_$7$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.