3 ms·
Indeed tun/tap performance is terrible, it seems to take about a whole CPU at gigabit.
by justincormack 11y ago
Indeed tun/tap performance is terrible, it seems to take about a whole CPU at gigabit.
- jsolson 11y agoThat, in general, is not the behavior I've observed on native hardware. Without getting into hard numbers, I routinely see multiple gigabits/second/core.
- justincormack 11y agoWith which options? Standard tap (or tun?), or macvtap? The last test I did (macvtap to an external interface but none of the offload options), a gigabit used a lot of CPU, like around a whole CPU just copying data.