What does multithreading mean?

Thread is the smallest unit that the operating system can perform calculation scheduling. It is included in the process and is the actual operating unit in the process. Multi-threading refers to the concurrent execution of multiple threads from software or hardware. With technology, computers with multi-threading capabilities can execute more than one thread at the same time due to hardware support, thus improving overall processing performance.

Thread is the smallest unit that the operating system can perform operation scheduling; it is included in the process and is the actual operating unit in the process.

Multi-threading refers to the technology that realizes the concurrent execution of multiple threads from software or hardware. Computers with multi-threading capabilities have hardware support that allows them to execute more than one thread at the same time, thereby improving overall processing performance.

Simply put: a thread is a single sequential control process in a program; and multi-threading means running multiple threads at the same time in a single program to complete different tasks.

Multi-threading is to complete multiple tasks simultaneously, not to improve operating efficiency, but to improve resource usage efficiency to improve system efficiency. Multithreading is implemented when multiple tasks need to be completed at the same time.

Advantages and disadvantages of multi-threading

Advantages:

1) Multi-threading technology can speed up the running speed of the program and make the response speed of the program faster Fast, because the user interface can always be active while doing other work

2), you can put the tasks in the program that take a long time to the background for processing, and perform other operations at the same time to improve efficiency

3). When there are no tasks currently being processed, the processor time can be given to other tasks

4). Different parts of the same program can be executed concurrently, freeing up some precious resources such as memory. Occupancy, etc.

5), you can stop the task at any time

6), you can set the priority of each task separately to optimize performance

Disadvantages:

1) Because multi-threading needs to open up memory, and thread switching takes time, it will consume a lot of system memory.

2) The termination of threads will have an impact on the program

3) Since there is shared data between multiple threads, thread deadlock is prone to occur

4) Managing threads requires additional CPU overhead. The use of threads will bring additional burden of context switching to the system.

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