iowait
CPU idle time while at least one process waits for the disk: wa in top and vmstat, %iowait in iostat and mpstat. It is a kind of idle time: when the CPU has other work, wa drops to zero although the disk is still busy.
CPU idle time while at least one process waits for the disk: wa in top and vmstat, %iowait in iostat and mpstat. It is a kind of idle time: when the CPU has other work, wa drops to zero although the disk is still busy.