VMS Help  —  SHOW  MEMORY
    Displays the availability and usage of those system resources
    that are related to memory.

    Format

      SHOW MEMORY

1  –  Qualifiers

1.1    /ALL

       /ALL (default)

    Displays all available information, that is, information
    displayed by the /FILES, /PHYSICAL_PAGES, /POOL, and /SLOTS
    qualifiers.

1.2    /BITMAP

       /BITMAP (Alpha/Integrity servers only)

    Displays information about memory use by write bitmaps (WBM) used
    with Host-Based Volume Shadowing (HBVS). If the system parameter
    SHADOWING is set to 0, no information about bitmaps is displayed
    because WBM is used only with HBVS.

    Note that the memory consumption displayed by SHOW MEMORY is
    often greater than that displayed by SHOW DEVICE /BITMAP, which
    displays the exact size (in bytes) of the bitmap. The memory used
    by a bitmap is allocated in units of pages; if a bitmap uses part
    of a page of memory, the rest of that page is unavailable for
    use.

1.3    /BUFFER_OBJECTS

       /BUFFER_OBJECTS (Alpha/Integrity servers only)

    Displays information about system resources used by buffer
    objects.

1.4    /CACHE

       /CACHE[=(keyword[,...])]

    Displays information about the Virtual I/O Cache facility or
    the Extended File Cache facility, depending on which is loaded.
    The Cache facility information is displayed as part of the SHOW
    MEMORY and SHOW MEMORY/CACHE/FULL commands.

    If the Extended File Cache is loaded, you can specify the
    following keywords and options:

    VOLUME[=device] Requests display of volume-level statistics
                    for the specified volume(s). If no device
                    is specified, defaults to SYS$DISK. Device
                    specifications may be wildcarded; if so, the
                    device specification must be based on the
                    physical device name. Specify VOLUME=* to see
                    statistics for all volumes in cache.
    FILE=filespec   Requests display of file-level statistics for
                    the specified file(s) in cache. The filespec
                    must contain an explicit or implicit device
                    specification. The filespec may be wildcarded
                    according to RMS rules. Specify FILE=dev:*.*
                    to see statistics for all files in cache for a
                    device. Partially wild file specifications that
                    are satisfied by large numbers of files on disk
                    may incur significant processing overhead during
                    display. By default, both open and closed files
                    are displayed (use the OPEN and CLOSED keywords
                    to further restrict which files are displayed).

                    Note that this command may fail if you select a
                    large number of files for display. If you receive
                    an error message, reduce the number of selected
                    files and reissue the command.
    TOPQIO[=n]      Requests display of file-level statistics for
                    the n files in cache with the highest overall QIO
                    count (n defaults to 10).
    TOPHITRATE[=n]  Requests display of file-level statistics for the
                    n files in cache with the highest overall cache
                    hit rate (n defaults to 10).
                    OPEN      Include only open files in the display
                              (default for TOPQIO and TOPHITRATE).
                    CLOSED    Include only closed files in the
                              display.

1.5    /EXACT

    Use with the /PAGE=SAVE and /SEARCH qualifiers to specify a
    search string that must match the search string exactly and must
    be enclosed with quotation marks (" ").

    If you specify the /EXACT qualifier without the /SEARCH
    qualifier, exact search mode is enabled when you set the search
    string with the Find (E1) key.

1.6    /FILES

    Displays information about the use of each paging and swapping
    file currently installed.

1.7    /FULL

    When used with /POOL, displays additional information about pool
    area.

    When used with /CACHE, displays additional information about the
    file data cache that is loaded (either VIOC or XFC).

    This qualifier is ignored unless the /CACHE or /POOL qualifier is
    specified explicitly.

