An example of traced I/O: $ LD SHOW/TRACE/ENTRIES=(12,23)/IOSB=COMBINATION LDA1: I/O trace for device _THEBUG$LDA1: 24-FEB-1994 16:36:56.31 on node THEBUG:: Start Time Elaps Pid Lbn Bytes Iosb Count Function ------------------------------------------------------------------- 20:52:30.01 00.02 202000C4 5 512 NORMAL 512 READPBLK 20:52:30.03 00.03 202000C4 5 512 NORMAL 512 WRITEPBLK|DATACHECK 20:52:30.07 00.00 202000C4 0 0 NORMAL 0 UNLOAD 23:16:18.05 00.00 202000C5 0 32 NORMAL 0 SETMODE|LINE_OFF 23:16:30.13 00.00 202000C5 0 11 NORMAL 0 SETMODE|LINE_ON|NEWLINE 23:17:05.70 00.05 202000C5 0 0 NORMAL 0 PACKACK|INHERLOG 23:17:05.76 03.22 202000C5 1 512 NORMAL 512 READPBLK 23:17:09.00 00.67 202000C5 608509 512 NORMAL 512 READPBLK 23:17:09.67 00.03 202000C5 608510 512 NORMAL 512 READPBLK 23:17:09.70 00.27 202000C5 608334 512 NORMAL 512 READPBLK 23:17:09.97 00.00 202000C5 608334 512 WRITLCK 0 WRITEPBLK 23:17:10.04 00.29 202000C5 608508 512 NORMAL 512 READPBLK