I/O Process Monitorhttp://kernel.embedromix.ro/us/
pwatch is a set of tools to analyze what a process is doing.
Right now only 'io' (ex iotop) command is implemented.
It presents the I/O activity in a nice ncurses screen and you have the
possibility to sort by read/write speed ore amount of readed/written bytes from
the start of the program.
It was written to easly detect which program is eating a lot of I/O bandwidth.