Messages in this thread | | | Date | Wed, 2 Sep 1998 16:20:14 -0600 | From | yodaiken@chelm ... | Subject | Re: 2us Interrupt latency's for Linux 2.0.xx |
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APIC is hardware disabled on older boards. Not sure about newer boards.
On Wed, Sep 02, 1998 at 04:18:53PM -0700, Perry Harrington wrote: > I'm wondering, can the APIC be enabled for UP boards? If so, why > doesn't Linux enable the APIC as the default interrupt controller > for single processor Pentium+ systems? > > --Perry > > > > > > > > _external_ interrupts have much higher latencies. (especially as old > > > > XT-PIC interrupts halt the CPU for a considerable amount of time ... this > > > > is not the case with IO-APIC and inter-CPU interrupts.) > > > > > > > > -- mingo > > > > > > -- > Perry Harrington Linux rules all OSes. APSoft () > email: perry@apsoft.com Think Blue. /\
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--------------------------------- Victor Yodaiken Department of Computer Science New Mexico Institute of Mining and Technology Socorro NM 87801 Homepage http://www.cs.nmt.edu/~yodaiken PowerPC Linux page http://linuxppc.cs.nmt.edu Real-Time Page http://rtlinux.org
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