HP OpenVMS Systems Documentation

The SCS class record contains data describing SCS (System Communications Services) activity for all SCS connections in the system, on a per-node basis. The SCS class record has a record type of 15; its size depends on the number of nodes being monitored. The size, in bytes, is calculated by adding the size of the class header, the class prefix, and the data blocks contained in the record. This is shown in the following formula:

13 + 8 + (56 * the value of MNR_CMP$L_ELTCT)

Figure H-22 illustrates the format of the SCS class record.

Figure H-22 SCS Class Record Format

The following table describes the fields in the data block for the SCS class record.

The STATES class record contains data describing the number of processes in each of the scheduler states. The STATES class record has a record type of 1 and a size of 69 bytes.

Figure H-23 illustrates the format of the STATES class record.

Figure H-23 STATES Class Record Format

The following table describes the fields in the data block for the STATES class record.

The SYSTEM class record contains data describing the overall operation of the three major system components (CPU, memory, I/O). The SYSTEM class record has a record type of 17 and a size of 49 bytes. Note that when the SYSTEM class is recorded, the PROCESSES, STATES, and MODES classes are also recorded, even if not explicitly requested.

Figure H-24 illustrates the format of the SYSTEM class record.

Figure H-24 SYSTEM Class Record Format

The following table describes the fields in the data block for the SYSTEM class record.

The TIMER class record contains data that is useful to the OpenVMS executive when monitoring timer queue entries (TQEs). The TIMER class record has a record type of 26 and a size of 29 bytes.

Figure H-25 illustrates the format of the TIMER class record.

Figure H-25 TIMER Class Record Format

The following table describes the contents of each of the TIMER class record fields.

The TRANSACTION class record contains data describing the operations of the DECdtm transaction manager. The TRANSACTION class has a record type of 22 and a size of 69 bytes. Figure H-26 illustrates the format of the TRANSACTION class record.

Figure H-26 TRANSACTION Class Record Format

The following table describes the contents of each of the TRANSACTION class record fields.

H.4.2.20 VBS Class Record (VAX Only)

Figure H-27 illustrates the format of a VBS class record.

Figure H-27 VBS Class Record Format (VAX Only)

The following table describes the fields in the data block for the VBS class record.

H.4.2.21 VECTOR Class Record

13 + 8 + (5 * MNR_SYI$B_VPCPUS)

Figure H-28 illustrates the format of the VECTOR class record.

Figure H-28 VECTOR Class Record Format

The following table describes the contents of each of the VECTOR class record fields.

To support the VECTOR class, MONITOR uses the items MNR_SYI$B_VPCPUS and MNR_SYI$L_VPCONF in the system information record. See the table in Section H.3.2 for details on these items.

SHOW CLUSTER provides a predefined keypad that you can use to enter selected commands. You can add, remove, or reposition windows, scroll their contents, or change the interval at which the display is updated. You can also customize the keypad by redefining the default functions of individual keys.

I.1 Using the Keypad

By default, the numeric keypad is defined as shown in Figure I-1.

Figure I-1 SHOW CLUSTER Default Keypad

Shading over a keypad command indicates that you must press the GOLD key and then the keypad key.

The following table describes each keypad command you can use with the Show Cluster utility. In this table, KPn refers to the keypad key labeled with the number n. For example, KP2 refers to the keypad key labeled with the number 2. All commands shown on the keypad are also discussed in the Command Section of Chapter 19.

Use the DEFINE/KEY command to change the definition of a key. See the DEFINE/KEY command in the Command Section of Chapter 19 for more information.

I.3 Redefining the Arrow Keys

By default, the SHOW CLUSTER arrow keys are set to the EDIT function. This means that you can perform command line editing at the command prompt that is similar to DCL line-mode editing. For example, the left arrow key moves the cursor to the left, or the up arrow key recalls the previous command. See the OpenVMS User's Manual for information about DCL line-mode editing.

The SET FUNCTION keys, shown in the second row of the keypad, redefine the arrow keys to perform a specified function. You can reset the arrow keys from EDIT to PAN, SCROLL, or MOVE with the SET FUNCTION command. For example, if you press the SET FUNCTION SCROLL key, the up, down, right, and left arrow keys are redefined as SCROLL UP 1, SCROLL DOWN 1, SCROLL RIGHT 1, and SCROLL LEFT 1, respectively. (See the Command Section of Chapter 19 for information about specific commands.)