|
HP OpenVMS Systems Documentation |
|
HP OpenVMS DCL Dictionary
SHOW WORKING_SET
FormatSHOW WORKING_SET ParametersNone. Qualifier
|
| #1 |
|---|
$ SHOW WORKING_SET
Working Set (pagelets) /Limit= 2000 /Quota= 4000 /Extent= 6000
Adjustment enabled Authorized Quota= 4000 Authorized Extent= 6000
Working Set (8Kb pages) /Limit= 125 /Quota= 250 /Extent= 375
Authorized Quota= 250 Authorized Extent= 375
|
This example shows the SHOW WORKING_SET command on Alpha. The process has a working set limit of 2000 pagelets (125 pages) and a quota of 4000 pagelets (250 pages), and the current quota is equal to the authorized limit (4000 pagelets; 250 pages). It also shows that the current process has a working set extent of 6000 pagelets (375 pages) and that the current extent is equal to the authorized limit (6000 pagelets; 375 pages). A pagelet is 512 bytes.
| #2 |
|---|
$ SHOW WORKING_SET
Working Set /Limit= 180 /Quota= 350 /Extent=1200
Adjustment enabled Authorized Quota= 350 Authorized Extent=1200
|
This example shows the SHOW WORKING_SET command on VAX. The process has a working set limit of 180 pages, a quota of 350 pages, and the quota is equal to the authorized limit (350 pages). It also shows that the current process has a working set extent of 1200 and that the current extent is equal to the authorized limit (1200). Each page on a VAX is 512 bytes.
Displays the current state of a VAXft system. For more information on the SHOW ZONE command, refer to the VAXft systems documentation.Applies only to a VAXft system.
SHOW ZONE [zone-id]
Invokes the Sort/Merge utility, which reorders the records in a file into a defined sequence and creates either a new file of the reordered records or an address file by which the reordered records can be accessed.For more information about the Sort/Merge utility, refer to the OpenVMS User's Manual or online help.
SORT input-filespec[,...] output-filespec
Creates a subprocess of the current process. Portions of the current process context are copied to the subprocess.The RESOURCE_WAIT state is required to spawn a process. Requires TMPMBX (temporary mailbox) or PRMMBX (permanent mailbox) privilege. The SPAWN command does not manage terminal characteristics. The SPAWN and ATTACH commands cannot be used if your terminal has an associated mailbox.
SPAWN [command-string]
command-string
Specifies a command string of less than 132 characters that is to be executed in the context of the created subprocess. When the command completes execution, the subprocess terminates and control returns to the parent process. If both a command string and the /INPUT qualifier are specified, the specified command string executes before additional commands are obtained from the /INPUT qualifier.
The SPAWN command creates a subprocess of your current process with the following attributes copied from the parent process:
- All global symbols except $RESTART, $SEVERITY, $STATUS
- All local symbols defined for the current command procedure level
- Key definitions
- The current keypad state
- The current prompt string
- All process logical names and logical name tables except those explicitly marked CONFINE or those created in executive or kernel mode
- Default disk and directory
- Current SET MESSAGE settings
- Current process privileges
- Control and verification states
Note that some attributes, such as the process's current command tables, are not copied.
When the subprocess is created, the process-permanent open files and any image or procedure context are not copied from the parent process. The subprocess is set to command level 0 (DCL level with the current prompt).
If you do not specify the /PROCESS qualifier, the name of this subprocess is composed of the same base name as the parent process and a unique number. For example, if the parent process name is SKONETSKI, the subprocess name can be SKONETSKI_1, SKONETSKI_2, and so on.
The LOGIN.COM file of the parent process is not executed for the subprocess because the context is copied separately, allowing quicker initialization of the subprocess. When the /WAIT qualifier is in effect, the parent process remains in hibernation until the subprocess terminates or returns control to the parent by way of the ATTACH command.
