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OpenVMS DCL Dictionary
Extended File Cache Statistics Usage
Shows the use of the Extended File Cache Statistics facility on an
Alpha system.
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(1) Allocated pages
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.Number of main memory data pages currently being used by the extended
file cache to contain actual file data, for this volume
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(2) Read hits
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Cumulative number of times a read has been satisfied from the data
cache.
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(3) Virtual writes
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Cumulative number of virtual write I/Os received on this volume by the
cache.
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(4) Read aheads
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Cumulative number of times the extended file cache issued read ahead
I/Os on this volume after detecting sequential file I/O virtual reads.
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(5) Write throughs
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Cumulative number of times a virtual write has been capable of
modifying cached data.
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(6) Total QIOs
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Total number of QIO and PAGE I/O calls received by the extended file
cache on this volume.
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(7) Virtual reads
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Cumulative number of Virtual Read requests received by the extended
file cache on this volume.
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(8) Hit rate
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Percentage of Total QIOs that were completed by copying data from
cache, rather than issuing real I/O to a volume.
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(9) Read throughs
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Number of Virtual Reads that are capable of being satisfied by the
extended file cache.
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(10) Read arounds
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Number of Virtual Reads that cannot be satisfied by the extended file
cache. Reasons for this include the presence of a non-XFC compliant
node in an OpenVMS cluster, and the receipt of an I/O that is larger
than VCC_MAX_IO_SIZE.
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(11) Write arounds
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Cumulative number of times a virtual write has been detected that
cannot update data in cache memory.
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| #7 |
$ SHOW MEMORY/PHYSICAL_PAGES
System Memory Resources on 3-NOV-2001 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.
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Physical Memory Usage
Shows the use of physical memory.
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(1) Total
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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.
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(2) Free
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Number of pages on the free page list.
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(3) In Use
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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.
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(4) Modified
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Number of pages on the modified page list.
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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.
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Total
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Number of pages on the bad page list.
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Dynamic
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Number of memory errors detected after the system was booted.
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I/O Errors
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Number of errors detected during page fault handling.
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Static
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Number of memory errors detected during boot-time scan.
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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.
| #8 |
$ SHOW MEMORY/SLOTS
System Memory Resources on 3-NOV-2001 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
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Slot Usage (slots)
Displays the use of process entry slots and balance set slots.
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(1) Total
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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.
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(2) Free
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Number of slots currently available.
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(3) Resident
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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.
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(4) Swapped
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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.
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| #9 |
$ SHOW MEMORY/POOL
System Memory Resources on 5-DEC-2001 03:59:35.29
Dynamic Memory Usage (bytes): Total (1) Free (2) In Use (3) Largest (4)
Nonpaged Dynamic Memory 24993792 23511872 1481920 23363776
Bus Addressable Memory 131072 114688 16384 114688
Paged Dynamic Memory 5799936 3530784 2269152 3530176
Lock Manager Dynamic Memory 1048576 254976 793600
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Dynamic Memory Usage (in bytes)
Shows the use of the nonpaged and paged pool areas that allocate
variably sized blocks.
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(1) Total
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Total number of bytes set aside for each area.
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(2) Free
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Total amount of free space in each dynamic memory area.
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(3) In Use
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Amount of space currently allocated from each area. This number is the
total size minus the number of free bytes.
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(4) Largest
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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). This
attribute does not apply to the lock manager, as all items for the lock
manager are the same size.
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| #10 |
$ SHOW MEMORY/POOL/FULL
System Memory Resources on 5-DEC-2001 03:59:35.29
Nonpaged Dynamic Memory (Lists + Variable)
Current Size (bytes) (1) 24993792 Current Size (pagelets) (1) 48816
Initial Size (NPAGEDYN) (2) 24993792 Initial Size (pagelets) (2) 48816
Maximum Size (NPAGEVIR) (3)499998720 Maximum Size (pagelets) (3) 976560
Free Space (bytes) (4) 22230144 Space in Use (bytes) (5)2763648
Largest Variable Block (6) 19676672 Smallest Variable Block (7) 2176
Number of Free Blocks (8) 38334 Free Blocks LEQU 64 Bytes(9) 0
Free Blocks on Lookasides(16) 38330 Lookaside Space (bytes) 2537472
Bus Addressable Memory (Lists + Variable)
Current Size (bytes) (1) 131072 Current Size (pagelets) (1) 256
Initial Size (NPAGEDYN) (2) 131072 Initial Size (pagelets) (2) 256
Free Space (bytes) (4) 114688 Space in Use (bytes) (5) 16384
Largest Variable Block (6) 114688 Smallest Variable Block (7) 114688
Number of Free Blocks (8) 1 Free Blocks LEQU 64 Bytes(9) 0
Free Blocks on Lookasides(16) 0 Lookaside Space (bytes) 0
Paged Dynamic Memory
Current Size (PAGEDYN) (1) 5799936 Current Size (pagelets) (1) 11328
Free Space (bytes) (4) 3518288 Space in Use (bytes) (5)2281648
Largest Variable Block (6) 3517584 Smallest Variable Block (7) 16
Number of Free Blocks (8) 25 Free Blocks LEQU 64 Bytes(9) 23
Lock Manager Dynamic Memory
Current Size (Mbytes) (1) 13.85 Current Size (pages) (1) 1774
Free Space (Mbytes) (4) 10.06 Hits (12) 54050
Space In Use (5) 3.79 Misses (13) 1664
Number of Empty Pages (10) 26 Expansions (14) 1792
Number of Free Packets (11) 41244 Packet Size (15) 256
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Dynamic Memory
Shows the use of dynamic memory areas consisting of variably sized
blocks.
