The Disk Utilization Detail section of the Resource interval report displays detailed disk information for the selected time intervals.
Information is shown for each disk arm that is configured on the system. Consistent disk arm utilization at or above the threshold value affects system performance and causes longer response times or less throughput.
A plus (+) sign displays next to the Unit column to identify multipath disk units.
Resource Interval Report 10/03/03 15:24:49 Disk Utilization Detail Page 3 Multipath disk data Member . . . : Q119115948 Model/Serial . : 840/10-3A6HM Main storage . . : 1024.0 GB Started . . . : 04/29/03 11:59:48 Library . . : MPLIB System name . . : ABSYSTEM Version/Release . : 5/3.0 Stopped . . . : 04/30/03 00:00:00 Partition ID : 001 Feature Code . : 23FE-2420-1546 IOP Name/ ASP Rsc ASP Itv --------- I/O Per Second --------- K Per Dsk CPU Queue Avg Time Per I/O Unit (Model) Name Id End Total Reads Writes I/O Util Util Length Service Wait ---- ----------------- ---------- --- ----- ---------- --------- --------- ------- ------- ----- ------- ------- ----- + 0004 CMB08 (2105) 5 12:15 .000 .000 .000 .0 11.4 .0 .00 .0000 .0000 12:15 .000 .000 .000 .0 9.0 .0 .00 .0000 .0000 12:15 .000 .000 .000 .0 21.0 .0 .00 .0000 .0000 12:30 .000 .000 .000 .0 6.7 .0 .00 .0000 .0000 12:30 .000 .000 .000 .0 6.7 .0 .00 .0000 .0000 12:30 .000 .000 .000 .0 6.7 .0 .00 .0000 .0000 12:45 .000 .000 .000 .0 9.0 .0 .00 .0000 .0000 12:45 .000 .000 .000 .0 9.0 .0 .00 .0000 .0000 12:45 .000 .000 .000 .0 6.6 .1 .00 .0000 .0000 13:00 .000 .000 .000 .0 16.2 .0 .00 .0000 .0000 13:00 .000 .000 .000 .0 13.8 .0 .00 .0000 .0000 13:00 .000 .000 .000 .0 9.0 .1 .00 .0000 .0000 13:15 .000 .000 .000 .0 11.4 .0 .00 .0000 .0000 13:15 .000 .000 .000 .0 9.0 .0 .00 .0000 .0000 13:15 .000 .000 .000 .0 6.6 .0 .00 .0000 .0000 13:30 .000 .000 .000 .0 9.2 .0 .00 .0000 .0000 13:30 .000 .000 .000 .0 6.8 .0 .00 .0000 .0000 Unit -- Disk arm identifier IOP Name/ -- Input/Output processor resource name and (Model) model number of the attached device ASP Rsc Name -- ASP resource name to which the disk unit was allocated at collection time ASP ID -- Auxiliary storage pool number Itv End -- Interval end time (hour and minute) I/O /Sec -- Average number of I/O operations per second Reads Per Second -- Average number of reads per second Writes Per Sec -- Average number of writes per second K Per I/O -- Average number of kilobytes (1024) per I/O operation Dsk CPU Util -- Percentage of Disk CPU Utilization Util -- Average percent of time disk was used (busy) Queue Length -- Average length of waiting queue Average Service Time -- Average disk service time per I/O operation Average Wait Time -- Average disk wait time per I/O operation + Multipath disk unit.