I think a blktrace package is available now in the repositories of all of the major Linux distributions, with the possible exception of Red Hat Enterprise 5. It's installed by default on openSUSE 11.1, but in most of the other distros you have to install it. -- M. Edward (Ed) Borasky I've never met a happy clam. In fact, most of them were pretty steamed. -- To unsubscribe from this list: send the line "unsubscribe linux-btrace" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html