New interrupt code slows hyperthreading down

[John Baldwin]

On 07-Nov-2003 Jens Rehsack wrote:
> Lars Eggert wrote:
>> John Baldwin wrote:
>> 
>>> On 07-Nov-2003 Lars Eggert wrote:
>>>
>>>> Jens Rehsack wrote:
>>>>
>>>>> interrupt                          total       rate
>>>>> irq1: atkbd0                         512          2
>>>>> irq8: rtc                          23419        127
>>>>> irq13: npx0                            1          0
>>>>> irq14: ata0                         4422         24
>>>>> irq15: ata1                           82          0
>>>>> irq16: uhci0 uhci3               5379815      29238
>>>>
>>>>
>>>> This looks similar to what I described in the "fwohci0 running wild" 
>>>> thread. In both cases, irq16 seems to cause the problem...
>>>
>>>
>>> Really.  Does this only happen with ACPI enabled?
>> 
>> Don't know about "only", since I have never booted this machine without 
>> ACPI. I'll test next time I'm rebooting.
> 
> Don't do it. I do it for testing a few minutes ago - and it
> prevents irq 16 from storming. But it does because the machine
> hangs at boot with:
> isa_probe_children: probing PnP devices
> 
> I let it probe for about 10 minutes (you'll never know :-)),
> but it wont do.

Grrr, ok.  Can you try the patch at
http://www.FreeBSD.org/~jhb/patches/io_apic.patch and nab a boot -v
dmesg with ACPI enabled?  Thanks.

-- 

John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/