The Disk Utilization summary of the Resource interval report displays detailed disk information by time intervals.
Information is shown for all disk arms that are configured on the system. Also, the disk arm with the highest utilization and the disk arm with the highest average seek time for each time interval are shown. Consistent disk arm utilization at or above the threshold value will affect system performance and cause longer response times and/or less throughput. Changes to this section of the report include:
- The values under the Disk Space Used column are now expressed in gigabytes.
Example
Resource Interval Report 08/30/05 13:20:51
Disk Utilization Summary Page 1
Member . . . : PTFVTR54 Model/Serial . : 825/10-D0BFD Main storage . . : 3072.0 MB Started . . . : 08/05/05 09:00:01
Library . . : PTFVTR54 System name . . : MEXGPL08 Version/Release . : 5/4.0 Stopped . . . : 08/05/05 11:00:00
Partition ID : 001 Feature Code . : 7418-2473-7418
Average Average Average High High High Disk
Itv Average Reads Writes K Per Avg High Util Srv Srv Space
End I/O /Sec /Sec /Sec I/O Util Util Unit Time Unit Used (GB)
----- --------- -------- -------- ------- ----- ----- ---- ----- ---- -----------
09:05 29.2 3.5 25.7 6.6 .7 1.4 0003 .0012 0003 92.776
09:10 10.8 .8 9.9 7.7 .3 .6 0002 .0017 0002 92.782
09:15 10.6 .8 9.7 7.8 .2 .3 0003 .0008 0003 92.788
09:20 10.9 1.0 9.9 7.7 .0 .1 0002 .0004 0002 92.795
09:25 21.5 7.2 14.3 9.3 1.1 1.6 0001 .0022 0001 92.822
09:30 18.3 4.2 14.1 10.3 .5 .6 0001 .0014 0001 92.829
09:35 18.6 7.6 11.0 7.1 .6 1.0 0001 .0014 0001 92.857
09:40 36.5 8.7 27.7 6.9 1.3 1.6 0003 .0017 0003 92.811
09:45 19.6 3.4 16.1 7.3 .3 .8 0001 .0012 0001 92.818
09:50 10.6 1.1 9.4 7.8 .3 1.0 0001 .0033 0001 92.835
09:55 10.0 .8 9.2 8.0 .3 .8 0001 .0026 0001 92.841
10:00 53.8 14.8 38.9 8.4 1.6 2.1 0001 .0015 0001 92.892
10:05 37.0 16.4 20.5 10.3 1.8 2.1 0001 .0025 0001 92.903
10:10 224.0 138.7 85.2 8.9 14.1 14.8 0001 .0022 0001 92.913
10:15 66.4 22.1 44.2 11.9 1.5 3.0 0003 .0009 0003 92.974
10:20 166.5 33.0 133.4 7.8 2.8 4.3 0003 .0006 0003 92.980
10:25 161.9 41.5 120.3 9.2 3.3 5.1 0003 .0007 0003 92.957
10:30 24.8 8.7 16.0 10.4 1.3 1.5 0003 .0022 0001 93.018
10:35 13.9 4.0 9.9 8.6 .9 1.3 0003 .0028 0003 93.060
10:40 23.9 8.0 15.8 8.7 .7 1.3 0003 .0014 0003 93.075
10:45 14.1 3.4 10.7 8.3 .6 .8 0003 .0017 0003 92.988
10:50 43.8 12.4 31.3 7.4 .6 .8 0001 .0008 0001 92.982
10:55 29.9 2.8 27.1 8.4 .5 .8 0002 .0007 0002 93.008
11:00 31.0 4.3 26.7 5.8 .5 .8 0003 .0000 0003 92.999
--------- -------- -------- ------- -----
Average: 45.3 14.6 30.7 8.6 1.5
Itv End -- Interval end time (hour and minute)
Average Phys I/O /Sec -- Average number of physical I/O operations per second
Average Reads / Sec -- Average number of physical reads per second
Average Writes /Sec -- Average number of physical writes per second
Average K Per I/O -- Average number of kilobytes (1024) per I/O operation
Avg Util -- Average percent utilization of all disk arms
High Util -- Highest percent utilization for a disk arm
High Util Unit -- Disk arm with the highest utilization percent
High Srv Time -- Highest average service time in seconds
High Srv Unit -- Disk arm with the highest service time
Disk Space Used -- Total disk space used in Gigabytes (1024)