6. DATA SOURCES › 6.8 Print Activity Measurements

6.8 Print Activity Measurements

Printer activity occurs throughout the I/S facility at both
the central processing site and at the remote and NJE nodes
that make up a processing network.  When a SYSOUT data set
is opened by a job step, started task, or TSO session, the
JES subsystem is responsible for the SYSOUT I/O.  As the
output is generated, it is written to the JES spool.  When
the job ends or the SYSOUT data set is closed and the output
is freed (by coding FREE=CLOSE in the JCL), a writer may
print the output on a physical printer (unless the STSOUT was
generated with a hold specification, in which case it must be
released from the spool before it can print).

SMF provides measurements on printer activity via the SMF
type 6 Output Writer Records.  There are a variety of
different SMF type 6 records originating from a number of
writer subsystems, including:

o  JES2
o  JES3
o  External Writer
o  PSF (Print Services Facility)
o  IBM PrintWay (TCP/IP transmission)

The following section covers the information available about
print activity:

    1 - CA MICS Print Measurements