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

From: Pierre Ossman
Date: Thu Feb 22 2007 - 09:10:19 EST

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.

-- Pierre Ossman

Linux kernel, MMC maintainer
PulseAudio, core developer
rdesktop, core developer
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