Hi Rajasekhar, Power Management API can “put the CPU into optimized power state and monitor the Ethernet PMD RX descriptor address, waking the CPU up whenever there’s new traffic”.

Please take a look at the rte_power_monitor() and dpdk-l3fwd-power application example to see if it works for you. What platform do you use? It is only supported on recent Intel CPUs and ARMs.

Regards,

Alex

From: Rajasekhar Pulluru <pullururajasekhar@gmail.com>
Sent: March 10, 2023 15:57
To: dev@dpdk.org
Subject: Dpdk packet reception

Hi Team,

Would like to know if dpdk has a select(fd)/epoll(fd) like mechanism to wake-up the application (say rx-pthread) asynchronously upon packet reception without enabling rxq interrupts? 

I can't afford to lose a cpu-core polling continuously to check for packets using rte_eth_rx_burst.And I only have 1 core to receive packets from multiple ports.I don't want to use usleep of fixed timeout between rte_eth_rx_burst api invocation, as it potentially could lead to packets being rx-missed in 1 or more ports.

Thanks & Regards,

Rajasekhar