Okay, I've done some upgrading: hal, dbus, klibc (regenerated initrd), everything from x11 section of repository.
This bug probably did it's part: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=562068 So I was able to get under 11 W when idle (wifi on, browser started, hdaps daemon running). I still feel like a lot more interrupts are coming up. And the most suprising thing: iwconfig wlan0 power on powertop was not complaining about this at all. Some script was using no longer valid sysfs export so iwlagn was not using power management mode (I suspect this also affected it when it was turned off). Now I am able to get 9.0-9.5 on idle system! At Thu, 04 Feb 2010 12:30:27 +0100, Adam Sloboda wrote: > > Hi all, > > In the past week I've been searching for the source of "<kernel IPI> : > Rescheduling interrupts" -- I have more than 500 wakeups on idle > system (ThinkPad X200). > > Today I tried to set affinity of processes to one core and then > affinity of X process to the other one: > > for pid in `ps aux | awk '{print $2}'`; do taskset -c -p 0 $pid; done > > taskset -c -p 1 `pidof X` > > # You can restore it back (on dual-core): > #for pid in `ps aux | awk '{print $2}'`; do taskset -c -p 0,1 $pid; done > > First command reduced Rescheduling interrupts rapidly and the second > one caused it skyrocket back to hundreds. I noticed this with 2.6.30 > kernel but have no idea when this started. I'm now on 2.6.32.7, I > tried minimal kernel config but no luck. I'm pretty sure this is not > happening on 2.6.26 distribution kernel (Debian squeeze). > > I'm also getting a lot of "extra timer interrupt" wakeups (over 100) > and a little less if all processes run on the same core. This might > be also connected with the issue. So I still have pretty poor > residency in sleep state but it's better. > > So it seems it's not any hardware driver but userspace process > interaction (or X processes). This is dead end for me. As the > result, I have 12-13 W power consumption on 12.1" centrino 2 laptop > (Vista can get it down to somewhere around 6 when idle and disk turned > off, wifi on). > > I will appreciate any ideas. > > Regards, > Adam _______________________________________________ Power mailing list [email protected] http://www.bughost.org/mailman/listinfo/power
