Messages in this thread | | | Date | Sun, 30 Mar 2008 21:18:21 -0500 | From | Jack Steiner <> | Subject | Re: [RFC 8/8] x86_64: Support for new UV apic |
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> > if the calling path like GET_APIC_ID is keeping checking if it is UV > box after boot time, that may not good. > > don't need make other hundreds of machine keep running the code only > for several big box all the time. > > YH
I added trace code to see how often GET_APIC_ID() is called. For my 8p AMD box, the function is called 6 times per cpu during boot. I have not seen any other calls to the function after early boot although I'm they occur under some circumstances.
Can you think of a workload where the frequency of calls is high enough to be significant??
--- jack
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