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Date: Wed, 22 Jun 2005 07:57:58 -0600
From: Scott Long <scottl@samsco.org>
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To: Emanuel Strobl <Emanuel.strobl@gmx.net>
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Cc: =?ISO-8859-1?Q?Dag-Erling_Sm=F8rgrav?= <des@des.no>,
	freebsd-current@freebsd.org
Subject: Re: lapic@2k interrukts eating CPU cycles
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Emanuel Strobl wrote:

> Am Mittwoch, 22. Juni 2005 09:06 schrieb Dag-Erling Smørgrav:
> 
>>Emanuel Strobl <Emanuel.strobl@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