LS1046A QDMA Max Performance

[JSKIM]

I just wonder about qdma max performance.

I have tested QDMA on LS1046A with dma one channel. and the result is 3522240 KByte/s.

Is this result QDMA near maximum performance?

[BarryD]

Can you provide more details on how you measured this max qdma performance, such as which kernel, which driver, what app was run to make the measurement?

[yipingwang · Accepted solution]

Please refer to the following QDMA performance test data.

Memory	64B (KB)	512B (KB)	1KB	2KB	4KB	16KB	64KB	1M
DDR->DDR	774.8 Mbps	5279.6 Mbps	8671.1 Mbps	15112.7 Mbps	28929.2 Mbps	30340.5 Mbps	26293.4 Mbps	21256 Mbps