lapic@2k interrukts eating CPU cycles
Scott Long
scottl at samsco.org
Wed Jun 22 14:01:05 GMT 2005
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
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