This paper deals with real-time task jitter measurement under RTLinux operating system. In the first part, it describes methods and tools developed to measure jitter in the RTLinux environment. In the second part, it is focused on discussion of results, obtained on PC hardware, and their interpretation.

hen early computer systems were being developed, hardware was designed first and software written specifically for that hardware followed. Each system was essentially handcrafted with its own instruction set, and software was developed for that specific instruction set. This included operating system software, assemblers (later compilers), and application programs. With a small user community, ...

Analysis of deleted files often provides useful information for the forensic computer examiner. Knowing where to find the deleted files, and how to interpret the metadata associated with the file’s deletion, make up the cornerstone of a successful forensic computer examination. Much like an office trash-can, the Microsoft Windows Recycle Bin is a temporary holding container for files that have ...

An operating system is the main interface for human beings to interact with computer, use its resources and run their favorite applications or do their professional work. Lots of operating systems are available for a personal computer and end users have their own choice to select one or more out of these systems. Having numerous choices for an operating system selection, and having different ed...

Many performance evaluation studies in computer architecture rely almost exclusively on simulation of the dynamic instruction stream from a single application. The benchmarks used are often CPU intensive and rely very little on the operating system, such as the SPEC benchmarks. However, a majority of computer systems are subject to a different class of workloads where these common practices may...

until recently pet scanning has been available only at major universities or teaching hospitals possessing the necessary resources and expertise to operate a research pet facility. most dedicated pet centers cost several millions of dollars, and include a cyclotron, a radiochemistry laboratory to synthesize pet radiopharmaceuticals, a multicrystal dedicated pet camera, advanced computer facilit...