Buffer copying latency

Hi, Sorry if it is a naive question. I would like to know if there are any measurements made on a typical Pentium machine with respect to the latency for buffer copying from the user to kernel and vice versa. While there are many papers, and arguments that attempt to ban buffering copying of an

Can Linux remain to be general purpose OS ?

Hi, I have been following Linux kernel development for many years. Of late there seems to be a general trend in expecting Linux kernel to do specialized tasks to cater to specific end-user applications. This could even mean that the kernel algorithms that make Linux a generic OS may have to be