Start and stop time

Start and stop times can be at a time stamp within the trace, at a date and time within the trace, or at the beginning of the trace for start and at the end for stop. If you do not specify a start or stop time, the entire VIT is processed.

If you select At timestamp, another panel appears on which you may enter a System 370 time-of-day (TOD) time stamp. To ensure that the time stamp reflects your local time, you must add the time zone value to the high-order word. The time zone can be obtained from a dump, if the trace being used has been extracted from it, or by browsing the first time-stamp record from the trace in hexadecimal format. For example:

  A905470D237491E4   GMT TOD on a GTF trace record
+ FFFFBCF100000000   Time zone (padded with zeros)
  ----------------
  A90503FE237491E4   Local TOD

You can enter either the high-order 4 bytes of the time stamp, such as X'A90503FE', or all 8 bytes, such as X'A90503FE237491E4'.

Note: All hexadecimal time stamps reported by the VIT analysis tool are local time stamps. (The time zone has already been added.)

If you select At date and time, another panel appears on which you can enter both date and time selections.

The time can be:

hh:mm:ss
or
hh:mm:ss.ddd.

The date can be:

Calendar format (mm⁄dd⁄yy)
or
Julian format (yy.ddd).