More than one process simultaneously attempts to use the same input or output stream in the following circumstances:
- When several processes share that stream and you terminate a subprocess to which you are not currently attached
- When you terminate a process that is not spawned from the process to which you are currently attached
You should use the LOGOUT command to terminate the subprocess and return to the parent process. You can also use the ATTACH command to transfer control of the terminal to another process in the subprocess tree, including the parent process. (The SHOW PROCESS/SUBPROCESSES command displays the processes in the subprocess tree and points to the current process.)
Note
Because a tree of subprocesses can be established using the SPAWN command, you must be careful when terminating any process in the tree. When a process is terminated, all subprocesses below that point in the tree are terminated automatically.Qualifiers used with the SPAWN command must directly follow the command verb. The command string parameter begins after the last qualifier and continues to the end of the command line.
/CARRIAGE_CONTROL
/NOCARRIAGE_CONTROL
Determines whether carriage-return and line-feed characters are prefixed to the subprocess's prompt string. By default, SPAWN copies the current setting of the parent process./CLI=cli-filespec
/NOCLI
Specifies the name of a command language interpreter (CLI) to be used by the subprocess. The default CLI is the same as the parent process (defined in SYSUAF). If you specify the /CLI qualifier, the attributes of the parent process are copied to the subprocess.The CLI you specify must be located in SYS$SYSTEM and have the file type .EXE.
/INPUT=filespec
Specifies an input file containing one or more DCL commands to be executed by the spawned subprocess. The file type defaults to .COM. The asterisk (*) and the percent sign (%) wildcard characters are not allowed in the file specification. Once processing of the input file is complete, the subprocess is terminated. If both a command string and the /INPUT qualifier are specified, the specified command string executes before additional commands are obtained from the /INPUT qualifier. If neither is specified, SYS$INPUT is assumed (in which case a SPAWN/NOWAIT command is aborted if Ctrl/Y is pressed to abort something running in your parent process).You cannot explicitly specify non-record-oriented, process-permanent files (NRO PPFs) with the /INPUT qualifier. The system displays an error message when it encounters such a file as the value for the /INPUT qualifier.
Note that when NRO PPFs are used as implicit input (that is, the /INPUT qualifier is not specified and SYS$INPUT is a NRO PPF), the SPAWN command can succeed, as shown in the following table:
Process Type SYS$INPUT Implicit Input Interactive NRO PPF SYS$COMMAND Noninteractive NRO PPF Null device Any Any other SYS$INPUT If SYS$INPUT is a terminal, it cannot have an associated terminal mailbox.
/KEYPAD (default)
/NOKEYPAD
Copies keypad key definitions and the current keypad state from the parent process. By default, if you have established key definitions or states with the DEFINE/KEY or the SET KEY command, these settings are copied to the subprocess. Use the /NOKEYPAD qualifier if you do not want the key settings to be copied./LOG (default)
/NOLOG
Displays the assigned subprocess name and any messages indicating transfer of control between processes./LOGICAL_NAMES (default)
/NOLOGICAL_NAMES
Copies process logical names and logical name tables to the subprocess. By default, all process logical names and logical name tables are copied to the subprocess except those explicitly marked CONFINE or created in executive or kernel mode./NOTIFY
/NONOTIFY (default)
Controls whether a message is broadcast to your terminal notifying you that your subprocess has completed or aborted. This qualifier should not be used unless you specify the /NOWAIT qualifier. The /NOTIFY qualifier cannot be specified when the SPAWN command is executed from within a noninteractive process.Note that messages broadcast as a result of using the /NOTIFY qualifier are considered to be DCL messages. Therefore, if SET BROADCAST=NODCL is in effect, all such notification messages are suppressed.
/OUTPUT=filespec
Specifies the output file to which the results of the SPAWN operation are written. The asterisk (*) and the percent sign (%) wildcard characters cannot be used in the file specification. (Do not specify SYS$COMMAND as a file specification for the /OUTPUT qualifier when using the /NOWAIT qualifier; both parent and subprocess output will be displayed simultaneously on your terminal.)
