Hi.
Probably FAIR_GROUP_SCHED in config and commit
6b2d7700266b9402e12824e11e0099ae6a4a6a79 (sched: group scheduler, fix
fairness of cpu bandwidth allocation for task groups):
(extract)
+#ifdef CONFIG_FAIR_GROUP_SCHED
+ if (nr_cpu_ids == 1)
+ return;
+
+ lb_monitor_task = kthread_create(load_balance_monitor, NULL,
+ "group_balance");
+ if (!IS_ERR(lb_monitor_task)) {
+ lb_monitor_task->flags |= PF_NOFREEZE;
+ wake_up_process(lb_monitor_task);
+ } else {
+ printk(KERN_ERR "Could not create load balance monitor
thread"
+ "(error = %ld) \n", PTR_ERR(lb_monitor_task));
+ }
+#endif
# powertop -d
PowerTOP 1.9 (C) 2007 Intel Corporation
Sammle Daten für 15 Sekunden
Cn Verweildauer
C0 (Prozessor läuft) ( 0,2%)
C1 0,0ms ( 0,0%)
C2 0,0ms ( 0,0%)
C3 23,6ms (99,8%)
P-States (Frequenzen)
1,84 GHz 100,0%
1,67 GHz 0,0%
1500 MHz 0,0%
1333 MHz 0,0%
Aufwachen pro Sekunde : 42,4 Intervall: 15,0s
Keine ACPI Stromverbrauch-Schätzung verfügbar
Häufigste Ursachen für das Aufwachen:
28,6% ( 14,6) <interrupt> : wifi0
23,5% ( 12,0) <kernel module> : usb_hcd_poll_rh_status (rh_timer_func)
15,8% ( 8,1) amarokapp : schedule_timeout (process_timeout)
15,1% ( 7,7) group_balance : schedule_timeout (process_timeout)
2,2% ( 1,1) kicker : schedule_timeout (process_timeout)
2,2% ( 1,1) kwin : schedule_timeout (process_timeout)
2,0% ( 1,0) ifplugd : schedule_timeout (process_timeout)
2,0% ( 1,0) kwrapper : do_nanosleep (hrtimer_wakeup)
1,4% ( 0,7) X : do_setitimer (it_real_fn)
0,9% ( 0,5) kded : schedule_timeout (process_timeout)
0,9% ( 0,5) gpg-agent : schedule_timeout (process_timeout)
0,8% ( 0,4) kdesktop : schedule_timeout (process_timeout)
0,7% ( 0,3) <kernel IPI> : Rescheduling interrupts
0,4% ( 0,2) konsole : schedule_timeout (process_timeout)
0,4% ( 0,2) init : schedule_timeout (process_timeout)
0,4% ( 0,2) amarokapp : futex_wait (hrtimer_wakeup)
0,4% ( 0,2) ip : __netdev_watchdog_up (dev_watchdog)
0,4% ( 0,2) nscd : futex_wait (hrtimer_wakeup)
0,3% ( 0,1) <kernel core> : inet_twsk_schedule (inet_twdr_hangman)
0,3% ( 0,1) <kernel core> : neigh_table_init_no_netlink
(neigh_periodic_timer)
0,3% ( 0,1) kio_http : schedule_timeout (process_timeout)
0,1% ( 0,1) <interrupt> : uhci_hcd:usb1, ehci_hcd:usb5
0,1% ( 0,1) <kernel IPI> : function call interrupts
0,1% ( 0,1) <kernel core> : input_handle_event (input_repeat_key)
0,1% ( 0,1) X : schedule_timeout (process_timeout)
0,1% ( 0,1) <kernel core> : neigh_add_timer (neigh_timer_handler)
0,1% ( 0,1) <kernel module> : ieee80211_node_attach
(ieee80211_node_timeout)
0,1% ( 0,1) <kernel core> : init_nonfatal_mce_checker
(delayed_work_timer_fn)
0,1% ( 0,1) <kernel core> : ip_rt_init (delayed_work_timer_fn)
0,1% ( 0,1) USB Gerät 1-2 : Apple Internal Keyboard / Trackpad
(Apple Computer)
Is this normal behaviour?
mfg
thomas
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