What Is the System Idle Process in a CPU?
The System Idle Process is a process that is used by the Windows operating system as a power saving feature. This process was included in Windows NT-based operating systems such as Windows 2000 and Windows XP. Windows implements the System Idle Process at the point when there are no instructions sent to the computer's processor.
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Task Manager
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View the System Idle Process by viewing the Windows Task Manager. The Task Manager can be opened by pressing "CTRL" + "ALT" + "DEL" on the keyboard or typing "taskmgr" into the Run option from the "Start" menu. The System Idle process will be located at the bottom of the list of currently running processes. You can view various types of information such as CPU and Memory Usage.
Usage
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When viewing information about the System Idle Process you will notice that it appears to be using a great deal of CPU resources or usage. This is actually a bit deceptive, because the System Idle Process actually does not need much CPU usage to run.
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Free Resources
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What is actually displayed in the Task Manager is the amount of CPU usage that is currently available to the system. Since it is a system process, it will require a certain amount of memory to run. The actual amount of memory usage can vary but it is generally around 28K to 30K.
Programs
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There are many different types of programs that will utilize a system's idle time in order to perform certain types of tasks. Programs that make use of CPU idle time are designed not to interfere with programs that run at normal priority.
Performance
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If you run a program that utilizes system idle time your system may seem busier than normal. This is because programs that use CPU idle time are actually making the CPU perform useful tasks. This can cause the CPU to use more power because it will not be able to utilize any power-saving features.
Warnings
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The System Idle Process should not be terminated because it is needed by the operating system to run correctly. When you terminate the System Idle Process you could potentially cause problems that need to utilize idle process time.
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