458 Glossary
reliability function A function that describes the probability that a system
will work properly in the time interval [0,t]. (Section 1.6.2)
request phase The smallest interval between the execution of one process on
one iteration and the start of a the next data-dependent process on the
succeeding iteration. (Section 6.3.2)
requirements An informal description of what a system should do. A
precursor to a specification.
resource dependency In scheduling, a scheduling constraint that comes from
the use of an external resource. (Section 4.2.2)
response time The difference between completion and release time of a
process. (Section 4.2.1)
ripple scheduling A method for scheduling and allocating quality-of-service
requests in a distribu