Re: Strange hang HPET in current

From: Alexander Motin <mav_at_FreeBSD.org>
Date: Fri, 29 Oct 2010 17:04:18 +0300
Alexander Motin wrote:
> Andrey Smagin wrote:
>> In my box (amd64, current 20.oct.10 ) 
>> some time hang by 5-10 minutes with random subsystem, may 
>> hang disk access,network,very often tty. In most no output in log, 
>> sometimes with messages "calcru: .....". After 5-10 minutes it 
>> continue work again. When I disabled HPET in bios - problem gone.
> 
> Could you give some more info? Is it physical machine? Is it SMP? What
> chipset do you have? Does HPET works in per-CPU or global mode? Does
> `vmstat -i` shows HPET interrupts during that time?

PS: You may try to remove from acpi_hpet.c near line 192 condition
	if (fdiv < 5000) {
and respective "}". Report me if it help.

-- 
Alexander Motin
Received on Fri Oct 29 2010 - 12:04:31 UTC

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