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Subject: Re: Memory benchmark comparison DDR333 vs RDRAM PC1066 !

Author: Matt Taylor

Date: 20:59:51 12/02/02

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>How can you use the hlt instruction? It's privileged, and you're in ring 3.

Nevermind. I forgot that the P4 introduced a pause instruction to reduce the
rate that spin loops execute at, creating less contention on the bus and
allowing the processor to run cooler. The pause instruction -ISN'T- privileged.



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