Overview
The document describes the procedure to measure the memory to memory copy performance by using SDMA on i.MX6Q.
Materials
Procedure
Result
root@freescale ~$ insmod /lib/modules/3.0.35-2666-gbdde708-g1c42f8b/test/mxc_sdma_memcopy_test.ko
SDMA test major number = 248
SDMA test Driver Module loaded
root@freescale ~$ /unit_tests/mxc_sdma_test.out
in dma_m2m_callback
65532byte / 0.003382sec
buffer 1 copy passed!
root@freescale ~$ /unit_tests/mxc_sdma_test.out
in dma_m2m_callback
65532byte / 0.003367sec
buffer 1 copy passed!
root@freescale ~$ /unit_tests/mxc_sdma_test.out
in dma_m2m_callback
65532byte / 0.003364sec
buffer 1 copy passed!
In summary, > 19Mbyte/sec
I am getting Failed open error on executing mxc_sdm_test.out. Do es anybody now what the problem could be?