These views summarize global I/O consumers to display amount of I/O, grouped by file. By default, rows are sorted by descending total I/O (bytes read and written).
views have these columns:
The file path name.
The total number of read events for the file.
The total number of bytes read from the file.
The average number of bytes per read from the file.
The total number of write events for the file.
The total number of bytes written to the file.
The average number of bytes per write to the file.
The total number of bytes read and written for the file.
The percentage of total bytes of I/O that were writes.