Кто-нибудь верит полю svctm замечательной утилиты iostat в Linux ?
man:
svctm
The average service time (in milliseconds) for I/O requests that were issued to the device. Warning! Do not trust this field any more. This field will be removed in a future sysstat version.
code text
avg-cpu: %user %nice %system %iowait %steal %idle
10.47 0.00 1.25 24.69 0.00 63.59
Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util
sda 0.00 0.00 2.00 0.00 2.00 0.00 1.00 0.00 1.50 1.50 0.30
sdb 0.00 0.00 412.00 40.00 95728.00 379.00 212.63 1.23 2.73 2.18 98.50
sdc 0.00 0.00 1.00 2.00 32.00 640.00 224.00 0.00 0.33 0.33 0.10
dm-2 0.00 0.00 1.00 2.00 32.00 640.00 224.00 0.00 0.33 0.33 0.10
dm-3 0.00 0.00 411.00 40.00 95712.00 379.00 213.06 1.23 2.74 2.19 98.60
dm-9 0.00 0.00 2.00 0.00 2.00 0.00 1.00 0.00 1.50 1.50 0.30