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我在官方给的SRIO例程的基础上C6678 SRIO_SERDES_LOOPBACK测试时,数据从DDR读出,然后写入DDR,测试1X、2X、4X模式速率发现2X模式是1X的两倍速,但是4X模式却没有1X模式的四倍,且差的很多,我降低SRIO的速度,2.5Gbps依然是达不到,请问是什么原因?
请试试增加 Payload size。请参考附件SRIO的性能测试数据。1512.Throughput Performance Guide for C66x KeyStone Devices (Rev. A) (2).pdf