Caution
If you include a version number in the filespec argument of the /OUTPUT qualifier, and that version of the specified file already exists, the existing file is replaced with the new output.You cannot explicitly specify non-record-oriented, process-permanent files (NRO PPFs) with the /OUTPUT qualifier. The system displays an error message when it encounters such a file as the value for the /OUTPUT qualifier.
Note that when NRO PPFs are used as implicit output, the SPAWN command can succeed, as shown in the following table:
Process Type SYS$OUTPUT Implicit Output Any NRO PPF Mailbox transmitting records for parent to write to its current SYS$OUTPUT device Any Any other SYS$OUTPUT If you omit the /OUTPUT qualifier, output is written to the current SYS$OUTPUT device.
/PRIVILEGES={CURRENT|AUTHORIZED}
Determines whether the spawned process inherits the current process' current or authorized privileges as its authorized privileges. By default, the authorized privilege mask for the subprocess is taken from the current privileges of its creator. (This corresponds to /PRIVILEGES=CURRENT.) If the /PRIVILEGES=AUTHORIZED qualifier is specified, the subprocess' authorized privileges will be taken from the caller's authorized privileges./PROCESS=subprocess-name
Specifies the name of the subprocess to be created. If you omit the /PROCESS qualifier, a unique process name is assigned with the same base name as the parent process and a unique number.The default subprocess name format is username_n. If you specify a process name that already exists, an error message is displayed. If the /LOG qualifier has been specified, the assigned name of the subprocess is displayed.
Note
Beginning in OpenVMS Version 7.3-1 (Alpha only), the default constructed process name for subprocesses has changed. Instead of incrementally searching for the next unique number, a random number is chosen to append to the user name. Therefore, the first processes that are spawned from user SYSTEM might be SYSTEM_154, SYSTEM_42, SYSTEM_87, and so on.Prior to OpenVMS Version 7.3-1, if no process name was supplied, the system constructed a name by appending _n to the user name, where n was the next available non-duplicate integer for any process currently in the system. For example, the first spawned process from user SYSTEM would be called SYSTEM_1, the second, SYSTEM_2, and so on. The next available number was chosen as soon as a gap was found.
Some applications may rely on the previous method of assigning subprocess names. The DCL_CTLFLAGS system parameter allows you to configure the system as necessary. Refer to the HP OpenVMS System Management Utilities Reference Manual for more information.
/PROMPT[=string]
Specifies the prompt string for DCL to use in the subprocess. The default is the prompt of the parent process.The string can consist of more than one character. All valid ASCII characters can be used in the string. The string must be enclosed in quotation marks (" ") if it contains spaces, special characters, or lowercase characters. Otherwise, letters are automatically converted to uppercase, and leading and trailing spaces are removed.
If no string is specified, the dollar sign ($) DCL default prompt string is used for the subprocess.
/SYMBOLS (default)
/NOSYMBOLS
Determines whether global and local symbols (except $RESTART, $SEVERITY, and $STATUS) are passed to the subprocess. $RESTART, $SEVERITY, and $STATUS symbols are never passed to the subprocess./TABLE=command-table
Specifies the name of an alternate command table to be used by the subprocess./TRUSTED
/NOTRUSTED
Indicates that the SPAWN command input originates in a trusted command procedure. SPAWN commands are not allowed in CAPTIVE accounts. The /TRUSTED qualifier provides a way for properly written captive command procedures to perform SPAWN operations when the command input originates in the captive command procedure where it can be trusted. For more information about trusted command procedures, refer to the HP OpenVMS Guide to System Security./WAIT (default)
/NOWAIT
Requires that you wait for the subprocess to terminate before you enter another DCL command. The /NOWAIT qualifier allows you to enter new commands while the subprocess is running. (Use the /OUTPUT qualifier with the /NOWAIT qualifier to avoid displaying both parent and subprocess output on the terminal simultaneously.)Note that specifying the /NOWAIT qualifier causes both input and output to be shared with the parent process. If the input device is a terminal, control characters, such as Ctrl/T or Ctrl/Y, also affect all subprocesses sharing the input device. The Ctrl/Y control character, for example, interrupts all such subprocesses.
