#### 28.4.3.13 The io\_global\_by\_wait\_by\_bytes and x$io\_global\_by\_wait\_by\_bytes Views

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 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`](sys-io-global-by-wait-by-bytes.html) and [`x$io_global_by_wait_by_bytes`](sys-io-global-by-wait-by-bytes.html) 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.