1.8    /GH_REGIONS

    On Alpha, displays information about the granularity hint regions
    (GHR) that have been established. For each of these regions,
    information is displayed about the size of the region, the amount
    of free memory, the amount of memory in use, and the amount of
    memory released to OpenVMS from the region. The granularity hint
    regions information is also displayed as part of SHOW MEMORY,
    SHOW MEMORY/ALL, and SHOW MEMORY/FULL commands.

1.9    /HIGHLIGHT

       /HIGHLIGHT[=keyword]

    Use with the /PAGE=SAVE and /SEARCH qualifiers to specify the
    type of highlighting you want when a search string is found. When
    a string is found, the entire line is highlighted. You can use
    the following keywords: BOLD, BLINK, REVERSE, and UNDERLINE. BOLD
    is the default highlighting.

1.10    /OUTPUT

       /OUTPUT[=filespec]
       /NOOUTPUT

    Controls where the output of the command is sent. If you do
    not enter the qualifier, or if you enter the /OUTPUT qualifier
    without a file specification, the output is sent to the current
    process default output stream or device, identified by the
    logical name SYS$OUTPUT.

    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.

1.11    /PAGE

       /PAGE[=keyword]
       /NOPAGE (default)

    Controls the display of memory information on the screen.

    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 key, Ctrl/B      Scroll up one line.
    Down arrow key            Scroll down one line.
    Left arrow key            Scroll left one column.
    Right arrow key           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),         Get the next page of information.
    Return, Enter, Space
    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.

1.12    /PHYSICAL_PAGES

    Displays information about the amount of physical memory and the
    number of free and modified pages.

1.13    /POOL

    Displays information about the usage of each dynamic memory
    (pool) area, including the amount of free space and the size
    of the largest contiguous block in each area.

1.14    /RESERVED

       /RESERVED (Alpha/Integrity servers only)

    Displays information about memory reservations.

1.15    /SEARCH

       /SEARCH="string"

    Use with the /PAGE=SAVE qualifier to specify a string that you
    want to find in the information being displayed. Quotation marks
    are required for the /SEARCH qualifier, if you include spaces in
    the text string.

    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.

1.16    /SLOTS

    Displays information about the availability of partition control
    block (PCB) vector slots and balance slots.

1.17    /UNITS

       /UNITS=keyword

    Allows you to override the current default specified by SET
    PROCESS/UNITS so that you can display memory in your choice of
    blocks or bytes.

    Keyword options are:

    Option       Description

    BLOCKS       Displays memory in blocks (equivalent to PAGES).

    BYTES        Displays memory in bytes.

    PAGES        Displays memory in page format (equivalent to
                 BLOCKS).

1.18    /WRAP

       /WRAP
       /NOWRAP (default)

    Use with the /PAGE=SAVE qualifier to limit the number of columns
    to the width of the screen and to wrap lines that extend beyond
    the width of the screen to the next line.

    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.

