On a System Monitor Extended MIB

ITEM: RTA000086398



My customer is monitoring the following MIB extended by AIX System              
Monitor/6000 V1R2 and has some questions.                                       
                                                                                
 .1.3.6.1.4.1.2.6.12.2.9.3.2.1.6                                                
sm6kSystemUtilizationIostatTransfers(Average Number of Transfers)               
                                                                                
Q1.Is this MIB value equal to the 'tps' value gotten by                         
'iostat'command?                                                                
Q2. If Q1 is false, please let me know more detail information for this         
MIB variable.                                                                   
Sorry for such a minute question.  However we don't have enough                 
information to answer for such questions about MIBs' details...                 
                                                                                
                                                                                
ANSWER                                                                         
The IostatTransfers variable is the number of IO transfers within each          
of the monitoring intervals. The MIB object has 6 instances, representing       
intervals of 15 seconds, 30 seconds, 1 minute, 5 minutes, 15 minutes            
and one hour (see the IostatIntervalStartTime and IostatIntervalLength          
variables in the same table).                                                   
                                                                                
Note that:                                                                      
                                                                                
1. This is not the same as the tps (transfers per second) value given           
   by iostat. To get an equivalent value you would have to divide each          
   IostatTransfers instance by the corresponding interval length                
                                                                                
2. The description field in the MIB is incorrect. It says that the figure       
   is the average number of kilobytes transferred, where it should say          
   the number of transfers in the time interval                                
                                                                                
S e a r c h - k e y w o r d s:                                                  
IOSTAT SYSMON SIA IOSTATTRANSFERS                                               
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                               


WWQA: ITEM: RTA000086398 ITEM: RTA000086398
Dated: 12/1995 Category: ITSAI6000NV
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