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If you enter the /OUTPUT qualifier with a partial file specification (for example, specifying only a directory), SHOW is the default file name and .LIS the default file type. If you enter a file specification, it cannot include asterisk (*) and the percent sign (%) wildcard characters.
If you enter the /NOOUTPUT qualifier, output is suppressed.
You can use the following keywords with the /PAGE qualifier:
| CLEAR_SCREEN | Clears the screen before each page is displayed. |
| SCROLL | Displays information one line at a time. |
| SAVE[= n] | Enables screen navigation of information, where n is the number of pages to store. |
The /PAGE=SAVE qualifier allows you to navigate through screens of information. The /PAGE=SAVE qualifier stores up to 5 screens of up to 255 columns of information. When you use the /PAGE=SAVE qualifier, you can use the following keys to navigate through the information:
| Key Sequence | Description |
|---|---|
| Up arrow (<uparrow symbol>), Ctrl/B | Scroll up one line. |
| Down arrow (<downarrow symbol>) | Scroll down one line. |
| Left arrow ( <-) | Scroll left one column. |
| Right arrow (->) | Scroll right one column. |
| Find (E1) | Specify a string to find when the information is displayed. |
| Insert Here (E2) | Scroll right one half screen. |
| Remove (E3) | Scroll left one half screen. |
| Select (E4) | Toggle 80/132 column mode. |
| Prev Screen (E5) | Get the previous page of information. |
| Next Screen (E6), Return, Enter, Space | Get the next page of information. |
| F10, Ctrl/Z | Exit. (Some utilities define these differently.) |
| Help (F15) | Display utility help text. |
| Do (F16) | Toggle the display to oldest/newest page. |
| Ctrl/W | Refresh the display. |
The /PAGE qualifier is not compatible with the /OUTPUT qualifier.
You can also dynamically change the search string by pressing the Find key (E1) while the information is being displayed. Quotation marks are not required for a dynamic search.
The /NOWRAP qualifier extends lines beyond the width of the screen and can be seen when you use the scrolling (left and right) features provided by the /PAGE=SAVE qualifier.
#1
$ SHOW MEMORY
System Memory Resources on 4-MAY-1994 10:14:45.68
Physical Memory Usage (pages): Total Free In Use Modified
Main Memory (24.00Mb) 49152 16390 31056 1706
Virtual I/O Cache Usage (pages): Total Free In Use Maximum
9232 0 9232 18055
Slot Usage (slots): Total Free Resident Swapped
Process Entry Slots 26 3 21 2
Balance Set Slots 23 1 21 1
Dynamic Memory Usage (bytes): Total Free In Use Largest
Nonpaged Dynamic Memory 462336 8304 454032 4608
Paged Dynamic Memory 348672 117120 231552 114976
Paging File Usage (pages): Free Reservable Total
DISK$DKA300:[SYS0.SYSEXE]PAGEFILE.SYS 46514 -3239 50000
Of the physical pages in use, 5162 pages are permanently allocated
to VMS.
#2This example shows reservable pages. Here, the reservable pages are a negative value which indicates that you may want to consider adding to the fixed amount of pagefile space available.
$ SHOW MEMORY/CACHE/FULL
System Memory Resources on 10-OCT-1994 18:36:12.79
Virtual I/O Cache
Total Size (pages) (1) 2422 Read IO Count (6) 9577
Free Pages (2) 18 Read Hit Count (7) 5651
Pages in Use (3) 2404 Read Hit Rate (8) 59%
Maximum Size (SPTEs) (4) 11432 Write IO Count (9) 2743
Files Retained (5) 99 IO Bypassing the Cache (10) 88
#3
Note
This example shows the output for the SHOW MEMORY/CACHE/FULL command on a VAX system. The SHOW MEMORY/CACHE/FULL command will display slightly different field on an Alpha system.
Virtual I/O Cache Usage (in Pages)
Shows the use of the Virtual I/O Cache facility on VAX.
(1) Total Size Displays the total number of system memory pages that the Virtual I/O cache currently controls. (2) Free Pages Displays the number of pages controlled by the Virtual I/O cache that do not contain cache data. (3) Pages in Use Displays the number of pages controlled by the Virtual I/O cache that contain valid cached data. (4) Maximum Size Shows the maximum size that the cache could ever grow to. (5) Files Retained Displays the number of files that are closed but the file system control information is being retained because they have valid data residing in the cache. (6) Read I/O Count Displays the total number of read I/Os that have been seen by the Virtual I/O cache since the last system. (7) Read Hit Count Displays the total number of read I/Os that did not do a physical I/O because the data for them was found in the cache since the last system BOOT. (8) Read Hit Rate Displays the read hit count and read I/O count ratio. (9) Write I/O Count Shows the total number of write I/Os that have been seen by the cache since the last system BOOT. (10) I/O Bypassing Displays the count of I/Os that for some reason did not attempt to satisfy the request/update by the cache.
