Typical display (from an actual session): %TSTDVC-W-COLLSIZ, ratio of collection size to seek range is relatively small Started testing device DKA0 (label AXPVMSSYS) at 25-JAN-1997 23:51:00.55 TestDev 2.2 on EOLE completed testing at 25-JAN-1997 23:51:18.23 Device Information Type: DKX00 (serial 0) Host: EOLE Capacity: 2050860 blocks (1049 megabytes) Test Conditions Coverage: random Threading: 2 streams IO size: 4 blocks Seek range: 2043423 blocks (of 2050860 specified maximum) Operations: 1000 reads (of 1000 specified : 0 dropped) Performance Information Elapsed time: 00:00:17.68 Throughput: 115787 byte/sec IO rate: 56.5 IO/sec IO duration: 35.3 msec (average) IO spread: 6.7 msec (standard deviation) IO Time Distribution _____ msec _____ Count 15.6 <--> 18.1 2 (0.2%) 18.1 <--> 20.7 13 (1.3%) 20.7 <--> 23.2 13 (1.3%) 23.2 <--> 25.8 48 (4.8%) 25.8 <--> 28.3 94 (9.4%) 28.3 <--> 30.8 87 (8.7%) 30.8 <--> 33.4 151 (15.1%) 33.4 <--> 35.9 107 (10.7%) 35.9 <--> 38.5 165 (16.5%) 38.5 <--> 41.0 129 (12.9%) 41.0 <--> 43.5 75 (7.5%) 43.5 <--> 46.1 65 (6.5%) 46.1 <--> 48.6 24 (2.4%) 48.6 <--> 51.2 20 (2.0%) 51.2 <--> 53.7 7 (0.7%)