How does the memory locking technique improve the performance of a real time system?

Memory locking prevents a page from being swapped from memory to hard disk. In the absence of memory locking feature, memory access times of even critical real-time tasks can show large jitter, as the access time would greatly depend on whether the required page is in the physical memory or has been swapped out.

What are the types of real time operating system?

Three types of RTOS are 1) Hard time 2) Soft time ,and 3) Firm time.

What are examples of real-time applications?

Examples of RTAs include:

• Videoconference applications.
• VoIP (voice over Internet Protocol)
• Online gaming.
• Community storage solutions.
• Some e-commerce transactions.
• Chatting.
• IM (instant messaging)

Which of the following method is used to improve the main memory utilization?

Explanation: Swapping is a technique in which the process is removed from the main memory and stored in secondary memory. It is used to improve the main memory utilization.

What is the priority of a real-time task?

Most real-time systems are priority based. – Priorities are application-specific. The scheduler always gives the CPU to the highest-priority task which is ready to run. Context switches occur only when tasks explicitly give up control of the CPU.

What is real time scheduling in operating system?

A real-time scheduling System is composed of the scheduler, clock and the processing hardware elements. In a real-time system, a process or task has schedulability; tasks are accepted by a real-time system and completed as specified by the task deadline depending on the characteristic of the scheduling algorithm.

Which of the following is an example of real time processing?

A great example of real-time processing is data streaming, radar systems, customer service systems, and bank ATMs, where immediate processing is crucial to make the system work properly.

Is Process control a real time operating system?

Conventional process control systems today are organized around a single computer with a realtime operating system as the key element. The function of the realtime operation system is to control resources in the system shared by application tasks including input/output devices, computer memory, and the CPU itself.

What are two real-time communication methods?

Examples of real-time communications include:

• Voice over landlines and mobile phones.
• VoIP.
• Instant messaging (e.g., WhatsApp, WeChat, Facebook Messenger)
• Video and teleconferencing.
• Robotic telepresence.

What is real-time and near real-time?

Real-time data is data that’s collected, processed, and analyzed on a continual basis. It’s information that’s available for use immediately after being generated. Near real-time data is a snapshot of historical data, so teams are left viewing a situation as it existed in the recent past rather than as it is now.

Which of the following algorithms tends to minimize the process flow time *?

Discussion Forum