This problem may be avoided by specifying /INPUT=NL:.
$ RUN MYPROG
.
.
.
$ [Ctrl/Y]
$ SPAWN MAIL
%DCL-S-SPAWNED, process SKONETSKI_1 spawned
%DCL-S-ATTACHED, terminal now attached to process SKONETSKI_1
MAIL> READ
.
.
.
MAIL> EXIT
%DCL-S-RETURNED, control returned to process SKONETSKI
$ CONTINUE
|
The SPAWN command in this example allows you to enter the OpenVMS Mail utility (MAIL) without terminating the currently running program. After you exit from Mail, control is returned to the parent process.
Starts the specified secondary processor or processors (and any associated vector processors). The /CPU qualifier is required.Applies only to OpenVMS multiprocessing systems. Requires CMKRNL (change mode to kernel) privilege.
START/CPU [cpu-id[,...]]
cpu-id[,...]
Specifies a decimal value representing the identity of a processor in a OpenVMS multiprocessing system. On a VAX 6000 system or an Alpha 7000 system, the CPU ID is the backplane slot number of the processor. If you do not specify a CPU ID and do not include the /ALL qualifier, the START/CPU command selects a single available processor to join the multiprocessing system.
The START/CPU command starts a secondary processor in a OpenVMS multiprocessing system.You can issue a START/CPU command only for processors in the STOPPED or TIMOUT state, as represented by the SHOW CPU command; otherwise, the START/CPU command has no effect.
/ALL
Selects all remaining processors in the system's available set to join the multiprocessing system./DEFAULT_CAPABILITIES
Eliminates all previous capability (user and system) modifications for the specified CPU and reinitializes them with the values in the global initialization variable SCH$GL_DEFAULT_CPU_CAP.Normally, user capabilities survive CPU shutdowns and restarts (not reboots), making the downtime as transparent to the user as possible. The CPU user capability bits are only initialized from SCH$GL_DEFAULT_CPU_CAP at the first boot of the CPU. (The system capability bits, however, are reinitialized to their defaults taken from SCH$GL_DEFAULT_CPU_CAP.)
However, there may be times when the CPU needs to be returned to a known, consistent state. The /DEFAULT_CAPABILITIES qualifier mimics the behavior of the initial bootstrap of the CPU.
/POWER[=ON] (Alpha only)
Powers on the CPU prior to bringing the CPU into the active set.Supported only on AlphaServer GS series systems.
| #1 |
|---|
$ START/CPU
|
The START/CPU command in this example selects a single inactive processor from the set of those processors that are currently available but inactive. When it completes its initialization, the selected processor becomes part of the system's active set and is capable of scheduling and executing processes.
| #2 |
|---|
$ START/CPU 4,7
|
The START/CPU command in this example selects the processors with CPU IDs 4 and 7, if they are currently available and inactive. When they complete initialization, these processors become part of the system's active set and are capable of scheduling and executing processes.
| #3 |
|---|
$ START/CPU/ALL
|
The START/CPU/ALL command in this example selects all remaining inactive and available processors. When they complete initialization, these processors become part of the system's active set and are capable of scheduling and executing processes.
Starts or restarts the specified network service on the local node. The /NETWORK qualifier is required.
START/NETWORK network-service
network-service
Specifies the name of the network service to be started or restarted.
The START/NETWORK command causes a network service to begin executing on the local node.Use the STOP/NETWORK command to pause the network.
$ START/NETWORK DECnet
|
This command starts the DECnet network service.
Starts or restarts the specified queue after it has been initialized. You also can use this command to change the options of the specified queue. The /QUEUE qualifier is required.Requires manage (M) access to the queue.
