As páginas de trabalho foram atualizadas recentemente em versões mais recentes:
The extended iostat device display, with the -x flag specified,
shows the following statistics:
r/s read operations per second
w/s write operations per second
kr/s kilobytes read per second
kw/s kilobytes write per second
qlen transactions queue length
ms/r average duration of read transactions, in milliseconds
ms/w average duration of write transactions, in milliseconds
ms/o average duration of all other transactions, in milliseconds
ms/t average duration of all transactions, in milliseconds
%b % of time the device had one or more outstanding
transactions