Use memcpy, obviously slower than the speed on the DSP ARM, because the standard library for ARM is optimized, not optimized for DSP?

CodePudding user response:

Will may be related to other hardware differences, such as CPU, memory, etc

CodePudding user response:

Are you sure the performance at the same level?

CodePudding user response:

Frequency of bus bandwidth, memory takes into consideration the

CodePudding user response:

reference 3 floor early play play nuclear response:

bus bandwidth, memory frequency considering it

ARM, DSP on the same chip, bus bandwidth and memory is the same,
Doubt 1 memcpy libraries in view of the arm is optimized, but not for DSP,
2 DSP dma is not open the cache to cache read ahead,