in the bootloader and see if you still get this. I've already got one
report of system time going twice as fast as it should; I'm unsure what's
going on here (I don't grok the timecounter code as well as I should, I
You could also try building a kernel with CLK_CALIBRATION_LOOP defined
and then booting with -v (without the timer disabled). This might be
instructive (I don't know for certain that it'll calibrate the ACPI
timer, since it may not have been probed yet).
> just noticed with a -current from yesterday (today's -current has the
> same problem).
> After bootup I will see tons of
> calcru: negative time of -953757 usec for pid 636 (make)
> calcru: negative time of -820616 usec for pid 636 (make)
> microuptime() went backwards (1969.4485199 -> 1969.552693)
> microuptime() went backwards (1969.4485199 -> 1969.690311)
> messages, together with processes with a negative CPU usage time.
> Something is going wrong during setting clock interrupts.
> A "vmstat -i" shows (among other interrupts):
> clk irq0 79496 49
> rtc irq8 101753 63
> which is about half the rate it should be.
> The latest working kernel I was booting before was from Jul, 13th
> If I disable ACPI in the kernel the interrupt rate is back to normal.
> ACPI related boot messages:
> acpi0: <GBT AWRDACPI> on motherboard
> acpi0: power button is handled as a fixed feature programming model.
> acpi_timer0: <32-bit timer at 3.579545MHz> port 0x4008-0x400b on acpi0
> acpi_cpu0: <CPU> on acpi0
> acpi_button0: <Power Button> on acpi0
> acpi_pcib0: <Host-PCI bridge> on acpi0
> pci0: <PCI bus> on acpi_pcib0
> acpi_cpu0: set speed to 100.0%
> acpi_cpu: CPU throttling enabled, 2 steps from 100% to 50.0%
> Mainboard is a GigaByte GA-5AX with F3 BIOS.
> I will provide further configuration information if needed.
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