt1 :) >> Can you boot with "hpet=disable" on the command line ? >> > > Nope. It doesn't seem to have significant effect. Same time-bomb > behavior: after an indeterminate period of uptime, the systems stops > responding and cannot spawn new processes (current running ones still > live on, strange). > >> If that does not help, please provide the output of /proc/timer_list. >> > > This is with my latest iteration: > http://www.rncbc.org/datahub/config-2.6.21.1-rt8.0 > > Normal boot on which it behaves as badly as reported: > http://www.rncbc.org/datahub/dmesg-2.6.21.1-rt8.0 > > # cat /proc/timer_list > Timer List Version: v0.3 > HRTIMER_MAX_CLOCK_BASES: 2 > now at 131736771907 nsecs > > cpu: 0 > clock 0: > .index: 0 > .resolution: 1 nsecs > .get_time: ktime_get_real > .offset: 1180213690448299114 nsecs > active timers: > clock 1: > .index: 1 > .resolution: 1 nsecs > .get_time: ktime_get > .offset: 0 nsecs > active timers: > #0: <ed7c4ef4>, tick_sched_timer, S:01 > # expires at 131737000000 nsecs [in 228093 nsecs] > #1: <ed7c4ef4>, it_real_fn, S:01 > # expires at 131751277843 nsecs [in 14505936 nsecs] > #2: <ed7c4ef4>, hrtimer_wakeup, S:01 > # expires at 131802703679 nsecs [in 65931772 nsecs] > #3: <ed7c4ef4>, hrtimer_wakeup, S:01 > # expires at 131802705006 nsecs [in 65933099 nsecs] > #4: <ed7c4ef4>, hrtimer_wakeup, S:01 > # expires at 132412838830 nsecs [in 676066923 nsecs] > #5: <ed7c4ef4>, it_real_fn, S:01 > # expires at 137026607454 nsecs [in 5289835547 nsecs] > #6: <ed7c4ef4>, hrtimer_wakeup, S:01 > # expires at 141381493725 nsecs [in 9644721818 nsecs] > #7: <ed7c4ef4>, hrtimer_wakeup, S:01 > # expires at 170796028701 nsecs [in 39059256794 nsecs] > .expires_next : 131737000000 nsecs > .hres_active : 1 > .nr_events : 40634 > .nohz_mode : 2 > .idle_tick : 131724000000 nsecs > .tick_stopped : 0 > .idle_jiffies : 4294799020 > .idle_calls : 178848 > .idle_sleeps : 133212 > .idle_entrytime : 131736069830 nsecs > .idle_sleeptime : 100895567465 nsecs > .last_jiffies : 4294799033 > .next_jiffies : 4294799039 > .idle_expires : 131736000000 nsecs > jiffies: 4294799033 > > cpu: 1 > clock 0: > .index: 0 > .resolution: 1 nsecs > .get_time: ktime_get_real > .offset: 1180213690448299114 nsecs > active timers: > clock 1: > .index: 1 > .resolution: 1 nsecs > .get_time: ktime_get > .offset: 0 nsecs > active timers: > #0: <ed7c4ef4>, hrtimer_wakeup, S:01 > # expires at 131737067173 nsecs [in 295266 nsecs] > #1: <ed7c4ef4>, tick_sched_timer, S:01 > # expires at 131737250000 nsecs [in 478093 nsecs] > #2: <ed7c4ef4>, hrtimer_wakeup, S:01 > # expires at 139151071745 nsecs [in 7414299838 nsecs] > #3: <ed7c4ef4>, hrtimer_wakeup, S:01 > # expires at 139151133755 nsecs [in 7414361848 nsecs] > #4: <ed7c4ef4>, hrtimer_wakeup, S:01 > # expires at 139151154005 nsecs [in 7414382098 nsecs] > .expires_next : 131737067173 nsecs > .hres_active : 1 > .nr_events : 31510 > .nohz_mode : 2 > .idle_tick : 131734250000 nsecs > .tick_stopped : 0 > .idle_jiffies : 4294799030 > .idle_calls : 151213 > .idle_sleeps : 107018 > .idle_entrytime : 131735193036 nsecs > .idle_sleeptime : 108256832194 nsecs > .last_jiffies : 4294799032 > .next_jiffies : 4294799040 > .idle_expires : 131743000000 nsecs > jiffies: 4294799033 > > > Tick Device: mode: 1 > Clock Event Device: hpet > max_delta_ns: 2147483647 > min_delta_ns: 3352 > mult: 61496110 > shift: 32 > mode: 3 > next_event: 131737000000 nsecs > set_next_event: hpet_legacy_next_event > set_mode: hpet_legacy_set_mode > event_handler: tick_handle_oneshot_broadcast > tick_broadcast_mask: 00000003 > tick_broadcast_oneshot_mask: 00000001 > > > Tick Device: mode: 1 > Clock Event Device: lapic > max_delta_ns: 806914928 > min_delta_ns: 1442 > mult: 44650051 > shift: 32 > mode: 1 > next_event: 131737000000 nsecs > set_next_event: lapic_next_event > set_mode: lapic_timer_setup > event_handler: hrtimer_interrupt > > Tick Device: mode: 1 > Clock Event Device: lapic > max_delta_ns: 806914928 > min_delta_ns: 1442 > mult: 44650051 > shift: 32 > mode: 3 > next_event: 131737067173 nsecs > set_next_event: lapic_next_event > set_mode: lapic_timer_setup > event_handler: hrtimer_interrupt > -- > > > Alternate boot with hpet=disabled as suggested, but no better results: > http://www.rncbc.org/datahub/dmesg-2.6.21.1-rt8.0-hpet_disabled > > # cat /proc/timer_list > Timer List Version: v0.3 > HRTIMER_MAX_CLOCK_BASES: 2 > now at 269529706096 nsecs > > cpu: 0 > clock 0: > .index: 0 > .resolution: 1 nsecs > .get_time: ktime_get_real > .offset: 1180214106093436428 nsecs > active timers: > clock 1: > .index: 1 > .resolution: 1 nsecs > .get_time: ktime_get > .offset: 0 nsecs > active timers: > #0: <ed2a2ef4>, tick_sched_timer, S:01 > # expires at 269530000000 nsecs [in 293904 nsecs] > #1: <ed2a2ef4>, hrtimer_wakeup, S:01 > # expires at 269554568320 nsecs [in 24862224 nsecs] > #2: <ed2a2ef4>, hrtimer_wakeup, S:01 > # expires at 269585566924 nsecs [in 55860828 nsecs] > #3: <ed2a2ef4>, hrtimer_wakeup, S:01 > # expires at 269822782823 nsecs [in 293076727 nsecs] > #4: <ed2a2ef4>, hrtimer_wakeup, S:01 > # expires at 272726158017 nsecs [in 3196451921 nsecs] > #5: <ed2a2ef4>, it_real_fn, S:01 > # expires at 278007767018 nsecs [in 8478060922 nsecs] > #6: <ed2a2ef4>, hrtimer_wakeup, S:01 > # expires at 283716431029 nsecs [in 14186724933 nsecs] > #7: <ed2a2ef4>, hrtimer_wakeup, S:01 > # expires at 283716456168 nsecs [in 14186750072 nsecs] > #8: <ed2a2ef4>, hrtimer_wakeup, S:01 > # expires at 295789281627 nsecs [in 26259575531 nsecs] > .expires_next : 269530000000 nsecs > .hres_active : 1 > .nr_events : 63228 > .nohz_mode : 2 > .idle_tick : 269527000000 nsecs > .tick_stopped : 0 > .idle_jiffies : 4294936823 > .idle_calls : 217590 > .idle_sleeps : 168323 > .idle_entrytime : 269528785728 nsecs > .idle_sleeptime : 230915526366 nsecs > .last_jiffies : 4294936825 > .next_jiffies : 4294936840 > .idle_expires : 269543000000 nsecs > jiffies: 4294936826 > > cpu: 1 > clock 0: > .index: 0 > .resolution: 1 nsecs > .get_time: ktime_get_real > .offset: 1180214106093436428 nsecs > active timers: > clock 1: > .index: 1 > .resolution: 1 nsecs > .get_time: ktime_get > .offset: 0 nsecs > active timers: > #0: <ed2a2ef4>, tick_sched_timer, S:01 > # expires at 269530250000 nsecs [in 543904 nsecs] > #1: <ed2a2ef4>, it_real_fn, S:01 > # expires at 269546379364 nsecs [in 16673268 nsecs] > #2: <ed2a2ef4>, hrtimer_wakeup, S:01 > # expires at 283723356553 nsecs [in 14193650457 nsecs] > .expires_next : 269530250000 nsecs > .hres_active : 1 > .nr_events : 64947 > .nohz_mode : 2 > .idle_tick : 269527250000 nsecs > .tick_stopped : 0 > .idle_jiffies : 4294936824 > .idle_calls : 172684 > .idle_sleeps : 111081 > .idle_entrytime : 269529298565 nsecs > .idle_sleeptime : 234502295072 nsecs > .last_jiffies : 4294936826 > .next_jiffies : 4294936833 > .idle_expires : 269536000000 nsecs > jiffies: 4294936826 > > > Tick Device: mode: 1 > Clock Event Device: pit > max_delta_ns: 27461866 > min_delta_ns: 12571 > mult: 5124677 > shift: 32 > mode: 3 > next_event: 269530250000 nsecs > set_next_event: pit_next_event > set_mode: init_pit_timer > event_handler: tick_handle_oneshot_broadcast > tick_broadcast_mask: 00000003 > tick_broadcast_oneshot_mask: 00000002 > > > Tick Device: mode: 1 > Clock Event Device: lapic > max_delta_ns: 807031401 > min_delta_ns: 1443 > mult: 44643607 > shift: 32 > mode: 3 > next_event: 269530000000 nsecs > set_next_event: lapic_next_event > set_mode: lapic_timer_setup > event_handler: hrtimer_interrupt > > Tick Device: mode: 1 > Clock Event Device: lapic > max_delta_ns: 807031401 > min_delta_ns: 1443 > mult: 44643607 > shift: 32 > mode: 1 > next_event: 269530250000 nsecs > set_next_event: lapic_next_event > set_mode: lapic_timer_setup > event_handler: hrtimer_interrupt > -- > Just for the heads-up, I'm still suffering from this same illness, and it seems even worse (big freeze happens earlier) on 2.6.21.3-rt9. There's no way around. On one box it works flawlessly (desktop, P4@...Ghz) while on the patient one (laptop, core2 T7200) it bricks silently. Shrugs:) -- rncbc aka Rui Nuno Capela rncbc@...bc.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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