2  –  Examples

    1.$ SHOW MEMORY

             System Memory Resources on 20-JAN-2001 15:22:04.11
      Physical Memory Usage (pages):   Total      Free     In Use  Modified
       Main Memory (2.00Gb)           262144    201249      60162       733
      Extended File Cache  (Time of last reset: 18-JAN-2001 17:15:14.33)
        Allocated (Mbytes)         370.00  Maximum size (Mbytes)    1024.00
        Free (Mbytes)              317.79  Minimum size (Mbytes)     370.00
        In use (Mbytes)             52.20  Percentage Read I/Os       72%
        Read hit rate                  96% Write hit rate              0%
        Read I/O count             119363  Write I/O count            46259
        Read hit count             115283  Write hit count                0
        Reads bypassing cache          45  Writes bypassing cache         0
        Files cached open             372  Files cached closed          392
        Vols in Full XFC mode           0  Vols in VIOC Compatible mode   3
        Vols in No Caching mode         0  Vols in Perm. No Caching mode  0
      Granularity Hint Regions (pages): Total    Free     In Use   Released
       Execlet code region               1024       0        586        438
       Execlet data region                256       0        256          0
       S0/S1 Executive data region        576       0        576          0
       Resident image code region        1024       0        830        194
      Slot Usage (slots):               Total    Free   Resident    Swapped
       Process Entry Slots                647     614         33          0
       Balance Set Slots                  645     614         31          0
      Dynamic Memory Usage:             Total    Free     In Use    Largest
       Nonpaged Dynamic Memory (Mb)      4.28    2.38       1.89       2.25
       Bus Addressable Memory  (Kb)    168.00  128.00      40.00     128.00
       Paged Dynamic Memory    (Mb)      5.68    3.42       2.26       3.41
       Lock Manager Dyn Memory (Mb)      1.13    0.00       1.12
      Buffer Object Usage (pages):             In Use       Peak
       32-bit System Space Windows (S0/S1)          3          3
       64-bit System Space Windows (S2)             0          0
       Physical pages locked by buffer objects      3          3
      Memory Reservations (pages):     Group  Reserved    In Use       Type
       VCC$MIN_CACHE_SIZE                ---     47360     47360  Allocated
       Total (370.00 Mbytes reserved)            47360     47360
      Swap File Usage (8KB pages):               Index      Free       Size
       DISK$X6XV_BRAHMA:[SYS0.SYSEXE]SWAPFILE.SYS
                                                     1      5168       5168
      Paging File Usage (8KB pages):             Index      Free       Size
       DISK$X6XV_BRAHMA:[SYS0.SYSEXE]PAGEFILE.SYS
                                                   254    215288     215288
       Total committed paging file usage:                              7418
      Of the physical pages in use, 4951 pages are permanently allocated to
        OpenVMS.

      This example shows reservable pages. If the reservable pages
      are a negative value, this indicates that you may want
      to consider adding to the fixed amount of pagefile space
      available.

    2.$ SHOW MEMORY/CACHE/FULL

                  System Memory Resources on 3-NOV-2001 18:36:12.79

      Extended File Cache  (Time of last reset: 31-OCT-2001 10:18:07.39)
      Allocated (Mbytes)     1370.00   Maximum size (Mbytes)   91024.00
      Free (Mbytes)          2319.75   Minimum size (Mbytes)   10  370.0
      In use (Mbytes)        3 50.25   Percentage Read I/Os    11     98%
      Read hit rate          4    79%  Write hit rate          12      0%
      Read I/O count         5 18110   Write I/O count         13    310
      Read hit count         6 14343   Write hit count         14      0
      Reads bypassing cache  7    37   Writes bypassing cache  15      0
      Files cached open      8   351   Files cached closed     16    307
      Vols in Full XFC mode  17     0   Vols in VIOC Compatible mode 17 0
      Vols in No Caching mode17     0   Vols in Perm No Caching mode 17 0

      I/O Statistics 18 - Distributions (MAX_IO_SIZE: 127 19)
      -------------------------------------------------------
      Transfer Size:      Reads    Read Hits     Writes
         1 Block IO:      35053 20     34553 21      87 22
         2 Block IO:        469          284          9
         3 Block IO:      26516        26346         24
         4 Block IO:        348          205          6
         5 Block IO:      13205        13160          0
         6 Block IO:        161          111          0
         7 Block IO:        185          152          0
             .
             .
             .
       114 Block IO:          1            0          0
       116 Block IO:          2            1          0
       121 Block IO:          1            0          0

      >127<256 Block IO:     12                       0
      >255     Block IO:     14                       0
      ----------------------------------------------------
      Totals:             84411        80535        630

                                   NOTE

       This example shows the output for the SHOW MEMORY/CACHE/FULL
       command on an Alpha system with the Extended File Cache
       loaded. The SHOW MEMORY/CACHE/FULL command will display
       different fields on an Alpha system with the Virtual I/O
       Cache loaded.

 Extended File Cache Usage

      Shows the use of the Extended File Cache facility on an Alpha
      system.

