Re: NO_HZ: timer interrupt stuck [Re: Linux 2.6.21-rc1]

Pierre Ossman
2007-02-22T14:09:50Z

Arjan van de Ven wrote:
>
> some can be used for both (PIT), but on a concept level the uses are
> independent. The advantage of local apic over PIT is that local apic is
> cheap to do "one shot" future events with, while the PIT will tick
> periodic at a fixed frequency. With tickless idle.. that's not what you
> want.
>

So with a local apic, and acpi_pm as clocksource, I shouldn't be getting timer
interrupts? Yet I do. Which I assume means that the kernel will still get woken
up very often.

Rgds
--
-- Pierre Ossman

Linux kernel, MMC maintainer http://www.kernel.org
PulseAudio, core developer http://pulseaudio.org
rdesktop, core developer http://www.rdesktop.org