StorageTek Host Software Component 6 User Manual

1st ed., 6/30/04 - 312579601

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. 

the VM spoolid of a punch file in the caller’s virtual reader. This parameter is 
required. 

the CMS filename of the output file. The default is SLUPERF. 

the CMS filetype of the output file. The default is PERFLOG.