DCMT DISPLAY Commands › DCMT DISPLAY SUBTASK Command › Example: DCMT DISPLAY SUBTASK Command › zIIP-Enabled Examples with a zIIP Processor

zIIP-Enabled Examples with a zIIP Processor

The following series of examples illustrate a CA IDMS system running in multitasking mode with zIIP support enabled. The displays were obtained on hardware that contained five CPs and one zIIP.

DCMT DISPLAY SUBTASK 0001

 *** Display Subtask details ***                                              
                          Name  MAINTASK                                      
                        Number  01                                            
                        Status  IDLE                                          
                     Work type  IDMS                                          
                 Count wakeups  3,814                                         
         Count task dispatches  3,952                                         
            User mode CPU time  00:00:00.000955                               
          System mode CPU time  00:00:00.953883                               
         CPU effectiveness (%)  09                                            
       Count times fast posted  15                                            
         Count times OS posted  00                                            
       Count found work pass 1  3,869                                         
       Count found work pass 2  83                                            
  Count times POSTEXIT resumed  3,814                                         
                       *** Enclave Info ***                                   
                     zIIP time  00:00:00.099662                               
               zIIP on CP time  00:00:00.000000                               
         CPU effectiveness (%)  75                                            
           Count swap attempts  8,072                                         
            Count actual swaps  8,065                                         

DCMT DISPLAY SUBTASK 0006

The following example illustrates the additional information provided for the preferred subtask:

      D SUBT 0006                                                             
 *** Display Subtask details ***                                              
                          Name  SUBT0005                                      
                        Number  06                                            
                       Status  IDLE                                          
                     Work type  IDMS                                          
                 Count wakeups  83                                            
         Count task dispatches  1,667                                         
            User mode CPU time  00:00:00.002093                               
          System mode CPU time  00:00:00.037788                               
         CPU effectiveness (%)  11                                            
       Count times fast posted  02                                            
         Count times OS posted  00                                            
       Count found work pass 1  1,376                                         
       Count found work pass 2  291                                           
  Count times POSTEXIT resumed  83                                            
                       *** Enclave Info ***                                   
                     zIIP time  00:00:00.011148                               
               zIIP on CP time  00:00:00.000000                               
         CPU effectiveness (%)  13                                            
           Count swap attempts  1,767                                         
            Count actual swaps  1,761                                         

DISPLAY SUBTASK EFFECTIVENESS

The following example illustrates whether zIIP support is active by subtask. It includes CPU statistics for each subtask and associated SRB, and percentage comparison of CPU effectiveness.

      D SUBT EFF                                                               
 *** Subtask display ***                                                        
Subtask          Elapsed time                  Total CPU time         % CPU  SRB
 Name         TCB            SRB            TCB            SRB       TCB SRB    
-------- -------------- -------------- -------------- -------------- --- ---    
MAINTASK   00:09.273726   00:00.131952   00:00.854224   00:00.099662  09  75  Y 
SUBT0001   00:00.000142   00:00.000015   00:00.000032   00:00.000000  22  00  Y 
SUBT0002   00:00.000074   00:00.000011   00:00.000021   00:00.000000  28  00  Y 
SUBT0003   00:00.000117   00:00.000029   00:00.000045   00:00.000000  38  00  Y 
SUBT0004   00:00.007514   00:00.001178   00:00.006361   00:00.000600  84  50  Y 
SUBT0005   00:00.112166   00:00.019377   00:00.017645   00:00.007029  15  36  Y 
SUBT0006   00:02.799915   00:02.270030   00:01.109634   00:00.827857  39  36  Y 
-------- -------------- -------------- -------------- -------------- --- ---    
Totals     00:12.193658   00:02.422595   00:01.987965   00:00.935150  16  38    
V214  ENTER NEXT TASK CODE:      CA IDMS release 18.0 tape GJI00B node SYSQA14