$ SHOW MEMORY/PHYSICAL_PAGES
System Memory Resources on 14-DEC-1994 16:11:30.76
Physical Memory Usage (pages): Total (1) Free (2) In Use (3) Modified (4)
Main Memory (32.00Mb) 65536 44233 20955 308
Of the physical pages in use, 10970 pages are permanently allocated
to VMS.
#4
Physical Memory Usage
Shows the use of physical memory.
(1) Total Displays the number of physical memory pages available for general system use. Multiport memory pages (existing on some VAX) used for shared memory global sections, mailboxes, and common event blocks are not included in this number. (2) Free Displays the number of pages on the free page list. (3) In Use Displays the number of pages currently being used. This number is calculated by adding the number of pages on the free, modified, and bad lists and then subtracting that sum from the total number of available pages. (4) Modified Displays the number of pages on the modified page list. Bad Page List
Shows the contents of the bad page list.
Note
This display is written only when there are pages on the bad page list.
Total Displays the number of pages on the bad page list. Dynamic Displays the number of memory errors detected after the system was booted. I/O Errors Displays the number of errors detected during page fault handling. Static Displays the number of memory errors detected during boot-time scan. By default, either single-bit or double-bit errors cause the pages to be removed during the boot-time scan.
Pages Allocated to OpenVMS
Any SHOW MEMORY display that includes the physical memory display concludes with the number of pages permanently allocated to the OpenVMS system. These pages include nonpaged executive code and data, the PFN database, nonpaged dynamic memory, the interrupt stack, and the system page table.
$ SHOW MEMORY/SLOTS
System Memory Resources on 14-DEC-1994 16:11:35.31
Slot Usage (slots): Total (1) Free (2) Resident (3) Swapped (4)
Process Entry Slots 75 28 46 1
Balance Set Slots 70 26 44 0
#5
Slot Usage (slots)
Displays the use of process entry slots and balance set slots.
(1) Total Displays the number of process entry slots (the value of the system parameter MAXPROCESSCNT) and balance set slots (the value of the system parameter BALSETCNT) permanently allocated when the system was bootstrapped. (2) Free Displays the number of slots currently available. (3) Resident Displays the number of slots currently used by memory-resident processes. The number of balance set slots in use can never be any larger than the number of process entry slots in use because the SWAPPER and NULL processes have process entry slots but do not require balance set slots. (4) Swapped Displays the number of slots used by outswapped processes. For process entry slots, this number includes all processes that have been partially outswapped. For balance set slots, this number includes those processes that have had their process bodies outswapped but have process headers that are still resident.
$ SHOW MEMORY/POOL
System Memory Resources on 14-DEC-1994 16:11:39.97
Dynamic Memory Usage (bytes): Total (1) Free (2) In Use (3) Largest (4)
Nonpaged Dynamic Memory 161792 3488 158304 1936
Paged Dynamic Memory 65536 29312 36224 29296
#6
Dynamic Memory Usage (in bytes)
Shows the use of the nonpaged and paged pool areas that allocate variably sized blocks.
(1) Total Displays the total number of bytes set aside for each area. (2) Free Displays the total amount of free space in each dynamic memory area. (3) In Use Displays the amount of space currently allocated from each area. This number is simply the total size minus the number of free bytes. (4) Largest Displays the size of the largest contiguous block in each area. For the paged pool, this number represents the largest block that can be allocated. For the nonpaged pool, an allocation request larger than this number will cause the nonpaged pool to grow (if other constraints allow growth).
$ SHOW MEMORY/FILES
System Memory Resources on 14-DEC-1994 16:11:45.83
Paging File Usage (blocks): Free (2) Reservable (3) Total (4)
DISK$VMS02APR1:[SYS2.SYSEXE]SWAPFILE.SYS (1) 256 256 4096
DISK$VMS02APR1:[SYS2.SYSEXE]PAGEFILE.SYS 7613 6912 8192
#7
Paging File Usage (in pages)
Shows the usage of paging and swapping files.
