dumb buffer dma
时间: 2023-10-27 07:07:50 浏览: 48
"Dumb buffer DMA" refers to a type of direct memory access (DMA) technique used in computer systems. In this technique, a DMA controller is used to transfer data between devices and memory without the intervention of the CPU. The term "dumb buffer" refers to a block of memory that is used as a temporary storage location for the data being transferred.
In dumb buffer DMA, the DMA controller transfers data to or from the dumb buffer without any processing or manipulation. The CPU is not involved in these operations, which allows for faster data transfer rates and reduces the load on the CPU.
However, this technique has some limitations. For example, it is not suitable for transferring data that requires processing or manipulation, as the DMA controller cannot perform these tasks. Additionally, dumb buffer DMA may not be compatible with certain types of devices or architectures.