26.4.3.13 The io_global_by_wait_by_bytes and x$io_global_by_wait_by_bytes Views

These views summarize global I/O consumers to display amount of I/O and time waiting for I/O, grouped by event. By default, rows are sorted by descending total I/O (bytes read and written).

The io_global_by_wait_by_bytes and x$io_global_by_wait_by_bytes views have these columns:

event_name

The I/O event name, with the wait/io/file/ prefix stripped.
total

The total number of occurrences of the I/O event.
total_latency

The total wait time of timed occurrences of the I/O event.
min_latency

The minimum single wait time of timed occurrences of the I/O event.
avg_latency

The average wait time per timed occurrence of the I/O event.
max_latency

The maximum single wait time of timed occurrences of the I/O event.
count_read

The number of read requests for the I/O event.
total_read

The number of bytes read for the I/O event.
avg_read

The average number of bytes per read for the I/O event.
count_write

The number of write requests for the I/O event.
total_written

The number of bytes written for the I/O event.
avg_written

The average number of bytes per write for the I/O event.
total_requested

The total number of bytes read and written for the I/O event.