DPDK Born In The Cloud

A typical feature of the cloud era is the rapid growth of data. According to Huawei GIV data, the global data volume is expected to reach 180ZB in 2025. Facing the explosion of network data, data center networks are also accelerating towards 25GE, 100GE, 400GE or even higher speeds. Accordingly, a battle around network data transmission optimization has also begun.

Under the traditional data transmission path, the surge in network data passes through the CPU to process data packets, making the CPU tired cope with it, and the system's overhead in scheduling the message processing core is a great waste of CPU resources. How to achieve efficient message transmission and processing to meet the high demand for data transmission in the cloud era become a  problem that the network communications industry needs to overcome. In this context, DPDK technology, which can significantly improve data processing performance and throughput emerged in the cloud.

DPDK uses DMA (Direct Memory Access) technology to realize zero-copy data transmission between the network card and the application, and improves the efficiency of data transmission during the operation. At the same time, the parallel computing power of multi-core processors is used to process multiple data packets, improve throughput, and release a large amount of CPU resources.

Many unique advantages make DPDK one of the data plane acceleration technologies widely used in industry.

DPDK is used in network cards and has significant advantages when transmitting and processing data.

On the one hand, the network card can use DPDK technology to bypass the operating system kernel and directly access the hardware device, thereby achieving efficient packet processing. It can avoid the overhead of kernel mode switching and system calls, and save CPU resources while effciently reducing packet processing and throughput losses, reducing latency, and providing better help for latency-sensitive applications.

On the other hand, the network card processes multiple data packets through the multi-threading and multi-queue technology in DPDK, thereby achieving high-throughput data packet processing capabilities. It is remarkable for high-density data flow processing scenarios such as data centers, cloud computing, and big data.

In conclusion, the importance of DPDK technology is obviously. Therefore, LR-LINK introduced this technology in the process of development and design. Most server network cards support the DPDK function to ensure stable and rapid transmission of user data so that users can use it on servers, network equipment, and cloud computing platforms, helping enterprises with digital construction, and achieve cloud migration as soon as possible.