Preemptive Kernel Support in LINUX/RT

TimeSys Corporationcements have been made to the TimeSys Linux/RT operating system distribution that make the Linux kernel preemptable. This new feature enhances hard real-time responsiveness by minimizing wait times for higher priority real-time tasks.

The operating system supports temporal firewalls to provide guaranteed Quality of Service (QoS) support. A suite of products is sold called SuiteTime that consists of TimeWarp integrated development environment, a profiling and visualization tool called TimeTrace and the TimeWiz modeling, analysis and simulation tools for real-time systems.

The system makes the Linux kernel preemptable through a set of changes to the core Linux kernel. The operating system is positioned as the embedded real-time kernel of choice, offering the benefits of an RTOS solution, but providing the open Linux environment. Features for real-time support included in the system are: Pre-emptive fixed priority scheduling, 256 priorities, priority inheritance support, high-resolution timers, and TimeTrace tool to support measurement and visualization of real-time performance. The system supports multi-processor architectures and offers CPU reservations that guarantee QoS support.

The system now offers hard real-time support, higher responsiveness, integrated QoS support and a suite of productivity tools that together offer better value than all other embedded Linux alternatives and even legacy RTOS platforms.

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