Messages in this thread | | | Date | Sat, 1 Dec 2007 16:13:02 -0800 | From | Arjan van de Ven <> | Subject | Re: 20000+ wake-ups/second in 2.6.24. Bug? |
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On Sat, 01 Dec 2007 18:55:48 -0500 Mark Lord <lkml@rtr.ca> wrote:
> Arjan van de Ven wrote: > > On Sat, 01 Dec 2007 18:43:39 -0500 > > Mark Lord <lkml@rtr.ca> wrote: > > > >> Dagnabbit.. it's done it again.. went from 100-200 wakeups/sec > >> back up to 20000+ wakeups/sec. This time *with* the powertop > >> patches in place. > >> > >> Somethings broken in there, but I don't know what. > >> Or how to make it happen on demand.. it's fine after rebooting > >> again. > >> > >> ??? > >> > >> At least now I know to look when I hear the fan turning on > >> when the system is otherwise supposed to be idle.. > >> > >> 2.6.23 did not have this problem. > > > > actually we have reports of 2.6.23 having the exact same problem. > > The thing is, "something" is causing the system to go into a state > > where the cpu throws us right out of the C-state the kernel asks > > for. > ... > > Ahh. Okay, this machine here did not have the problem on 2.6.23. > > > Some people have seen that not loading yenta at all will just make > > this not happen at all... > ... > > No yenta/cardbus here -- it's all PCIe.
but.. is yenta loaded or built into the kernel? or is the config option off? Also, do you have a TI firewire bridge? (just asking the common patterns we've sort of kinda seen so far)
> If you have any debug patches that could detect or help next time I > see it, then feel free to toss them this way.
one thing to try (just as data collection) is to do lspci -vvxxx before it happens, and then again after it happens and then diff to see if something changed ;(
(yes this is very crude; we've not been able to chase this one down at all so far). -- If you want to reach me at my work email, use arjan@linux.intel.com For development, discussion and tips for power savings, visit http://www.lesswatts.org
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