Q: Since when Disks statistics in `top` command are counted? I've got these disk statistics shown in top command:
$ top | head | tail -n1
Disks: 1095425909/52T read, 1016012571/52T written.

It's quiet high number for only 37 day uptime.
Are these numbers are counted since the boot time, or another period? I can't find it in the documentation.

A: The top command tries to report statistics since boot time when it only reports one set; if it's set to report on a loop basis (e.g. with the -d option), the first report is since boot, the second and thereafter are for the most recent loop period only.
