Linux 7.4 Networking Brings Hardware Pacing Offload, New Drivers More Performance
Curated from Phoronix
The Linux 7.4 merge window highlights a significant shift in how kernel developers prioritize network efficiency. By integrating hardware pacing offloads, the kernel moves traffic shaping responsibilities from CPU-intensive software queues to dedicated NIC hardware. This is a critical architectural change for high-throughput environments where consistent latency matters more than raw burst speed. For SREs and platform engineers, this reduces context switching overhead and provides more deterministic behavior under load, particularly for services sensitive to jitter. The inclusion of new drivers further expands hardware support, ensuring that modern infrastructure components can leverage these performance gains without custom patches. Concrete takeaway: Review your NIC capabilities and update your kernel to 7.4 to test if hardware pacing offloads can reduce CPU utilization in your egress traffic paths.
The many Linux wired and wireless networking driver improvements were merged this week for the ongoing Linux 7.4 merge window....
— Phoronix