      1 Allocated        Total amount of system memory in megabytes
                         allocated to the Extended File Cache.

      2 Free             Number of allocated megabytes not currently
                         in use by the cache.

      3 In use           Number of allocated megabytes that contain
                         valid cached data.

      4 Read hit rate    Shows cache read hits as a percentage of
                         read I/Os.

      5 Read I/O count   Total number of read I/Os that have been
                         seen by the cache since the last statistics
                         reset.

      6 Read hit count   Total number of read I/Os that did not
                         perform a physical I/O, because the data
                         for these was found in the cache since the
                         prior statistics reset.

      7 Reads bypassing  Total number of reads that bypassed the
      cache              cache and went directly to disk since the
                         last statistics reset.

      8 Files cached     Total number of open files in cache.
      open

      9 Maximum size     Maximum size of the cache in megabytes.
      (Mbytes)

      10 Minimum size    Minimum size of the cache in megabytes.
      (Mbytes)           This displays the value of the memory
                         reservation, VCC$MIN_CACHE_SIZE. See the
                         VSI OpenVMS System Manager's Manual for
                         additional information.

      11 Percentage      Percentage of read I/Os that occur. For
      Read I/Os          example, a read/write I/O ratio of 100%
                         implies that all were read I/Os.

      12 Write hit rate  (Always zero for Extended File Cache,
                         Version 1.)

      13 Write I/O       Total number of write I/Os that have been
      count              seen by the cache since the last statistics
                         reset.

      14 Write hit       (Always zero for Extended File Cache,
      count              Version 1.)

      15 Writes          Total number of writes that bypassed the
      bypassing cache    cache and went directly to disk since the
                         last statistics reset.

      16 Files cached    Total number of closed files in cache.
      closed

      17 Volume modes    Total number of volumes in each caching
                         state. Note that the initial release of XFC
                         only supports VIOC compatible mode. Future
                         releases will support full mode.

      18 I/O Statistics  Systemwide distribution of I/O sizes
                         (rounded up).

      19 MAX_IO_SIZE     Current setting of the system parameter VCC_
                         MAX_IO_SIZE in blocks. The extended file
                         cache (XFC) will only cache files up to this
                         size.

      20 Reads           Number of reads for the entire system.

      21 Read Hits       Number of reads satisfied from the cache.

      22 Writes          Number of writes for the entire system.

    3.$ SHOW MEMORY/CACHE=(VOLUME=*)

                   System Memory Resources on 20-JAN-2001 15:35:32.51

      Extended File Cache Volume Statistics:

      _$7$DKA200: (DISK$X6XV_BRAHMA), Caching mode is VIOC Compatible
      Open files        1    372      Closed files        9    395
      Files ever opened 2   1007      Files ever deposed  10    240
      Allocated pages   3   6405      Locks acquired      11    736
      Total QIOs        4 166552      Read hits           12 115984
      Virtual reads     5 120068      Virtual writes      13  46484
      Hit rate          6     69 %    Read aheads         14  11766
      Read throughs     7 120021      Write throughs      15  46484
      Read arounds      8     47      Write arounds       16      0
      Ave Disk I/O Resp Time incl cache hits (microseconds)17   3497

      Total of 1 volumes in cache

 Extended File Cache Usage

      Shows the use of the Extended File Cache facility on an Alpha
      system.

      1 Open files   Number of files that are currently open and
                     cached by the extended file cache on this volume
                     at the instant the SHOW command was issued.

      2 Files ever   Number of times the extended file cache has been
      opened         requested to open a file on this volume.

      3 Allocated    Number of main memory data pages currently
      pages          being used by the extended file cache to contain
                     actual file data, for this volume.

      4 Total QIOs   Total number of QIO and PAGE I/O calls received
                     by the extended file cache on this volume.

      5 Virtual      Cumulative number of Virtual Read requests
      reads          received by the extended file cache on this
                     volume.

