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This is a list of real-time operating systems (RTOSs). This is an operating system in which the time taken to process an input stimulus is less than the time lapsed until the next input stimulus of the same type.
"There is no direct counterpart to z/OS batch processing in PC or UNIX systems. Batch jobs are typically executed at a scheduled time or on an as-needed basis. Perhaps the closest comparison is with processes run by an at or cron command in UNIX, although the differences are significant." [7]
A job scheduler is a computer application for controlling unattended background program execution of jobs. [1] This is commonly called batch scheduling, as execution of non-interactive jobs is often called batch processing, though traditional job and batch are distinguished and contrasted; see that page for details.
Real-time Java is a catch-all term for a combination of technologies that enables programmers to write programs that meet the demands of real-time systems in the Java programming language. Java's sophisticated memory management , native support for threading and concurrency, type safety , and relative simplicity have created a demand for its ...
Conceptually, it is similar to preemptive multitasking used in operating systems; an analogy would be that the time slice given to each active thread is one CPU cycle. For example: Cycle i + 1 : an instruction from thread B is issued.
A "hard" real-time operating system (hard RTOS) has less jitter than a "soft" real-time operating system (soft RTOS); a late answer is a wrong answer in a hard RTOS while a late answer is acceptable in a soft RTOS. The chief design goal is not high throughput, but rather a guarantee of a soft or hard performance category.
For example, a near-real-time display depicts an event or situation as it existed at the current time minus the processing time, as nearly the time of the live event. [ 12 ] The distinction between the terms "near real time" and "real time" is somewhat nebulous and must be defined for the situation at hand.
Java Optimized Processor [4] for FPGAs. A PhD thesis is available, and it has been used in several commercial applications. [1] In 2019 it was extended to be energy aware (EAJOP). [5] Some commercial implementations included: The aJile processor was the most successful ASIC Java processor. [1] Cjip from Imsys Technologies.