4 ms·
Practically none of it would be applicable (if using a commercial router). They all use hardware offloading, and traffic seldom touches the CPU. Only "logical"
by tuetuopay 2y ago
Practically none of it would be applicable (if using a commercial router). They all use hardware offloading, and traffic seldom touches the CPU. Only "logical" tasks are raised to the CPU, like ARP resolution and the likes (what’s called "trap to cpu").
If you’re doing custom routing with a NUC or a basic Linux box, however, this would gain massive power savings because that box pretty much only does networking.
- ori_b 2y agoOnly if you're using busy polling. Very little software uses it, because it's only a good fit if you think pegging a CPU to reduce latency responding to packets is a good trade.
- tuetuopay 2y agoYup, you’re right. I always forget this patch only applies to opted-in polling and not automatic polling for interrupt moderation.
- mrheosuper 2y agoif you run a VPN server, i assume all the traffic will come to CPU to decrypt, right?