Real Time Kernel

I need a real time operating system for reduced latency and to increase the predictability and reliability of time-sensitive, mission-critical applications. I would like to run time-sensitive mission-critical applications using Linspire with a Linux Enterprise type real time kernel to reduce process dispatch latencies. Basically, it needs to:

*Provide precise timing and synchronization with a preemptible real time kernel for advanced application workloads
*Strengthen reliability of mission-critical workloads with process and task prioritization and the ability to assign high-priority processes
*Reduce latency and maximize application performance through virtualization and also have the capability of identifying and resolving bottlenecks with tracing and debugging tools
*Increase efficiency with the ability to mix real time and non-real time workloads in a single virtual machine
*Kernel Pre-emption with fast response to external events, optimized kernel sections
*CPU Shielding to provide dedicated resources such as CPUs and memory for high priority processes
*Priority Inheritance to raise priority in case of lock contention
*Interrupt Threads to combine interrupts into threads, which can be prioritized and assigned to specific CPUs
*High Resolution Timers for improved accuracy for better process accounting and synchronization

Yes, I need this is a simulation environment.

Thanks!