The I/O Bandwidths Window

To open the I/O bandwidths window, select the menu item Window > Show I/O Bandwidths or press the key combination ⌘ + 3.

The window indicates the current bandwidths for the sum of all disk-like devices and network connections. They represent the typical input/output elements of a computer in classic data processing.

Indicated are:

• Disk bandwidth read: the transfer rate of data read by all disk-like devices
• Disk bandwidth write: the transfer rate of data written to all disk-like devices
• Network bandwidth read: the transfer rate of data received from all network ports
• Network bandwidth write: the transfer rate of data sent to all network ports

The program always uses the unit megabytes per second with three significant digits after the decimal point. Data transfer rates below 1 kilobyte per second are therefore not shown. Units according to the ISO 80000 standard are used, so 1 kB = 1,000 bytes.