(1) Name Displays the complete file specification of each swapping or paging file.
The names of the primary paging file, the primary swapping file (if this file exists), and the files installed by the bootstrap operation are always displayed. The names of any secondary paging or swapping files installed by the System Generation utility (SYSGEN) are displayed only if the process using the SHOW MEMORY command has read (R) access to those files. If the process cannot read the file, the name is suppressed but the usage statistics are displayed.(2) Free Displays the number of free blocks in each paging and swapping file currently installed. Free blocks are blocks that may be physically allocated in the file. (3) Reservable Displays the number of reservable blocks in each paging and swapping file currently installed. Reservable blocks are blocks that may be logically claimed by a process for future physical allocation. A negative value indicates that the file may be overcommitted.
Note that a negative value is not an immediate concern but indicates that the file may become overcommitted if physical memory becomes scarce.(4) Total Displays the total size of each paging and swapping file. When the /FULL qualifier is included on the SHOW MEMORY command for displays of pool areas or paging file usage, additional information is included in the pool or files displays.
$ SHOW MEMORY/POOL/FULL
System Memory Resources on 31-DEC-1994 16:11:49.74
Nonpaged Dynamic Memory (Lists + Variable)
Current Size (bytes) (1) 8144384 Current Total Size (pages)(1) 15907
Initial Size (NPAGEDYN)(2) 8144384 Initial Size (pages) (2) 15907
Maximum Size (NPAGEVIR)(3) 36196352 Maximum Size (pages) (3) 70696
Free Space (bytes) (4) 2849856 Space in Use (bytes) (5)5294528
Size of Largest Block (6) 971904 Size of Smallest Block (7) 64
Number of Free Blocks (8) 6756 Free Blocks LEQU 64 Bytes (9) 274
Paged Dynamic Memory
Current Size (PAGEDYN) (1) 4324352 Current Total Size (pages)(1) 8446
Free Space (bytes) (4) 3378664 Space in Use (bytes) (5) 951488
Size of Largest Block (6) 3357664 Size of Smallest Block (7) 16
Number of Free Blocks (8) 216 Free Blocks LEQU 64 Bytes (9) 178
#8
Dynamic Memory
Shows the use of dynamic memory areas consisting of variably sized blocks.
(1) Current Size Displays the current size (in 512-byte pagelets on Alpha and in bytes and pages on VAX) of each dynamic memory area. (2) Initial Size Displays the initial size of nonpaged dynamic memory and the name of the system parameter (NPAGEDYN) that controls this size. (3) Maximum Size Displays the maximum size to which nonpaged dynamic memory can grow and the name of the system parameter (NPAGEVIR) that controls this size. (4) Free Space Displays the amount of free space in each dynamic memory area. (5) Space in Use Displays the amount of space currently allocated from each area. (6) Largest Block Displays the size of the largest contiguous area in each pool area. (7) Smallest Block Displays the size of the smallest hole (free block) in each pool area. (8) Free Blocks Displays the total number of free blocks in each pool area. The size of this number is a measure of pool fragmentation. (9) Blocks LEQU 64 Displays the number of free blocks that are 64 bytes long or shorter. This number is another measure of pool fragmentation because while allocation of these small blocks is unlikely, they contribute to the allocation time whenever an allocation request is made.
$ SHOW MEMORY/FILES/FULL
System Memory Resources on 14-APR-1994 16:11:55.49
DISK$VMS02APR1:[SYS0.SYSEXE]SWAPFILE.SYS (1)
Free Blocks (2) 256 Reservable Blocks (3) 256
Total Size (blocks) (4) 4096 Paging File Number (5) 1
Swapping Usage (processes) (6) 0 Paging Usage (processes) (7) 0
This file is used exclusively for swapping. (8)
DISK$VMS02APR1:[SYS0.SYSEXE]PAGEFILE.SYS (1)
Free Blocks (2) 7611 Reservable Blocks (3) 6912
Total Size (blocks) (4) 8192 Paging File Number (5) 5
Swapping Usage (processes) (6) 0 Paging Usage (processes) (7) 0
This file can be used for either paging or swapping. (8)
Paging File Usage
Shows the usage of paging and swapping files.
(1) File Name Displays the complete file specification of each paging or swapping file, subject to the privilege restriction mentioned in the description of the normal display. (2) Free Blocks Displays the number of free blocks in each paging and swapping file currently installed. Free blocks are blocks that may be physically allocated in the file. (3) Reservable Blocks Displays the number of reservable blocks in each paging and swapping file currently installed. Reservable blocks are blocks that may be logically claimed by a process for future physical allocation. A negative value indicates that the file may be overcommitted.