      6 Hit rate     Percentage of Total QIOs that were completed
                     by copying data from cache, rather than issuing
                     real I/O to a volume.

      7 Read         Number of Virtual Reads that are capable of
      throughs       being satisfied by the extended file cache.

      8 Read         Number of Virtual Reads that cannot be satisfied
      arounds        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.

      9 Closed       Number of closed files the extended file cache
      files          has in memory. If a subsequent file access
                     occurs, data will be accessible from main memory
                     rather than having to issue I/O to the real
                     volume.

      10 Files       Files removed from memory. Reasons the extended
      ever deposed   file cache may remove a file from its memory
                     include requests for memory from the rest of
                     the system, and conflicting access modes in a
                     cluster.

      11 Locks       Current number of file access locks that are in
      acquired       use on this volume.

      12 Read hits   Cumulative number of times a read has been
                     satisfied from the data cache.

      13 Virtual     Cumulative number of virtual write I/Os received
      writes         on this volume by the cache.

      14 Read        Cumulative number of times the extended file
      aheads         cache issued read ahead I/Os on this volume
                     after detecting sequential file I/O virtual
                     reads.

      15 Write       Cumulative number of times a virtual write has
      throughs       been capable of modifying cached data.

      16 Write       Cumulative number of times a virtual write has
      arounds        been detected that cannot update data in cache
                     memory.

      17 Average     Average disk I/O response time, including cache
      Disk I/O       hits, in microseconds. Note that on a symmetric
      Response       multiprocessing (SMP) system, the response time
      Time           only includes that of I/Os starting or finishing
                     on the same CPU. Any physical I/Os are ignored.

    4.$ SHOW MEMORY/CACHE=(VOL=DKA100,TOPQIO=3)

      System Memory Resources on 3-NOV-2001 18:36:12.79

      Extended File Cache Top QIO File Statistics:

      _$7$DKA200: (DISK$X6Y0_RESD), Caching mode is VIOC Compatible

      _$7$DKA200:[SYS0.SYSEXE]SYSDUMP.DMP;2 (open)
      Caching is enabled, active caching mode is Write Through
      Allocated pages   1  334      Total QIOs      6 1712
      Read hits         2 1559      Virtual reads   7 1712
      Virtual writes    3    0      Hit rate        8   91 %
      Read aheads       4    0      Read throughs   9    0
      Write throughs    5    0      Read arounds    10    0
                                     Write arounds   11    0

      _$7$DKA200:[VMS$COMMON.SYSEXE]SYS$QUEUE_MANAGER.QMAN$JOURNAL;1 (open)
      Caching is enabled, active caching mode is Write Through
      Allocated pages       931      Total QIOs         1057
      Read hits               5      Virtual reads      1044
      Virtual writes         13      Hit rate              0 %
      Read aheads             2      Read throughs      1044
      Write throughs         13      Read arounds          0
                                     Write arounds         0

      _$7$DKA200:[VMS$COMMON.SYSLIB]DECC$SHR.EXE;1 (open)
      Caching is enabled, active caching mode is Write Through
      Allocated pages       135      Total QIOs          730
      Read hits             673      Virtual reads       730
      Virtual writes          0      Hit rate              0 %
      Read aheads             2      Read throughs         0
      Write throughs          0      Read arounds          0
                                     Write arounds         0

      Total of 3 files for this volume

 Extended File Cache Top QIO File Statistics Usage

      Shows the use of the Extended File Cache Top QIO File
      Statistics facility on an Alpha system.

      1 Allocated pages  Number of main memory data pages currently
                         being used by the extended file cache to
                         contain actual file data, for this volume

      2 Read hits        Cumulative number of times a read has been
                         satisfied from the data cache.

      3 Virtual writes   Cumulative number of virtual write I/Os
                         received on this volume by the cache.

      4 Read aheads      Cumulative number of times the extended file
                         cache issued read ahead I/Os on this volume
                         after detecting sequential file I/O virtual
                         reads.

