Hi there,
After some use I see a mysterious source of lots of wake ups in powertop:
82,8% (980,6) events/0 : queue_delayed_work (delayed_work_timer_fn)
What is that? I usually get it fixed by closing my Gnome desktop and logging
back in.
I have to say I made some tweaks to reduce the wps in powertop:
1) Remove the uvcvideo driver.
[] http://bugzilla.kernel.org/show_bug.cgi?id=11948
2) Remove the dcdbas driver. What is it? where do I file a bug report?
3) Disable the second core through the BIOS to avoid the Kernel IPI
Rescheduling interrupts.
All of this cut down my wake ups from 50 to an amazing 3 and gave me a gain of
almost 2 hours of battery life.
But after some time of continual use the events/0 kernel thread starts waking
up the CPU 1000 times per second all the time.
top shows this:
6 root 15 -5 0 0 0 R 0.7 0.0 0:22.95 events/0
What should I do to track the source of the problem??
My hardware is a Dell XPS M1210 laptop ICH7 chipset with an Intel T2400 @
1.83GHz. I am using Fedora Rawhide (Fedora 10) with the latest updates and
kernel 2.6.27.4-68.fc10.i686.
The output of the command "sleep 5 ; powertop -d -t 20" is this:
PowerTOP 1.9 (C) 2007 Intel Corporation
Recolectando datos durante 20 segundos
Cn Avg residency
C0 (cpu ejecutando) (12,6%)
C1 0,0ms ( 0,0%)
C2 0,0ms ( 0,0%)
C3 0,9ms (87,4%)
P-states (frequencies)
1,84 Ghz 3,0%
1333 Mhz 0,0%
1000 Mhz 97,0%
Wakeups-from-idle per second : 969,0 interval: 20,0s
las estimaciones de ACPI sobre el uso de corriente no están disponibles
Top causes for wakeups:
98,6% (994,1) events/0 : queue_delayed_work (delayed_work_timer_fn)
0,6% ( 6,0) <interrupt> : eth0, iwl3945
0,4% ( 3,7) <interrupt> : ata_piix
0,1% ( 1,0) NetworkManager : __mod_timer (b44_timer)
0,1% ( 0,7) firefox : futex_wait (hrtimer_wakeup)
0,0% ( 0,5) <kernel core> : __mod_timer (neigh_periodic_timer)
0,0% ( 0,5) iwl3945 : mod_timer (ieee80211_sta_timer)
0,0% ( 0,3) NetworkManager : __mod_timer (process_timeout)
0,0% ( 0,3) gnome-power-man : __mod_timer (process_timeout)
0,0% ( 0,2) gnome-panel : __mod_timer (process_timeout)
0,0% ( 0,2) <kernel module> : __mod_timer (neigh_periodic_timer)
0,0% ( 0,1) gnome-terminal : __mod_timer (process_timeout)
0,0% ( 0,1) <kernel module> : __mod_timer (sta_info_cleanup)
0,0% ( 0,1) <kernel core> : mod_timer (wb_timer_fn)
0,0% ( 0,1) kerneloops : __mod_timer (process_timeout)
0,0% ( 0,1) <kernel core> : mod_timer (inet_twdr_hangman)
0,0% ( 0,1) <kernel core> : mod_timer (iwl3945_bg_rate_scale_flush)
0,0% ( 0,1) <kernel core> : __mod_timer (addrconf_verify)
0,0% ( 0,1) hald : __mod_timer (process_timeout)
0,0% ( 0,1) audispd : __mod_timer (process_timeout)
0,0% ( 0,1) gconfd-2 : __mod_timer (process_timeout)
¡Todo sobre Amor y Sexo!
La guía completa para tu vida en Mujer de Hoy.
http://mx.mujer.yahoo.com/
_______________________________________________
Power mailing list
[email protected]
http://www.bughost.org/mailman/listinfo/power
