Draft Document for Review February 7, 2020 3:15 pm 8464ch11_Monitoring.fm IOSTATS You can use the IOSTATS tool to measure job execution times. For example, you might want  to compare the TS7700 performance before and after configuration changes. IOSTATS tool is part of the  ibmtools.exe  file, which is available at the IBM Tape Tools FTP  site. IOSTATS can be run for a subset of job names for a specific period before the hardware is  installed. SMF type 30 records are required as input. The reports list the number of disk and  tape I/O operations that were done for each job step, and the elapsed job execution time. TAPEWISE As with IOSTATS, the TAPEWISE tool is available from the IBM Tape Tools FTP site. Based  on input parameters, TAPEWISE can generate the following reports: GLYPH<SM590000> Tape activity analysis, including reads and Disp=mod analysis GLYPH<SM590000> Mounts and MBs processed by hour GLYPH<SM590000> Input and output mounts by hour GLYPH<SM590000> Mounts by SYSID during an hour GLYPH<SM590000> Concurrent open drives used GLYPH<SM590000> Long VTS mounts (recalls) MOUNTMON As with IOSTATS, MOUNTMON is available from the IBM Tape Tools FTP site. MOUNTMON  runs as a started task or batch job and monitors all tape activity on the system. The program  must be authorized program facility (APF)-authorized and, if it runs continuously, it writes  statistics for each tape volume allocation to SMF or to a flat file. Based on data that is gathered from MOUNTMON, the MOUNTRPT program can report on  the following information: GLYPH<SM590000> How many tape mounts are necessary GLYPH<SM590000> How many are scratch GLYPH<SM590000> How many are private GLYPH<SM590000> How many by host system GLYPH<SM590000> How many by device type GLYPH<SM590000> How much time is needed to mount a tape GLYPH<SM590000> How long tapes are allocated GLYPH<SM590000> How many drives are being used at any time GLYPH<SM590000> What is the most accurate report of concurrent drive usage GLYPH<SM590000> Which jobs are allocating too many drives 11.6 Host Console Request Commands for monitoring 11.6.1 LI REQ,distlib,CACHE This section describes some of the host console request commands that are useful for  monitoring. For more information about the host console request commands, see  IBM  Virtualization Engine TS7700 Series z/OS Host Command Line Request User’s Guide ,  WP101091. The  LI REQ  command with the subcommand  CACHE  shows you the cache use of the cluster  that is defined in the command. Figure 11-36 on page 686 shows an example output. Chapter 11. Monitoring  685