Group:
input/output
Topic:
alarm reporting
Topic:
aspect-oriented programming
Topic:
backtracking
Topic:
data acquisition
Topic:
database consistency and reliability
Topic:
debugging by usage rules
Topic:
event controlled processing
Topic:
events
Topic:
execution tracing
Topic:
graphs in process control
Topic:
histogram
Topic:
log-structured file system
Topic:
log-structured rollback-recovery
Topic:
monitored statements and events
Topic:
monitored variable
Topic:
processing a sequence
Topic:
resourceful, redundant systems for reliability
Topic:
safety critical systems
Topic:
security by audit trail
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Summary
Logging provides a hard copy record of data or events. It may be used for management, safety standards, data acquisition, research data, security, or material accounting. It may perform limit tests and computations. It may be triggered by time intervals, data availability, alarm conditions, message output, or manual control. (cbb 5/80)
Subtopic: data logging 
| Quote: data logging useful for improving reliability, efficiency, quality, safety standards, and material accounting [»instrumentcontrol, OK]
| | Quote: a datalogger acquires and measures data, usually for humans; it may perform limit tests and other computations [»instrumentcontrol]
| | Quote: data logging can occur periodically, when a set point occurs, or under operator control [»instrumentcontrol]
| | Quote: to ensure security, a reference monitor must be tamper proof, invoked on every data reference, and small enough to be proven correct [»kargPA6_1974]
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Subtopic: event logging
| Quote: a message lists records all events including alarms and changes to setpoints, control modes, and status [»instrumentcontrol]
| | Quote: message lists are stored in system memory and automatically printed when memory space fills
| | Quote: in audit mode, the slab allocator records activity in a circular log; identifies owners of corrupted blocks [»bonwJ6_1994]
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Subtopic: dynamic queries
| Quote: PQL queries match a context-sensitive pattern of events; subqueries match context-free grammars over the call chain; the partial-order operator matches the intersection of context-free languages [»martM10_2005]
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Subtopic: display of logs
| Quote: a strip chart recorder displays too much information; better to plot a process trend vector [»dallR1_1982]
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Subtopic: update logging
| Quote: for reliability, log all updates to an object; since append-only, non-volatility is cheap [»lampBW10_1983]
| | Quote: log-based rollback-recovery must log all nondeterministic events with enough information to replay the event; useful for applications that frequently interact with the outside world [»elnoEN9_2002]
| | Quote: causal logging is as fast as optimistic logging while allowing each process to commit output independently; roll-back to most recent checkpoint; more complex [»elnoEN9_2002]
|
Subtopic: debug logging
| Quote: Grapevine logs a week's activity at each server; useful for reconstructing failures [»schrMD2_1984]
| | Quote: debug Grapevine by observing the logs of multiple servers [»schrMD2_1984]
| | Quote: logging information was important for identifying the Cornell worm [»rochJA6_1989]
| | Quote: debug a program by printing intermediate results; include extra printing with the first draft [»wilkMV_1951]
|
Subtopic: calendar logging
Quote: retrieve documents by calendar appointment; used 10x more often then traditional searches
[»hullJJ3_2001]
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Related Topics
Group: input/output (4 topics, 74 quotes)
Topic: alarm reporting (4 items)
Topic: aspect-oriented programming (2 items)
Topic: backtracking (30 items)
Topic: data acquisition (8 items)
Topic: database consistency and reliability (15 items)
Topic: debugging by usage rules (41 items)
Topic: event controlled processing (46 items)
Topic: events (44 items)
Topic: execution tracing (42 items)
Topic: graphs in process control (3 items)
Topic: histogram (5 items)
Topic: log-structured file system (11 items)
Topic: log-structured rollback-recovery (13 items)
Topic: monitored statements and events (16 items)
Topic: monitored variable (28 items)
Topic: processing a sequence (17 items)
Topic: resourceful, redundant systems for reliability (38 items)
Topic: safety critical systems (32 items)
Topic: security by audit trail
(18 items)
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