BUFFER MANAGEMENT FOR IMPROVING PCI-X OR PCI BRIDGE PERFORMANCE

摘要

PROBLEM TO BE SOLVED: To provide a buffer management technology for improving PCI (peripheral component interconnect)-X or PCI bridge performance. SOLUTION: A usable free block is set before a transaction is processed. A usable actual buffer space is expected to be released to reach the usable free block. When the transaction side is not larger than the usable actual buffer space, the transaction is accepted and when the transaction size is smaller than the usable free block, but larger than the usable actual buffer space, the transaction is retried; when the transaction size is larger than the usable free block and also larger than the usable buffer space, the transaction is accepted until the usable buffer space becomes larger than the usable free block.