PEEK Reference Manual

Glossary
PEEK Reference Manual — 529657-006
Glossary - 3
extensible data segment
and flat segments. Extended data segments are allocated by the
ALLOCATESEGMENT or SEGMENT_ALLOCATE_ Guardian procedure.
extensible data segment. An extended data segment for which swap file extents are not
allocated until needed.
EXTPOOL. (1) A fixed-size system storage pool. (2) The PEEK POOL element that reports
the size of EXTPOOL.
fault address. Part of an absolute extended address that specifies the logical page to be
swapped into physical memory by the memory manager.
file system. A set of operating system procedures and data structures that provides for
communication between a process and a file, which can be a disk file, a device other
than disk, or another process.
FLEXPOOL. (1) A system storage pool of variable size. (2) The PEEK POOL element that
reports the size of FLEXPOOL.
FLEXPOOL64. (1) A system storage pool of variable size. (2) The PEEK POOL element
that reports the size of FLEXPOOL64.
frame. The smallest unit of memory that the memory manager handles (allocates or
deallocates) at one time. The size of a frame varies by system. On most NonStop
servers, the frame size is 16,384 bytes (16 Kilobytes.) Also called physical page.
free pages. The swappable pages in a system that are not assigned to any process.
free space. The available space in a memory pool.
general input/output interrupt handler. An interrupt handler provided by the operating
system that is invoked when a physical input/output operation finishes. The general
input/output interrupt handler can optionally invoke a special input/output interrupt
handler.
Guardian. An environment available for interactive or programmatic use with the NonStop
operating system. Processes that run in the Guardian env
ironment use the Guardian
system procedure calls as their application program interface. Interactive users of the
Guardian environment use the HP Tandem Advanced Command Language (TACL) or
other command interpreter.
hard CME. A correctable memory error (CME) that occurred during consecutive access
attempt
s to a specific memory location. See also
correctable memory error (CME) and
soft CME.
high PIN. A PIN in the range 256 or higher. See also
process identification number (PIN)
and low PIN.