Resource Interval Report - IOP Utilizations

The IOP Utilizations section of the Resource Interval Report contains a combination of input/output processor (IOP) utilizations

These utilizations are:

Disk IOP utilizations: Gives input/output processor (IOP) utilization for direct access storage devices (DASDs). Consistent Disk IOP utilization at or above the threshold value affects system performance and causes longer response times and/or less throughput.
Multifunction IOP utilizations: Gives input/output processor (IOP) utilization for DASD, communication, and local workstation devices. Consistent utilization at or above the threshold value affects system performance and causes longer response times and/or less throughput.
Communications IOP utilizations: Gives communications input/output processor (IOP) utilization.
Local work station IOP utilizations: Gives input/output processor (IOP) utilization for local workstation devices.

Example

Note: The total for the I/O processor utilization oftentimes does not match the sum of the three columns (IOP Processor Util Comm, IOP Processor Util LWSC, and IOP Processor Util DASD). This mismatch is caused by the utilization of other small components, such as system time.

                                                      Resource nterval Report                                    10/03/03 2:42:33
                                                          IOP tilizations                                                 Page 27
                                               Perf data from 14:00 o 16:00 at 1 min
 Member  . . . : Q275140000 Model/Serial  . : 890/10-3907F        
Main storage  . . : 56.4 GB   Started . . . : 10/02/03 14:00:00
   Library . . : PTLIBV5R3  System name . . : ABSYSTEM            
Version/Release . :   5/3.0   Stopped . . . : 10/02/03 16:00:00
 Partition ID  : 003        Feature Code  . : 7427-2498-7427
IOP Name/          Itv  - IOP Processor Utils -     DASD Ops per sec     - KB per I/O -   KBytes Transmitted    Avail Local
 (Model)           End  Total  Comm  LWSC  DASD    Reads       Writes    Read    Write      IOP      System     Storage (K) Util 2
----------------- ----- ----- ----- ----- ----- ----------- ---------- ------- ------- ----------- ----------- ----------- -----
CMB05      (2843) 14:00    .4    .0    .0    .0                                                  2           0      63,513     .0
                  14:05    .4    .0    .0    .0                                                  3           0      63,513     .0
                  14:10    .4    .0    .0    .0                                                  2           0      63,513     .0
                  14:15    .4    .0    .0    .0                                                  2           0      63,513     .0
                  14:20    .4    .0    .0    .0                                                  2           0      63,513     .0
                  14:25    .4    .0    .0    .0                                                  2           0      63,513     .0
                  14:30    .4    .0    .0    .0                                                  2           0      63,513     .0
                  14:35    .4    .0    .0    .0                                                  2           0      63,513     .0
                  14:40    .4    .0    .0    .0                                                  2           0      63,513     .0
                  14:45    .4    .0    .0    .0                                                  3           0      63,513     .0
                  14:50    .4    .0    .0    .0                                                  2           0      63,513     .0
                  14:55    .4    .0    .0    .0                                                  2           0      63,513     .0
                  15:00    .4    .0    .0    .0                                                  2           0      63,513     .0
                  15:05    .4    .0    .0    .0                                                  2           0      63,513     .0
                  15:10    .4    .0    .0    .0                                                  2           0      63,513     .0
                  15:15    .4    .0    .0    .0                                                  2           0      63,513     .0
                  15:20    .4    .0    .0    .0                                                  3           0      63,513     .0
                  15:25    .4    .0    .0    .0                                                  2           0      63,513     .0
                  15:30    .4    .0    .0    .0                                                  2           0      63,513     .0
                  15:35    .4    .0    .0    .0                                                  2           0      63,513     .0
                  15:40    .4    .0    .0    .0                                                  2           0      63,513     .0
                  15:45    .4    .0    .0    .0                                                  2           0      63,513     .0
                  15:50    .4    .0    .0    .0                                                  2           0      63,513     .0
                  15:55    .5    .0    .0    .0                                                  2           0      63,513     .0
                  16:00    .5    .0    .0    .0                                                  3           0      63,513     .0
 IOP Name/                -- Input/Output processor resource name and
 (Model)                     model number of the attached device
 Itv End                  -- Interval end time (hour and minute)
 IOP Processor Util Total -- Total utilization for IOP
 IOP Processor Util Comm  -- Utilization of IOP due to communications activity
 IOP Processor Util LWSC  -- Utilization of IOP due to local workstation activity
 IOP Processor Util DASD  -- Utilization of IOP due to DASD activity
 DASD Ops per sec Reads   -- Number of reads per second
 DASD Ops per sec Writes  -- Number of writes per second
 K Per Read               -- Average number of kilobytes (1024) per read operation
 K Per Write              -- Average number of kilobytes (1024) per write operation
 IOP KBytes Transmitted   -- Number of Kbytes transmitted from the IOP to the system across the bus
 System KBytes Transmitted-- Number of Kbytes transmitted from the system to the IOP cross the bus
 Avail Local Storage (K)  -- Number of kilobytes (1024) of local storage that is free
 Util 2                   -- Utilization of co-processor