What is computer multithreading?

Multi-threading refers to the technology to realize the concurrent execution of multiple threads from software or hardware, and computer multi-threading refers to a computer with multi-threading capabilities that can execute more than one thread at the same time due to hardware support. Threads, thereby improving overall processing performance.

#A process is an activity in a computer regarding a certain data collection. It is the basic unit of resource allocation in the system and the basis of the computer structure. In the early process-oriented computer design structure, the process was the most basic execution entity of the program. A thread is the smallest unit that the operating system can perform operation scheduling. A process is a container for threads, a program is a collection of instructions, data and their organization, and a thread is the entity of the program.

#A process can be understood as a program unit that can run independently. A process is composed of one or more threads. Each thread is an execution path in the process.

Computers with multi-threading capabilities can execute more than one thread at the same time due to hardware support, thus improving overall processing performance. Systems with this capability include symmetric multiprocessors, multicore processors, and chip-level multiprocessing or simultaneous multithreading processors.

What are the benefits of using multi-threading?

There are many time-consuming operations during the execution of a program, such as database reading and writing, disk IO operations, etc. It is very time-consuming. If you use a single thread, you must wait for these operations to be completed before performing other operations. Using multi-threading, you can put the time-consuming operations in the background and continue to execute other operations at the same time. To improve efficiency, to be precise, it means to increase CPU usage. For a single-core CPU, it is not used all the time. For example, when performing IO operations, IO operations are time-consuming. When reading the disk, The CPU is in a waiting state and is not performing any operations. At this time, we can use the waiting time of the CPU to perform other operations, thereby improving efficiency.

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