4.3.5 CPU Ut
ilization Bar

The CPU utilization bar shows one line per emulated CPU as specified in the configuration file. On the left
there is the CPU number, on the right there is a utilization bar that shows the current CPU utilization. If a
CPU is in the stopped state then the utilization bar displays “CPnn STOPPED”.

Figure 11: Device and Status Panel CPU Utilization Bar

If capping is active (see the CAPPING system parameter or console command) and the CPU is currently
capped then the utilization bar turns its color from white to red, as long as the CPU is in the capped state.

The CPU bar is refreshed at a fixed interval of 1000 milliseconds (once per second), independent of the
PANRATE setting.

4.3.6 Peripherals Area

The peripherals area contains a list of all the devices of the current configuration. It is mostly the same as
the device definition part of the configuration file. In the peripherals area however the devices are sorted
by the device address and all symbols that may have been used in the configuration file are resolved. In
addition the current number of IOs for each device is shown at the end of the assignment data column.

The peripherals area displays following information for each device:


The “U” column contains a one letter shortcut for the device address (A-Z, begin-
ning with the device with the smallest device address) for the first 26 devices of the
peripherals list.

This alias letter can be used as shortcut when initiating an IPL from the device and
status panel or when sending an I/O interrupt to a device. If the intended device is
not within the first 26 devices of this list, then the shortcut can’t be used and the IPL
or the I/O interrupt has to be performed with a console command from the console
panel. A green device letter instead of a grey one indicates that the device is on-


The “addr” column contains the device address as specified in the configuration file.
Independent of the sequence in the configuration file the devices are sorted in as-
cending order in the peripherals list. A lighted device address indicates that the de-
vice is busy.


This is the device type as defined in the configuration file. A green device type
instead of a grey one indicates that the attached file is open to the device.


This describes the device class. Possible device classes are:

CON (Console devices) CTCA (Channel-to-channel adapter)
DASD (Disk devices) DSP (Terminals) LINE (Communication lines) PCH (Card punch devices) PRT (Printer devices) QETH (QETH devices) RDR (Card reader) TAPE (Tape drives)


This is the assignment made in the configuration file for the device. If any symbols
have been used in the device definition then the assignment column displays the
resolved value. At the end of each device assignment line the current number of
I/Os to this device are shown in brackets.

Figure 12: Device and Status Panel Peripherals Area

In the peripherals area the following controls are available through pressing the highlighted letter:

U Send an I/O interrupt to a device. N Enter a new name for the device file assignment.
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