      5 Write throughs   Cumulative number of times a virtual write
                         has been capable of modifying cached data.

      6 Total QIOs       Total number of QIO and PAGE I/O calls
                         received by the extended file cache on this
                         volume.

      7 Virtual reads    Cumulative number of Virtual Read requests
                         received by the extended file cache on this
                         volume.

      8 Hit rate         Percentage of Total QIOs that were completed
                         by copying data from cache, rather than
                         issuing real I/O to a volume.

      9 Read throughs    Number of Virtual Reads that are capable of
                         being satisfied by the extended file cache.

      10 Read arounds    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.

      11 Write arounds   Cumulative number of times a virtual write
                         has been detected that cannot update data in
                         cache memory.

    5.$ SHOW MEMORY/CACHE=(VOL=DKA100,TOPHITRATE=3)

      System Memory Resources on 3-NOV-2001 18:36:12.79

      Extended File Cache Top Hitrate File Statistics:

      _$7$DKA200: (DISK$X6Y0_RESD), Caching mode is VIOC Compatible

      _$7$DKA200:[VMS$COMMON.SYSLIB]SMGSHR.EXE;1 (open)
      Caching is enabled, active caching mode is Write Through
      Allocated pages   1   16      Total QIOs      6  277
      Read hits         2  267      Virtual reads   7  277
      Virtual writes    3    0      Hit rate        8   96 %
      Read aheads       4    0      Read throughs   9  277
      Write throughs    5    0      Read arounds    10    0
                                     Write arounds   11    0

      _$7$DKA200:[VMS$COMMON.SYSLIB]UTIL$SHARE.EXE;1 (open)
      Caching is enabled, active caching mode is Write Through
      Allocated pages         8      Total QIOs          185
      Read hits             178      Virtual reads       185
      Virtual writes          0      Hit rate             96 %
      Read aheads             1      Read throughs       185
      Write throughs          0      Read arounds          0
                                     Write arounds         0

      _$7$DKA200:[VMS$COMMON.SYSLIB]CMA$TIS_SHR.EXE;1 (open)
      Caching is enabled, active caching mode is Write Through
      Allocated pages         6      Total QIOs          165
      Read hits             159      Virtual reads       165
      Virtual writes          0      Hit rate             96 %
      Read aheads             2      Read throughs       165
      Write throughs          0      Read arounds          0
                                     Write arounds         0

      Total of 3 files for this volume

 Extended File Cache Top Hitrate File Statistics Usage

      Shows the use of the Extended File Cache Top Hitrate File
      Statistics facility on an Alpha system.

      1 Allocated pages  .Number of main memory data pages currently
                         being used by the extended file cache to
                         contain actual file data, for this volume

      2 Read hits        Cumulative number of times a read has been
                         satisfied from the data cache.

      3 Virtual writes   Cumulative number of virtual write I/Os
                         received on this volume by the cache.

      4 Read aheads      Cumulative number of times the extended file
                         cache issued read ahead I/Os on this volume
                         after detecting sequential file I/O virtual
                         reads.

      5 Write throughs   Cumulative number of times a virtual write
                         has been capable of modifying cached data.

      6 Total QIOs       Total number of QIO and PAGE I/O calls
                         received by the extended file cache on this
                         volume.

      7 Virtual reads    Cumulative number of Virtual Read requests
                         received by the extended file cache on this
                         volume.

      8 Hit rate         Percentage of Total QIOs that were completed
                         by copying data from cache, rather than
                         issuing real I/O to a volume.

      9 Read throughs    Number of Virtual Reads that are capable of
                         being satisfied by the extended file cache.

      10 Read arounds    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.

      11 Write arounds   Cumulative number of times a virtual write
                         has been detected that cannot update data in
                         cache memory.

