Hello, I want to let you know that the problem of mine is resolved.
The problem was here: C2 9.4ms (76.8%) C3 3.8ms (22.0%) That means someone was not allowing cpu to sleep deep enough and it was not related to the interrupts. I have determined that it was kde3 window manageer (kwin) causing problems and switched to openbox-kde session. Now cpu sleeps in c3 all the time, although almost all of the interrupts still happen. I have also tried measure the consumption without all the interrupts (without kde stuff running, i.e. with openbox session only) and it lowered power consumption by ~0.1 - tha't pretty small, considering that getting rid of kwin saved me around 2-4W. Now I can run at 9W without wireless and minimal brightness. That's good enough for me :-) Regards Ladislav Laska S pozdravem Ladislav Laska --- xmpp/jabber: [email protected] On Thu, Oct 29, 2009 at 12:50 PM, Ladislav Laska <[email protected]> wrote: > (sorry for incomplete mail, "Send" button got in my way) > > ... Could this be a bug in bios? In that case, I could try upgrading > bios (I have some version from 2008 and more recent versions are > available I think, but I don't want to mess with it until I'm at > pretty sure it could be it) > > > Regards Ladislav Laska > S pozdravem Ladislav Laska > --- > xmpp/jabber: [email protected] > > > > On Thu, Oct 29, 2009 at 12:47 PM, Ladislav Laska > <[email protected]> wrote: >> I have just tried it, but it's the same. >> >> Could >> >> Regards Ladislav Laska >> S pozdravem Ladislav Laska >> --- >> xmpp/jabber: [email protected] >> >> >> >> On Thu, Oct 29, 2009 at 10:47 AM, Florian Reitmeir <[email protected]> >> wrote: >>> Hi, >>> >>> On Thu, 29 Oct 2009, Ladislav Laska wrote: >>>>I have a IBM x60s notebook and have been tuning my Gentoo system for >>>>power consumption for some time. Still I'm a little puzzled by some >>>>outputs from powertop (powertop -d output attached). The lines that >>>>trouble me are: >>>> >>>> 36.7% ( 58.1) <kernel core> : hrtimer_start_range_ns >>>> (tick_sched_timer) >>>> 15.3% ( 24.3) <interrupt> : extra timer interrupt >>>> >>>>Since I have enabled tickless kernel (kernel config attached), I don't >>>>know where these interrupts come from. Can someone please point >>>>somewhere or give a hint? Is it possible to get more info from >>>>powertop or do I have to dig somewhere else? >>>> >>>>Note that iwl3945 is probably normal and goes down after some idle time. >>> >>> IMHO on my notebook (also x60s) adding a 'hpet=force' to the kernel >>> commandline resolved those wakeups. >>> >>> -- >>> Florian Reitmeir >>> >>> _______________________________________________ >>> Power mailing list >>> [email protected] >>> http://www.bughost.org/mailman/listinfo/power >>> >> > _______________________________________________ Power mailing list [email protected] http://www.bughost.org/mailman/listinfo/power
