NAPI (New API) - Does not use hardware interrupts, and polls the Ethernet-device every certain period of time. The Linux kernel uses the interrupt-driven mode by default and only switches to polling mode when the flow of incoming packets exceeds a certain threshold.
Writing Network Device Drivers for Linux LG #156 Writing Network Device Drivers for Linux. By Mohan Lal Jangir. Introduction. This article has been written for kernel newcomers interested in learning about network device drivers. It assumes that reader has a significant exposure to C and the Linux environment. This article is based on a network driver for the RealTek 8139 network card. Как протестировать функцию NAPI в Linux? Flip Linux Я написал всеобъемлющее сообщение в блоге о настройке сети Linux, в котором объясняется все, что касается мониторинга, настройки и оптимизации сетевого стека Linux (включая вес NAPI). Címoldal - Napi.hu A Napi.hu ill. az Inda-Labs Zrt. szerződött partnerei által alkalmazott sütik leírása A Honlapon más szolgáltatások üzemeltetői is helyezhetnek el sütiket. Ezen szolgáltatók a Napi.hu-val vagy az Inda-Labs Zrt-vel szerződésben állhatnak, azonban a sütiket a Napi.hu-tól ill. az Inda-Labs Zrt-től függetlenül, saját Linux networking stack from the ground up, part 3
napi The “New API” (NAPI) is a rework of the packet processing code in the kernel to improve performance for high speed networking. Interrupt mitigation: High-speed networking can create thousands of interrupts per second, all of which tell the system something it already knew: it has lots of packets to process.
Я написал всеобъемлющее сообщение в блоге о настройке сети Linux, в котором объясняется все, что касается мониторинга, настройки и оптимизации сетевого стека Linux (включая вес NAPI). Címoldal - Napi.hu
networking - How to change receive queue length of a
When driver napi->poll() is called from the Busy Poller group, it would naturally handle incoming packets, delivering them to another queues, being sockets or a qdisc/device. Network Devices, the Kernel, and You! — The Linux Kernel NAPI_STATE_SCHED bit in napi->state. Device driver’s ndo_stop method will invoke napi_disable() on all NAPI instances which will do a sleeping poll on the NAPI_STATE_SCHED napi->state bit, waiting for all pending NAPI activity to cease. Useful kernel and driver performance tweaks for your Linux napi The “New API” (NAPI) is a rework of the packet processing code in the kernel to improve performance for high speed networking. Interrupt mitigation: High-speed networking can create thousands of interrupts per second, all of which tell the system something it already knew: it has lots of packets to process.