    6.$ SHOW MEMORY/CACHE=(FILE=SYS$LOGIN:*.*,OPEN,CLOSED)

      System Memory Resources on 3-NOV-2001 18:36:12.79

      Extended File Cache Statistics:

      _$7$DKA200:[SYS0.SYSMGR]ACCOUNTNG.DAT;1 (open)
      Caching is enabled, active caching mode is Write Through
      Allocated pages   1    1      Total QIOs      6   17
      Read hits         2    0      Virtual reads   7    1
      Virtual writes    3   16      Hit rate        8    0 %
      Read aheads       4    0      Read throughs   9    0
      Write throughs    5   16      Read arounds    10    0
                                     Write arounds   11    0

      _$7$DKA200:[SYS0.SYSMGR]ACME$SERVER.LOG;129 (open)
      Caching is enabled, active caching mode is Write Through
      Allocated pages         1      Total QIOs            2
      Read hits               0      Virtual reads         1
      Virtual writes          1      Hit rate              0 %
      Read aheads             0      Read throughs         1
      Write throughs          1      Read arounds          0
                                     Write arounds         0

      _$7$DKA200:[SYS0.SYSMGR]CLUE$STARTUP_BRAHMA.LOG;935 (closed)
      Caching is enabled, active caching mode is Write Through
      Allocated pages         2      Total QIOs           32
      Read hits               0      Virtual reads         0
      Virtual writes         32      Hit rate              0 %
      Read aheads             0      Read throughs         0
      Write throughs         32      Read arounds          0
                                     Write arounds         0
              .
              .
              .

      _$7$DKA200:[VMS$COMMON.SYSMGR]VMS$AUDIT_SERVER.DAT;1 (open)
      Caching is enabled, active caching mode is Write Through
      Allocated pages         1      Total QIOs            8
      Read hits               3      Virtual reads         8
      Virtual writes          0      Hit rate              37 %
      Read aheads             1      Read throughs         8
      Write throughs          0      Read arounds          0
                                     Write arounds         0

      Total of 50 files for this volume

 Extended File Cache Statistics Usage

      Shows the use of the Extended File Cache Statistics facility on
      an Alpha system.

      1 Allocated pages  .Number of main memory data pages currently
                         being used by the extended file cache to
                         contain actual file data, for this volume

      2 Read hits        Cumulative number of times a read has been
                         satisfied from the data cache.

      3 Virtual writes   Cumulative number of virtual write I/Os
                         received on this volume by the cache.

      4 Read aheads      Cumulative number of times the extended file
                         cache issued read ahead I/Os on this volume
                         after detecting sequential file I/O virtual
                         reads.

      5 Write throughs   Cumulative number of times a virtual write
                         has been capable of modifying cached data.

      6 Total QIOs       Total number of QIO and PAGE I/O calls
                         received by the extended file cache on this
                         volume.

      7 Virtual reads    Cumulative number of Virtual Read requests
                         received by the extended file cache on this
                         volume.

      8 Hit rate         Percentage of Total QIOs that were completed
                         by copying data from cache, rather than
                         issuing real I/O to a volume.

      9 Read throughs    Number of Virtual Reads that are capable of
                         being satisfied by the extended file cache.

      10 Read arounds    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.

      11 Write arounds   Cumulative number of times a virtual write
                         has been detected that cannot update data in
                         cache memory.

    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.

 Physical Memory Usage

      Shows the use of physical memory.

      1 Total      Number of physical memory pages available for
                   general system use. Multiport memory pages used
                   for shared memory global sections, mailboxes,
                   and common event blocks are not included in this
                   number.

      2 Free       Number of pages on the free page list.

      3 In Use     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   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        Number of pages on the bad page list.

      Dynamic      Number of memory errors detected after the system
                   was booted.

      I/O Errors   Number of errors detected during page fault
                   handling.

      Static       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.

    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

 Slot Usage (slots)

      Displays the use of process entry slots and balance set slots.

