Re: lapic_at_2k interrukts eating CPU cycles

Emanuel Strobl wrote:

> Am Mittwoch, 22. Juni 2005 09:06 schrieb Dag-Erling Smørgrav:
> 
>>Emanuel Strobl <Emanuel.strobl_at_gmx.net> writes:
>>
>>>I don't know what lapic stands for (the l, if apic means
>>>AdvancedProgrammableInterruptController)
>>
>>local, meaning per-CPU as opposed to the IOAPIC which is located in
>>the south bridge and shared by all CPUs.
> 
> 
> Hmm, why do I see a lapic on my UP system?

Because all x86 CPUs since the PentiumII have had an lAPIC built into them.

> I've never seen before I 
> upgraded to -current (short before the code freeze to help finding bugs)

Because you have 'options APIC' in your kernel, and your running a post 
5.2 version of FreeBSD that has a massively improved interrupt routing
system in it.

> And what does the "ti" mean? ( from systat "2030 lapic0: ti" )

Short for 'timer'

Scott