6.1-STABLE hangs, ddb shows 'acpi_timer_read'?

[Karl Pielorz]

--On 20 October 2006 14:01 +0300 Kostik Belousov <kostikbel at gmail.com> 
wrote:

> On Fri, Oct 20, 2006 at 11:56:33AM +0100, Karl Pielorz wrote:
>>
>> I have a crash dump from it - which I've saved (I'm moderately familiar
>> with working with dumps, but this one is split into two?)
>>
>> If anyone has any pointers, or can do some hand holding to get more info
>> from the dump, or what to do next time it happens?
>
> See
> http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kern
> eldebug-deadlocks.html

Thanks for the link! Anyone know much is all that lot (such as 
INVARIANTS/WITNESS) etc. likely to slow the machine down? - A few percent? 
More?

I'm just a little hesitant to put it all in, and end up with a machine 
that's 80% slower :(

-Karl