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(1) Current Size
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Current size (in 512-byte pagelets on Alpha and in bytes and pages on
VAX) of each dynamic memory area. For the lock manager display, the
unit of measurement is megabytes.
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(2) Initial Size
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Initial size of nonpaged dynamic memory and the name of the system
parameter (NPAGEDYN) that controls this size.
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(3) Maximum Size
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Maximum size to which nonpaged dynamic memory can grow and the name of
the system parameter (NPAGEVIR) that controls this size.
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(4) Free Space
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Amount of free space in each dynamic memory area.
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(5) Space in Use
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Amount of space currently allocated from each area.
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(6) Largest Block
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Size of the largest contiguous area in each pool area.
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(7) Smallest Block
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Size of the smallest hole (free block) in each pool area.
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(8) Free Blocks
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Total number of free blocks in each pool area. The size of this number
is a measure of pool fragmentation.
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(9) Blocks LEQU 64
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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.
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(10) Empty Pages
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Number of pages that do not have any packets allocated.
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(11) Free Packets
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Total number of packets not in use. This number is the sum of free
packets from partially used pages and the packets of all Empty Pages.
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(12) Hits
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Total number of packet allocations.
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(13) Misses
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Total number of packet allocation requests that could not be satisfied
because the number of packets requested were not available. A miss
causes dynamic memory to expand by one page to satisfy the packet
allocation request.
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(14) Expansions
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Total number of times that dynamic memory increased by a page to
satisfy packet allocation requests.
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(15) Packet Size
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Packet size of 256 bytes, which is used by the lock manager to hold
either a lock block data structure or a resource block data structure.
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(16) Lookasides Free Blocks
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Total number of memory packets that the system has preallocated and
placed on "lookaside lists". If a packet of the correct size is on a
lookaside list, it can be allocated very quickly and efficiently,
however, it can not then be used as part of any other size packet. An
excess of packets on the lookaside list can be a cause for the
inability to allocate other sizes.
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| #11 |
$ SHOW MEMORY/FILES
System Memory Resources on 22-MAY-2001 19:04:19.67
Swap File Usage (8KB pages): Index (1) Free Size
DISK$ALPHASYS:[SYS48.SYSEXE]SWAPFILE.SYS 1 904 904
DISK$SWAP:[SYS48.SYSEXE]SWAPFILE.SYS;1 2 1048 1048
Total size of all swap files: 1952
Paging File Usage (8KB pages): Index (2) Free Size
DISK$PAGE:[SYS48.SYSEXE]PAGEFILE.SYS;1 253 16888 16888
DISK$ALPHASYS:[SYS48.SYSEXE]PAGEFILE.SYS 254 16888 16888
Total size of all paging files: 33776
Total committed paging file usage: (3) 1964
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Paging File Usage (in blocks)
Shows the usage of paging and swapping files.
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(1) Swap File Usage
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Number of swap files. Begins with an index value of 1 and increases in
count.
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(2) Paging File Usage
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Number of page files. Begins with an index value of 254 and decreases
in count.
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(3) Total Paging File Usage
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Total committed page file usage. As in previous releases, more pages
can reside in page-file sections systemwide than would fit into
installed page files.
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SHOW NETWORK
Displays information about network services registered on a node.
Format
SHOW NETWORK [network-service]
Parameter
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.
Description
The SHOW NETWORK command displays information about network services
available on an OpenVMS system.
Qualifiers
/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.
Examples
| #1 |
$ SHOW NETWORK
Product: DECnet Node: GALENA Address(es): 19.64
Product: TCP/IP Node: GALENA.zka.cpq.com Address(es): 16.32.0.138
|
The SHOW NETWORK command in this example displays all the network
services currently registered on the local node, and the name and
address of that node.
| #2 |
$ SHOW NETWORK "TCP/IP"
Product: TCP/IP Node: GALENA.zka.cpq.com Address(es): 16.32.0.138
|
The SHOW NETWORK command in this example displays the TCP/IP network
service registered on the local node.
