3 ms·
Makes sense, they're probably using QUIC in lots of products and the kernel can't accelerate that anyways, it would only pass opaque UDP packets to and from the
by nolist_policy 3y ago
Makes sense, they're probably using QUIC in lots of products and the kernel can't accelerate that anyways, it would only pass opaque UDP packets to and from the application.
- devonkim 3y agoLast I remember as of at least 7 years ago Google et al were using custom NIC firmware to avoid having the kernel get involved in general (I think they managed to do a lot of Maglev directly on the NICs) because latency is so dang important at high speed networking speeds that letting anything context switch and need to wait on the kernel is a big performance hit. Not a lot of room for latency when you're working at 100 Gbps.