1. THE CA MICS APPLICATION EXTENSION FOR ASTEX › 1.3 Files

1.3 Files

The CA MICS Application Extension for ASTEX stores its data
in the ASTEX Information Area (AST) in the following files:

o ASTEX Volume Activity File (ASTAVO)

  The ASTAVO file contains information that quantifies cache
  and DASD I/O activity at the VOLUME level.  The source of
  this information is the ASTEX volume record.  The ASTAVO
  file is summarized by SMF SYSID, SMS Storage Group, VOLSER,
  and Device Address.

o ASTEX Storage Group Activity File (ASTASG)

  The ASTASG file contains information that quantifies DASD
  I/O activity at the SMS Storage Group level.  The source of
  this information is the ASTEX volume record.  The ASTASG
  file is summarized by SMF SYSID and SMS Storage Group.

o ASTEX LCU/Cache Activity File (ASTALC)

  The ASTALC file contains information that quantifies cache
  I/O activity at the Logical Control Unit level.  The source
  of this information is the ASTEX volume record.  The ASTALC
  file is summarized by SMF SYSID and ASTEX Contention Group.

o ASTEX Data Set Exception File (ASTADS)

  The ASTADS file contains information that quantifies cache
  and DASD I/O activity for individual data sets.  The source
  of this information is the ASTEX data set record.  The
  ASTADS file is summarized by SMF SYSID, SMS Storage Group,
  VOLSER, and Data Set Name.

o ASTEX Job Exception File (ASTAJB)

  The ASTAJB file contains information that quantifies cache
  and DASD I/O activity for MVS batch jobs.  The source of
  this information is the ASTEX job record.  The ASTADS file
  is summarized by SMF SYSID, SMS Storage Group, VOLSER, SRM
  Performance Group, and Jobname.
There are some data elements in the ASTEX Volume Activity
file that are comparable to elements in the CA MICS Hardware
Device Activity file (HARDVA) in the MVS Hardware and SCP
Analyzer.  The elements are:

- I/O Events (AVOIOCNT, DVAMEC)
- XA I/O Events (AVOXACNT, DVASSC)
- Average Response Time (AVOAVRES, DVAAVRES)
- Pending Time (AVOPENTM, DVAPEN)
- Average Pending Time (AVOAVPEN, DVAAVPEN)
- Connect Time (AVOCONTM, DVACNN)
- Average Connect Time (AVOAVCNN, DVAAVCNN)
- Disconnect Time (AVODISTM, DVADIS)
- Average Disconnect Time (AVOAVDIS, DVAAVDIS)
- Average IOSQ Time (AVOAVIOS, DVAAVIOS)

A small difference is normal between the two files for the
same recording interval for the following reasons:

o  Even if RMF and ASTEX have the same time interval, they
   will rarely cut collection records at the same instant in
   time.

o  The values of some of the RMF fields are based on a
   sampling rate while ASTEX measures every I/O event.