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,
[email protected]) while on the patient one (laptop, core2 T7200) it bricks
silently.
Shrugs:)
--
rncbc aka Rui Nuno Capela
[email protected]
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