DragonFly-2.3.0.864.gc5b83 master sys/platform/pc32/apic mpapic.c sys/platform/pc32/isa clock.c sys/platform/pc64/isa clock.c sys/platform/vkernel/platform systimer.c sys/sys systimer.h

[Hasso Tepper]

Sepherosa Ziehau:
> Though I don't have a system that could do C3 testing, I added a sysctl 
> to test the dynamic switching.  It works as expected.

But I have. Without hw.lapic_timer_enable "systat -vm 1" reports ~270 clk 
interrupts per second on my laptop with rather idle KDE3 desktop. With 
hw.lapic_timer_enable and hw.acpi.cpu.cx_lowest=C1 it's 0 (as expected), 
but with cx_lowest set to C3 it's ~2700 and more. Why?


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Hasso Tepper