Re: 2.6.27-rc6: nohz + s2ram = need to press keys to get progress

[Pavel Machek]

On Mon 2008-09-15 07:08:01, Thomas Gleixner wrote:
> On Mon, 15 Sep 2008, Pavel Machek wrote:
> > > 
> > > Hmm. Can you please provide the output of /proc/timer_list when the
> > > system is in that "sleepy" state.
> 
> Any chance to get that output ?

Yep ;-).

> > -rc5 seems to work ok... is there some patch I should try to revert
> > first?
> 
> The relevant 9 changes are from:
> 
> 7c1e76897492d92b6a1c2d6892494d39ded9680c

I did 

cg-seek 7c1e76897492d92b6a1c2d6892494d39ded9680c

...and resulting kernel seems to work okay.

> to
> 
> 72d43d9bc9210d24d09202eaf219eac09e17b339

cg-seek here, and problem is back. Good. I can get the
/proc/timer_list ;-)... attached.
									Pavel


-- 
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(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
Timer List Version: v0.3
HRTIMER_MAX_CLOCK_BASES: 2
now at 78679262236 nsecs

cpu: 0
 clock 0:
  .index:      0
  .resolution: 4000250 nsecs
  .get_time:   ktime_get_real
active timers:
 clock 1:
  .index:      1
  .resolution: 4000250 nsecs
  .get_time:   ktime_get
active timers:
 #0: <f5d67eb8>, it_real_fn, S:01, do_setitimer, rpc.nfsd/1488
 # expires at 79800076403 nsecs [in 1120814167 nsecs]
 #1: <f5d67eb8>, it_real_fn, S:01, do_setitimer, rpc.mountd/1486
 # expires at 79800101756 nsecs [in 1120839520 nsecs]
 #2: <f5d67eb8>, it_real_fn, S:01, do_setitimer, syslogd/1446
 # expires at 106836398898 nsecs [in 28157136662 nsecs]
 #3: <f5d67eb8>, it_real_fn, S:01, do_setitimer, qmgr/1603
 # expires at 389997707387 nsecs [in 311318445151 nsecs]
 #4: <f5d67eb8>, it_real_fn, S:01, do_setitimer, pickup/1602
 # expires at 411025536414 nsecs [in 332346274178 nsecs]
 #5: <f5d67eb8>, it_real_fn, S:01, do_setitimer, master/1601
 # expires at 411025663664 nsecs [in 332346401428 nsecs]
 #6: <f5d67eb8>, it_real_fn, S:01, do_setitimer, mutt/1627
 # expires at 949848265489 nsecs [in 871169003253 nsecs]
 #7: <f5d67eb8>, it_real_fn, S:01, do_setitimer, smtp/1606
 # expires at 6056997804606 nsecs [in 5978318542370 nsecs]
 #8: <f5d67eb8>, it_real_fn, S:01, do_setitimer, bounce/1638
 # expires at 6056997871724 nsecs [in 5978318609488 nsecs]
  .nohz_mode      : 1
  .idle_tick      : 78676896750 nsecs
  .tick_stopped   : 1
  .idle_jiffies   : 4294911965
  .idle_calls     : 10530
  .idle_sleeps    : 4823
  .idle_entrytime : 78676079360 nsecs
  .idle_waketime  : 78676019925 nsecs
  .idle_exittime  : 78676052541 nsecs
  .idle_sleeptime : 72788008686 nsecs
  .last_jiffies   : 4294911965
  .next_jiffies   : 4294911988
  .idle_expires   : 78768000000 nsecs
jiffies: 4294911965

cpu: 1
 clock 0:
  .index:      0
  .resolution: 4000250 nsecs
  .get_time:   ktime_get_real
active timers:
 clock 1:
  .index:      1
  .resolution: 4000250 nsecs
  .get_time:   ktime_get
active timers:
  .nohz_mode      : 1
  .idle_tick      : 78543351750 nsecs
  .tick_stopped   : 0
  .idle_jiffies   : 4294911931
  .idle_calls     : 7365
  .idle_sleeps    : 1350
  .idle_entrytime : 78540354359 nsecs
  .idle_waketime  : 76836307895 nsecs
  .idle_exittime  : 78676087671 nsecs
  .idle_sleeptime : 77463218593 nsecs
  .last_jiffies   : 4294911931
  .next_jiffies   : 2431226
  .idle_expires   : 10024904000000 nsecs
jiffies: 4294911965


Tick Device: mode:     1
Clock Event Device: hpet
 max_delta_ns:   2147483647
 min_delta_ns:   5000
 mult:           61496114
 shift:          32
 mode:           3
 next_event:     26228000000 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: 00000000


Tick Device: mode:     1
Clock Event Device: lapic
 max_delta_ns:   807384766
 min_delta_ns:   1443
 mult:           44624068
 shift:          32
 mode:           3
 next_event:     78680897000 nsecs
 set_next_event: lapic_next_event
 set_mode:       lapic_timer_setup
 event_handler:  tick_nohz_handler

Tick Device: mode:     1
Clock Event Device: lapic
 max_delta_ns:   807384766
 min_delta_ns:   1443
 mult:           44624068
 shift:          32
 mode:           3
 next_event:     78683360500 nsecs
 set_next_event: lapic_next_event
 set_mode:       lapic_timer_setup
 event_handler:  tick_nohz_handler