diff --git a/pep-0418.txt b/pep-0418.txt index aa01f859b..bddc18994 100644 --- a/pep-0418.txt +++ b/pep-0418.txt @@ -610,14 +610,14 @@ Glossary :Clock: An instrument for measuring time. Different clocks have different - characteristics; for example, a clock with + characteristics; for example, a clock with nanosecond may start to after a few minutes, while a less precise clock remained accurate for days. This PEP is primarily concerned with clocks which use a unit of seconds. :Counter: A clock which increments each time a certain event occurs. A - counter is , but not . It can + counter is strictly monotonic, but not a monotonic clock. It can be used to generate a unique (and ordered) timestamp, but these timestamps cannot be mapped to ; tick creation may well be bursty, with several advances in the same millisecond followed @@ -630,12 +630,6 @@ Glossary when profiling, but they do not map directly to user response time, nor are they directly comparable to (real time) seconds. -:Duration: - Elapsed time. The difference between the starting and ending - times. A defined creates an implicit (and usually large) - duration. More precision can generally be provided for a - relatively small . - :Drift: The accumulated error against "true" time, as defined externally to the system. Drift may be due to imprecision, or to a difference @@ -657,12 +651,7 @@ Glossary Moving in at most one direction; for clocks, that direction is forward. The should also be , and should be convertible to a unit of seconds. The tradeoffs often include lack - of a defined or mapping to , and being more - expensive (in , power usage, or spent within - calls to the clock itself) to use. For example, the clock may - represent (a constant multiplied by) ticks of a specific quartz - timer on a specific CPU core, and calls would therefore require - synchronization between cores. + of a defined or mapping to . :Precision: The amount of deviation among measurements of the same physical