StorageTek Host Software Component 6.0, System Programmer'S Manual

Page: 293 / 718

Chapter 4. Utility Functions 263
1st ed., 6/30/04 - 312579601
Performance Log Reblocker Utility
The Performance Log Reblocker utility is used by sites sharing an ACS between MVS and
VM hosts. The utility is used to reformat the VM performance log data to a common
format similar to that of the MVS/SMF data. This data is then used as input for the
Activities Report utility. The Performance Log Reblocker utility is required to reconstruct
the original-image SMF data; different versions are provided to execute in the CMS and
MVS environments.
This utility prepares the generated performance log (SMF data) for use by the Activities
Report utility.
SMF records passed to the SCP (see the glossary for a definition of SCP) are variable in
length and can be up to 32K bytes long. The SCP breaks these records into sections that fit
in a VM punch spool file, and passes reblocking information with each segment.
The CMS version takes SCP performance log output (without any header/trailer data) and
reads it into a CMS file without altering the internal format of the records. The CMS
version of the Activities Report utility (SLUACTV EXEC) reconstructs the original SMF
record images during its own execution.
The MVS version reads the SCP performance log data and creates data set records
reblocked into the original SMF record format and length. Then, as specified by the
PERFJCL trailer data, the reblocked SMF data optionally may be merged with SMF data
created on the MVS system.
Syntax (CMS Statement)
Performance Log Reblocker utility
Parameters
spoolid
the VM spoolid of a punch file in the caller’s virtual reader. This parameter is
required.
fname
the CMS filename of the output file. The default is SLUPERF.
ftype
the CMS filetype of the output file. The default is PERFLOG.
SLUPERF spoolid
SLUPERF
fname
PERFLOG
fname
A2
fmode
(APPend
Performance Log Reblocker