faster alternative to memcpy?

Question

I have a function that is doing memcpy, but it\'s taking up an enormous amount of cycles. Is there a faster alternative/approach than using memcpy to move a piece of memory?

Answer 1

Please offer us more details. On i386 architecture it is very possible that memcpy is the fastest way of copying. But on different architecture for which the compiler doesn't have an optimized version it is best that you rewrite your memcpy function. I did this on a custom ARM architecture using assembly language. If you transfer BIG chunks of memory then DMA is probably the answer you are looking for.

Please offer more details - architecture, operating system (if relevant).