What are system resources?
System resources are components on a computer that are available to use the operating system and other applications. The most remarkable system is the amount of memory used, but CPU time must also be considered here. Every time the application starts, the application requires memory from the operating system and a slice of CPU time to perform its function. For example, when a computer user launches a text processing app, clicks an application icon, and the program starts shortly afterwards. During the time the user is waiting to start the program, the operating system provides resources for the processing of this application. In principle, there is essentially space between other processes and applications that can run at the time of the program. When it launches the application of the text processor, the operating system sends a request to provide the necessary system resources of the Pror.
Depending on the amount of memory available, the application can open up quickly or can open a little pomaLess if less memory is available when the application is started. Sometimes there is not enough memory to start the application immediately, in which case the operating system will recognize the lack of system resources and try to save some things in a swap file to make more memory available for active applications.
The swap file works as a memory, but is included on the computer's hard disk. When RAM is filled on the computer, the operating system will (or write) things to a computer of computers with computer replacement and release RAM for used programs. As the swap set continues to grow, it can be full. This causes the operating system to create warning messages that indicate that a swap file or virtual memory is full and users will be instructed to close some programs to release system resources, allowing the computer to work better. Many times the restart of the computer is the besta way to alleviate these warning messages.
If peripheral, such as a printer or disk drive is needed, the required hardware will send an interruption request (IRQ) to the CPU. IRQ is a signal that the peripheral device uses to inform the CPU that it needs to do something. Hardware sources are memory and CPU time used when peripheral devices such as printers, scanners and modems are used. Every time the user is access to one of these devices, the device sends the signal to the motherboard to interrupt the CPU to function. Once the desired tasks are completed, the device re -indicates that it is completed. These signals are known as interruption requirements (IRQ) and each device has a specific channel or set of channels that can be used to communicate with the motherboard. If all channels are used for the specified device, the device cannot work. Each IRQ channel can only use one device or have one device assigned to itNumerous system. This helps the motherboard to know which device should expect which IRQS. System resources are monitored by the computer operating system to ensure that the computer is running as effectively as possible, given the resources available at any time.