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MESI protocol

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The MESI protocol is an Invalidate-based cache coherence protocol, and is one of the most common protocols that support write-back caches. It is also known as the Illinois protocol (due to its development at the University of Illinois at Urbana-Champaign). Write back caches can save a lot on bandwidth that is generally wasted on a write through cache. There is always a dirty state present in write back caches that indicates that the data in the cache is different from that in main memory. The Illinois Protocol requires a cache to cache transfer on a miss if the block resides in another cache. This protocol reduces the number of main memory transactions with respect to the MSI protocol. This marks a significant improvement in performance.

MESI protocol - Wikipedia Jump to content From Wikipedia, the free encyclopedia Cache coherence protocol for computer processors This article needs more citations . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . Find sources: "MESI protocol" – news · newspapers · books · scholar · JSTOR ( May 2023 ) ( Learn how and when to remove this message ) The MESI protocol is an invalidate-based cache coherence protocol , and is one of the most common protocols that support write-back caches . It is also known as the Illinois

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