Jan Engelhardt wrote:
Hi,
this more of an informational question. So:
kernel version is 2.6.22.1 on i686
/proc/uptime
9917.81 9140.90 (2h45m)
/proc/cpuinfo:
CPU0
0: 282 IO-APIC-edge timer
this is kinda neat, I expected much more interrupts than just 282 since
boot. What kernel code actually uses the irq0 timer?
If you don't have an HPET (and most single-processor systems do not) the kernel
is probably using the PIT to wake the processor from low-power sleep states,
since the LAPIC timer is disabled in these states. If your box is mostly idle,
you might want to use powertop to figure out why it's entering low power states
so infrequently.
-- Chris
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