作者: Kurt M. Thaller , Paul M. Goodwin
DOI:
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摘要: A read buffering system employs FIFOs to hold sequential data for a number of streams being fetched by computer. When the sees command from CPU, it stores an incremented value address in history buffer and marks entry as valid. The detects stream when subsequent specifies that matches stored buffer. Upon detecting stream, fetches DRAMs at addresses follow command, FIFO. However, reduce unnecessary prefetching, looks X, write X+1 (where X designate addresses) succession commands so prevent them creating stream. This occurs often qualifies but is seldom followed other reads maintain checks this comparing with each valid match causes invalidate containing matched value. effectively disables use upon and, consequently, prefetching memory.