Linux kernel tweak could cut data center power usage by up to 30%

A recent update to the Linux kernel, specifically version 6.13, introduces a small but significant enhancement that could lead to a 30% reduction in data center power usage. Developed by researchers at the University of Waterloo, the update optimizes data delivery to applications based on network traffic conditions. The new code, which consists of about 30 lines, adds a configuration parameter called irq_suspend_timeout. This allows the system to switch between polling and interrupt-driven modes for data delivery, depending on the network load. In heavy traffic scenarios, polling mode is more efficient, while interrupt-driven mode conserves resources during lighter traffic. This dual-mode approach maximizes application efficiency and minimizes energy waste. The implementation requires minor adjustments to applications and system settings. Although the exact energy savings are yet to be quantified, the potential for significant reductions in power consumption during light traffic periods is promising, especially for dedicated server applications in data centers.

- The Linux kernel update could reduce data center power usage by up to 30%.

- The enhancement optimizes data delivery based on network traffic conditions.

- It introduces a new configuration parameter for balancing CPU usage and network processing.

- The update allows automatic switching between polling and interrupt-driven modes.

- Minor adjustments to applications and system settings are needed for implementation.