I am not sure how user stack tcp or DPDK would get around the power consumption issues of kernel polling. Infact the usage I am aware of pretty much involve pol

I am not sure how user stack tcp or DPDK would get around the power consumption issues of kernel polling. Infact the usage I am aware of pretty much involve polling in user mode because any context switch or O/S scheduling related overhead is excessive. The only thing you can do is to keep your task queue full so as to always be doing something.