Thursday, October 28, 2010

MESI,MSI

MSI - modified,shared,invalid state of cache protocol

Cache Invalidation and Flushing
The VIRTUAL address is the argument for invalidation and flushing

wbinvd ---- writes cache back to memory and marks it empty
invd ---- just marks the cache as invalid without writing to ram

Excellent optimization tip
http://www.agner.org/optimize/

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