rem: printf("%3s %6s %6s %6s %6s %6s %6s %6s %6s %6s %6s\n",   " ", "total", "merged","sectors","ms","total","merged","sectors","ms","cur","s");
add: printf("%5s %6s %6s %7s %7s %6s %6s %7s %7s %6s %6s\n", " ", "total", "merged","sectors","ms","total","merged","sectors","ms","cur","sec");
context: static void diskheader(void){  printf("disk ----------reads------------ -----------writes----------- -------IO-------\n");  printf("%3s %6s %6s %6s %6s %6s %6s %6s %6s %6s %6s\n",   " ", "total", "merged","sectors","ms","total","merged","sectors","ms","cur","s");}