| #3 |
$ SHOW NETWORK/FULL
The following network service is available at this time:
Product: DECNET Manufacturer: Compaq Computer Corporation
Node: NEMYA Address(es): 4.26
Network Type: DNA V Interface(s): net 0
Node 0
at 2001-02-26-10:35:28.737-05:00I526.997
Identifiers
Name = DEC:.LKR.NEMYA
Address =
{
(
[ DNA_CMIP-MICE ] ,
[ DNA_SessionControlV3 , number = 19 ] ,
[ DNA_OSItransportV1 , 'DEC0'H ] ,
[ DNA_OSInetwork , 49::00-04:AA-00-04-00-1A-10:21 (DEC:.LKR.NEMYA) ]
,)
(
[ DNA_CMIP-MICE ] ,
[ DNA_SessionControlV2 , number = 19 ] ,
[ DNA_OSItransportV1 , 'DEC0'H ] ,
[ DNA_IP , 0.0.0.0 ]
,)
(
[ DNA_CMIP-MICE ] ,
[ DNA_SessionControlV3 , number = 19 ] ,
[ DNA_NSP ] ,
[ DNA_OSInetwork , 49::00-04:AA-00-04-00-1A-10:20 (DEC:.LKR.NEMYA) ]
)
}
Status
UID = 06E08000-DF79-11D4-8001-AA0004001A10
State = On
Functions Enabled =
{
Address Watcher ,
CMIP Listener
}
ID = 08-00-2B-E5-A8-AB
Characteristics
Version = T5.0.3
Implementation =
{
[
Name = OpenVMS AXP ,
Version = "X901-SSB"
] ,
[
Name = Compaq DECnet-Plus for OpenVMS ,
Version = "V7.3 30-DEC-2000 01:14:34.32"
]
}
Script Location = <Default value>
Maximum Listeners = 0
Listener Template = <Default value>
Secondary Names =
{
LOCAL:.NEMYA
}
Counters
Creation Time = 2001-02-05-11:53:38.135-05:00Iinf
Renames = 1
Changes of ID = 9
IDROM Check Failures = 0
Changes of Address = 0
Node 0 Session Control Port SCL$PORT$12010029
at 2001-02-26-10:35:30.230-05:00I526.997
Identifiers
Name = SCL$PORT$12010029
Status
Client = Session Control Application 42
Local End User Address = UIC = [0,0]SYSTEM
Transport Port = OSI Transport Port OSI$PORT_0_002A
Direction = Outgoing
Remote End User Address = number = 42
Node Name Sent = DEC:.LKR.NEMYA
Version Sent = V3
Outgoing Network Priority = 0
Incoming Network Priority = 0
Process Identifier = "00000127"
Counters
Creation Time = 2001-02-26-10:33:14.104-05:00I526.966
Node 0 Session Control Port SCL$PORT$1201002A
at 2001-02-26-10:35:30.230-05:00I526.997
Identifiers
Name = SCL$PORT$1201002A
Status
Client = Session Control Application 42
Local End User Address = number = 42
Transport Port = OSI Transport Port OSI$PORT_0_002B
Direction = Incoming
Remote End User Address = UIC = [0,0]SYSTEM
Node Name Sent = DEC:.LKR.NEMYA
Version Sent = V3
Outgoing Network Priority = 0
Incoming Network Priority = 0
Process Identifier = "00000115"
Counters
Creation Time = 2001-02-26-10:33:14.112-05:00I526.966
Node 0 Session Control Port SCL$PORT$1201002D
at 2001-02-26-10:35:30.230-05:00I526.997
Identifiers
Name = SCL$PORT$1201002D
Status
Client = Session Control Application 42
Local End User Address = UIC = [0,0]SYSTEM
Transport Port = OSI Transport Port OSI$PORT_0_002E
Direction = Outgoing
Remote End User Address = number = 42
Node Name Sent = DEC:.LKR.NEMYA
Version Sent = V3
Outgoing Network Priority = 0
Incoming Network Priority = 0
Process Identifier = "0000012C"
Counters
Creation Time = 2001-02-26-10:35:19.522-05:00I526.996
Node 0 Session Control Port SCL$PORT$1201002E
at 2001-02-26-10:35:30.231-05:00I526.997
Identifiers
Name = SCL$PORT$1201002E
Status
Client = Session Control Application 42
Local End User Address = number = 42
Transport Port = OSI Transport Port OSI$PORT_0_002F
Direction = Incoming
Remote End User Address = UIC = [0,0]SYSTEM
Node Name Sent = DEC:.LKR.NEMYA
Version Sent = V3
Outgoing Network Priority = 0
Incoming Network Priority = 0
Process Identifier = "00000115"
Counters
Creation Time = 2001-02-26-10:35:19.529-05:00I526.996
Node 0 Session Control
at 2001-02-26-10:35:32.081-05:00I526.997
Counters
Creation Time = 2001-02-06-23:56:24.297-05:00Iinf
Access Control Violations = 0
Backtranslation Deletions = 0
Deleted Maintained Objects = 0
Dangling Links = 0
Verification Failures = 0
$
|
The SHOW NETWORK/FULL command in this example displays all the
information available about all the network services registered on the
local node.
|
