ZeroCopyNetzwerkverfahren

ZeroCopyNetzwe is a lightweight networking framework designed to reduce CPU overhead in high‑throughput data transfer scenarios. It achieves this by leveraging operating system zero‑copy primitives, allowing data to be moved directly between kernel buffers and application memory without intermediate copying. The framework is implemented as a set of user‑space libraries and kernel‑space modules that expose a simple API for establishing connections, sending and receiving data, and handling flow control.

The architecture follows a modular design. The transport layer is built around a scalable event loop that uses epoll on Linux and kqueue on BSD/macOS, providing efficient multiplexing of I/O events. The core zero‑copy engine uses the sendfile(2) and splice(2) system calls where supported, falling back to mmap‑based memory mapping otherwise. TCP and UDP sockets are supported, with optional support for RDMA (Remote Direct Memory Access) on platforms that provide the verbs interface.

ZeroCopyNetzwe offers optional congestion control and flow‑control mechanisms that can be tuned per‑connection. Users can specify scheduling policies for packet delivery, and the framework logs transfer statistics to assist in performance debugging. The API is documented in the form of header files and a reference manual, and example applications demonstrate usage on both server‑side services and client‑side streaming clients.

Designed primarily for data‑center workloads, benchmarks have shown a reduction in per‑packet CPU usage of up to 40% compared with traditional send/recv loops, while maintaining comparable latency. The project is released under an open‑source license, encouraging contributions from the networking community to extend protocol support, improve portability, and integrate with cloud orchestration platforms.