3 ms·
If nothing else, handling interrupts from the NIC to pull packets out of its receive buffer, though that should be usually be isolated to a couple of cores. Al
by sgarland 1y ago
If nothing else, handling interrupts from the NIC to pull packets out of its receive buffer, though that should be usually be isolated to a couple of cores.
Also, re: I/O, the CPU usually also has to handle interrupts there, as well as whatever the application might be doing either that I/O.
- quotemstr 1y ago> If nothing else, handling interrupts from the NIC to pull packets out of its receive buffer, Interrupts? Interrupts? We don't need no stinking interrupts! https://docs.kernel.org/networking/napi.html#poll https://docs.kernel.org/networking/napi.html#poll