START/QUEUE queue-name[:]
queue-name[:]
Specifies the name of the queue to be started or restarted.
The START/QUEUE command restarts a queue that has been stopped or paused. You must create the queue with the INITIALIZE/QUEUE command before you can use the START/QUEUE command. To create and start the queue at the same time, use the INITIALIZE/QUEUE/START command.If the specified queue is an autostart queue, the START/QUEUE command activates the queue for autostart. The queue begins processing jobs when autostart is enabled with the ENABLE AUTOSTART/QUEUES command for any node on which the queue can run.
You can specify with the START/QUEUE command most qualifiers that can be used with the INITIALIZE/QUEUE command. The defaults for the START/QUEUE qualifiers depend on the qualifiers specified when the queue was initialized. For example, the default for /JOB_LIMIT with INITIALIZE/QUEUE is 1. However, if the queue you are altering was initialized with a job limit of 3, and if you do not specify the /JOB_LIMIT qualifier with the START/QUEUE command, the job limit remains at 3 for that queue.
Values or options specified with qualifiers on the START/QUEUE command override the values or options of those same qualifiers that were specified when the queue was initialized.
If the specified queue is running when you enter the START/QUEUE command, the system returns an error message. To change the options of a running queue, use the SET QUEUE command. To change queue options that cannot be altered with the SET QUEUE command, use the following procedure:
- Stop the queue with the STOP/QUEUE/NEXT command.
- Restart the queue with the START/QUEUE or INITIALIZE/QUEUE/START command, specifying the appropriate qualifiers for the options you desire.
The /TOP_OF_FILE, /BACKWARD, /FORWARD, /SEARCH, /ALIGN, and /NEXT qualifiers are effective only when restarting an output execution queue from a paused state. They do not apply to queues that are stopped or to batch queues. When you specify more than one of the first five of these qualifiers, the print symbiont processes them in the following order:
- /TOP_OF_FILE
- /BACKWARD
- /FORWARD
- /SEARCH
- /ALIGN
/ALIGN[=(option[,...])]
Prints alignment pages to aid in aligning printer forms. Use this qualifier only when restarting an output execution queue from a paused state.After the alignment is complete, the queue enters a paused state until you restart it by reentering the START/QUEUE command. Printing resumes from the point where alignment data started; that is, the task is backspaced over the pages printed for alignment.
Possible options are as follows:
MASK Specifies that input data is masked by replacing alphabetic characters with x's and numbers with 9s; nonalphanumeric characters are not masked. Mask characters allow you to prevent the printing of sensitive information. If you omit the MASK option, data is printed unaltered. n Specifies the number of alignment pages to print. The value of n can be from 1 to 20. By default, one page of alignment data is printed. /AUTOSTART_ON=(node::[device][,...])
Designates the queue as an autostart execution queue and specifies the node, or node and device, on which the queue can be located. Both node and device must be specified for output queues. For batch queues, only node is applicable.In an OpenVMS Cluster, you can specify more than one node (or node and device) on which a queue can run, in the preferred order in which nodes should claim the queue. This allows the queue to fail over to another node if the node on which the queue is running leaves the cluster.
For autostart queues, the START/QUEUE command activates the queue for autostart. The queue will begin processing jobs when the ENABLE AUTOSTART/QUEUES command is entered for a node on which the queue can run.
This qualifier cannot be used with the /ON or /GENERIC qualifier; however, you can specify the /AUTOSTART_ON qualifier for a queue previously created or started with the /ON qualifier. Doing so overrides the /ON option and makes the queue an autostart queue.
For more information about autostart queues, refer to the chapter about managing queues in the HP OpenVMS System Manager's Manual.
/BACKWARD=n
Restarts a print queue n pages before the current page; n defaults to 1. If you omit the page value, printing resumes at the top of the current page. Use this qualifier only when restarting an output execution queue from a paused state.
Previous Next Contents Index