The following is a demonstration of the iofileb.d script,

Here we run it while a tar command is backing up /var/adm,

# ./iofileb.d

Tracing... Hit Ctrl-C to end.

^C

PID CMD KB FILE

29529 tar 56 /var/adm/sa/sa31

29529 tar 56 /var/adm/sa/sa03

29529 tar 56 /var/adm/sa/sa02

29529 tar 56 /var/adm/sa/sa01

29529 tar 56 /var/adm/sa/sa04

29529 tar 56 /var/adm/sa/sa27

29529 tar 56 /var/adm/sa/sa28

29529 tar 324 /var/adm/exacct/task

29529 tar 736 /var/adm/wtmpx

In the above output, we can see that the tar command has caused 736 Kbytes

of the /var/adm/wtmpx file to be read from disk. All af the Kbyte values

measured are for disk activity.