Note that a negative value is not an immediate concern but indicates that the file may become overcommitted if physical memory becomes scarce.(4) Total Size Displays the size of each paging and swapping file. (5) File Number Displays the internal paging file index assigned to each paging or swapping file when it is installed. (6) Swapping Usage Displays the number of processes currently assigned space in this file for the purpose of swapping. Swapping file assignment can change over the life of a process. (7) Paging Usage Displays the number of processes currently paging to this file. Paging file assignment is made when a process is created and a process continues to page to that file.
Note that the last two pieces of information are limited by the GROUP and WORLD privileges. That is, a process with neither privilege can only determine the paging and swapping file assignments of itself and its subprocesses. A process with GROUP privilege can obtain this information about all processes that have the same group number. Only a process with WORLD privilege can obtain accurate paging and swapping file information for the entire system.(8) File Usage Displays a line of text that describes whether the file is used exclusively for swapping or is used for both paging and swapping.
Displays information about network services registered on a node.
SHOW NETWORK [network-service]
network-service
Specifies a network service for which you want to display information. If you do not specify a service, the SHOW NETWORK command displays information about all services that are currently registered on the local node.
The SHOW NETWORK command displays information about network services available on an OpenVMS system.
/FULL
Displays all the information for the specified network service./OLD
If you are running DECnet Phase IV, retains the behavior of the SHOW NETWORK command prior to OpenVMS Version 7.0. If the local node is a routing node, the /OLD qualifier provides routing information./OUTPUT[=filespec]
/NOOUTPUT
Controls where the output of the command is sent. By default, the output of the SHOW NETWORK command is sent to the current SYS$OUTPUT device (usually your terminal).The asterisk (*) and the percent sign (%) wildcard characters are not allowed in the file specification.
If you enter the /NOOUTPUT qualifier, output is suppressed.
#1
$ SHOW NETWORK Product: DECnet Node: GALAXY Addresss(es): 19.129
#2This command displays all the network services currently registered on the local node, and the name and address of that node.
$ SHOW NETWORK DECnet Product: DECnet Node: GALAXY Addresss(es): 19.129
#3This command identifies the network services, in this case DECnet, registered on the local node.
$ SHOW NETWORK/FULL
The following network service is available at this time:
Product: DECNET Manufacturer: Digital Equipment Corporation
Node: ZOOMAN Address(es): 19.215
Network Type: DNA IV Interface(s): net 0
Node Volatile Characteristics as of 21-NOV-1995 10:36:09
Executor node = 19.215 (ZOOMAN)
Identification = DECnet for OpenVMS Alpha V6.2
Management version = V4.0.0
Incoming timer = 45
Outgoing timer = 60
Incoming Proxy = Enabled
Outgoing Proxy = Enabled
NSP version = V4.1.0
Maximum links = 32
Delay factor = 80
Delay weight = 5
Inactivity timer = 60
Retransmit factor = 10
Routing version = V2.0.0
Type = nonrouting IV
Routing timer = 600
Broadcast routing timer = 180
Maximum address = 1023
Maximum circuits = 16
Maximum cost = 1022
Maximum hops = 30
Maximum visits = 63
Maximum area = 63
Max broadcast nonrouters = 64
Max broadcast routers = 32
Maximum path splits = 1
Area maximum cost = 1022
Area maximum hops = 30
Maximum buffers = 100
Buffer size = 576
Default access = incoming and outgoing
Pipeline quota = 4032
Alias maximum links = 32
Path split policy = Normal
Maximum Declared Objects = 31
Known Link Volatile Summary as of 21-NOV-1995 10:36:10
Link Node PID Process Remote link Remote user
8201 19.117 20200094 REMACP 25330 JONES
8200 19.129 20200094 REMACP 24711 SMITH
Node Counters as of 21-NOV-1995 10:36:10
Executor node = 19.215 (ZOOMAN)
3 Maximum logical links active
0 Aged packet loss
0 Node unreachable packet loss
0 Node out-of-range packet loss
0 Oversized packet loss
0 Packet format error
0 Partial routing update loss
0 Verification reject
$
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9996P056.HTM OSSG Documentation 26-NOV-1996 11:18:30.33Copyright © Digital Equipment Corporation 1996. All Rights Reserved.