      1 Total      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       Number of slots currently available.

      3 Resident   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    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.

    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

 Dynamic Memory Usage (in bytes)

      Shows the use of the nonpaged and paged pool areas that
      allocate variably sized blocks.

      1 Total      Total number of bytes set aside for each area.

      2 Free       Total amount of free space in each dynamic memory
                   area.

      3 In Use     Amount of space currently allocated from each
                   area. This number is the total size minus the
                   number of free bytes.

      4 Largest    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.

    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) 3499998720 Maximum Size (pagelets)  3 976560
       Free Space (bytes)      4 22230144 Space in Use (bytes)     52763648
       Largest Variable Block  6 19676672 Smallest Variable Block  7   2176
       Number of Free Blocks   8    38334 Free Blocks LEQU 64 Bytes9      0
       Free Blocks on Lookasides16  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 Bytes9      0
       Free Blocks on Lookasides16      0  Lookaside Space (bytes)      0

      Paged Dynamic Memory                      (Lists + Variable)
       Current Size (MB)       1    22.88 Current Size (pagelets)   1 46864
       Free Space (MB)         4    21.96 Space in Use (MB)         5  0.91
       Largest Variable Block  6    21.77 Smallest Variable Block(MB)721.77
       Number of Free Blocks   8      166 Free Blocks LEQU 64 Bytes  9    4
       Free Blocks on Lookasides16     165 Lookaside Space (KB)      201.85
       Over-limit Lookaside Blocks17     3 Over-limit Space (KB)     7.45

      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

 Dynamic Memory

      Shows the use of dynamic memory areas consisting of variably
      sized blocks.

      1 Current Size     Current size (in 512-byte pagelets on Alpha
                         ) of each dynamic memory area. For the lock
                         manager display, the unit of measurement is
                         megabytes.

      2 Initial Size     Initial size of nonpaged dynamic memory and
                         the name of the system parameter (NPAGEDYN)
                         that controls this size.

      3 Maximum Size     Maximum size to which nonpaged dynamic
                         memory can grow and the name of the system
                         parameter (NPAGEVIR) that controls this
                         size.

      4 Free Space       Amount of free space in each dynamic memory
                         area.

      5 Space in Use     Amount of space currently allocated from
                         each area.

      6 Largest Block    Size of the largest contiguous area in each
                         pool area.

      7 Smallest Block   Size of the smallest hole (free block) in
                         each pool area.

      8 Free Blocks      Total number of free blocks in each pool
                         area. The size of this number is a measure
                         of pool fragmentation.

      9 Blocks LEQU 64   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.

      10 Empty Pages     Number of pages that do not have any packets
                         allocated.

      11 Free Packets    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.

      12 Hits            Total number of packet allocations.

      13 Misses          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.

      14 Expansions      Total number of times that dynamic memory
                         increased by a page to satisfy packet
                         allocation requests.

      15 Packet Size     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.

      16 Lookasides      Total number of memory packets placed
      Free Blocks        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 cannot 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.

      17 Over-limit      Total number of memory packets that exist
      Lookaside Blocks   on "lookaside lists" that are no longer
                         actively used because the SYSGEN parameter
                         PAGED_LAL_SIZE was lowered. These packets
                         will be available for use again if the
                         SYSGEN parameter is increased to include
                         them, or if there was a paged pool shortage
                         and they are reclaimed. If there are no
                         lookaside list packets on these "over-limit"
                         lists then this line will not appear.

    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

 Paging File Usage (in blocks)

      Shows the usage of paging and swapping files.

      1 Swap File Usage  Number of swap files. Begins with an index
                         value of 1 and increases in count.

      2 Paging File      Number of page files. Begins with an index
      Usage              value of 254 and decreases in count.

      3 Total Paging     Total committed page file usage. As in
      File Usage         previous releases, more pages can reside
                         in page-file sections systemwide than would
                         fit into installed page files.
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