If you want to time stamp the show commands along with current CPU utilization for a particular session, issue the following command.
terminal exec prompt timestamp
enable
Sample Output:
cs1#show run
Load for five secs: 0%/0%; one minute: 1%; five minutes: 1%
Time source is NTP, *11:00:00.713 Pacific Wed Feb 25 2009
Building configuration...
Current configuration : 30463 bytes
!