.. considering I do radiotap inspection in promiscuous mode all the time (on laptops and embedded MIPS boards alike), I'm kinda interested in why you're seeing such high CPU utilisation. Are you trying to capture the whole frame? Or are you only capturing the header? It sounds like you only need the header, right? I agree with Felix - this is the kind of thing that it makes sense to define an API for so you can write in-kernel monitoring plugins. Then your monitoring plugin can decide how to aggregate and pass up the data. Adrian -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html