3 ms·It’s a ring buffer. Not sure what the u is. Micro?by the_mitsuhiko 5y agoIt’s a ring buffer. Not sure what the u is. Micro?gpderetta 5y agouserspace?yxhuvud 5y agoNo, it is two ring buffers, with the kernel in between moving requests from one side to the other. My guess is that the name describes the shape.