PEEK Reference Manual

Glossary
PEEK Reference Manual — 529657-006
Glossary - 10
ServerNet system area network (ServerNet SAN)
response to requests received from clients across a network. For example, the
NonStop range of servers provides transaction processing, database access, and other
services. (3) A process or program that provides services to a client or a requester.
Servers are designed to receive request messages from clients or requesters; perform
the desired operations, such as database inquiries or updates, security verifications,
numerical calculations, or data routing to other computers systems; and return reply
messages to the clients or requesters. A server process is a running instance of a
server program.
ServerNet system area network (ServerNet SAN). A low-cost, high-speed network,
contained in a server, that connects processors to each other and to ServerNet
addressable controllers (SACs).
soft CME. A correctable memory error (CME) that occurred on the initial access to a
specific memory location, but did not occur during the second access to the same
memory location. A soft CME that occurs in the same location with excessive
frequency can be reclassified as a hard CME. See also correctable memory error
(CME) and hard CME.
special input/output interrupt handler. An interrupt handler, provided and enabled by an
input/output process (IOP) developer, that is invoked by the general input/output
interrupt handler and that performs processing specific to the IOP.
special interrupt microcode. Microcode that is executed when an interrupt is detected.
STKOV. The PEEK INTERRUPTS option that reports stack overflow traps. See also trap.
swap files. The disk copy of a file that is currently a part of virtual memory. Pages of the file
are swapped back and forth between physical memory and disk as they are needed.
swappable pages. The pages in a processor that are not permanently required by the
operating system and are thus available for swapping to processes needing them.
swapping. The process of copying information between physical memory and disk storage.
SYSPOOL. (1) A system storage pool. (2) The PEEK POOL element that reports on
SYSPOOL.
system. A node. All the hardware, firmware, and software component
s that are directly
connected to form an entity that is managed by one operating system image and
operated as one computer.
system clock. A clock consisting of the interval timer and a field in the system globals area
that together represent the current local civil time for a system.
system process. A process whose primary purpose is to manage system resources rather
than to solve a user's problem. Failure of a system process often causes the
processor to fail. Most system processes are automatically created when the
processor is system loaded. Contrast with user process.