中央处理器 (English abbreviation: CPU) is one of the major computer equipment, the main function of computer instructions and data interpretation processing computer software. Programmable computer programming mainly refers to 中央处理器. Before the 1970s, is constituted by a plurality of separate units 中央处理器, was developed by an integrated circuit manufactured 中央处理器 these elements is called a highly shrinkable microprocessor, which separated the most complex circuit may 中央处理器made powerful single tiny functional units.
The main function of cpu
internal structure can be divided into cpu control unit, a logic unit and a storage unit of three parts. the cpu works as a plant for processing the product: starting material entering the plant (command), via the distribution department materials (control means) scheduling assignment, it is sent to the production line (logical unit).
1. Processing instructions
English Processing instructions, which refers to the order of execution of the control program instructions. There is a strict order of between instruction in the program must be in strict accordance with the provisions of the order of program execution, in order to ensure the correctness of computer systems work.
2. Perform operation
English Perform an action, an instruction function is often implemented by a computer performs a series of operations in the member. CPU according function instruction, generates a corresponding operation control signal sent to the respective members, thereby controlling these components operates according to the request command.
3. Control Time
English Control time, the control time is the time on the time of various operations embodiments. During the execution of an instruction, at what time do what should be strictly controlled. Only in this way, the computer can work smoothly.
4. Data processing
I.e., the data arithmetic and logical operations, or other information processing. Its main function is to explain the computer instructions and data processing computer software, and executes the instructions.
Cloud server CPU
What is the difference between a home on the CPU and CPU computing power on the cloud server?
Well, the server CPU speed is equivalent to 100km / h, 100-seat bus. Speed may not so fast, but win more seats in, hundreds of people per hour can be transported to a place 100 km away, a strong capacity. In addition professional drivers, management in place, the bus company centralized management, maintenance in place in time, even if the car rough point, is not prone to failure. Even if a fault, there are other buses spare timely replacement.
Like household CPU speed 200km / h, 5-seat cars. Speed quickly, but fewer seats 10 people per hour can only be shipped to place 100 km away (5 * 2), low capacity. The driver uneven level of maintenance is not necessarily so in place, may fail in bursts, then only hit the car.
Cloud server CPU run over how to do?
If you use the new Core ECS cloud server, if the speed of the slow emergence of service, or ECS suddenly disconnected example, consider whether there is a problem server bandwidth and CPU run over or run high. Linux system, you can troubleshoot as follows:
Positioning problem. Find the impact of bandwidth and CPU run over or run a high specific process.
Analysis and processing. Investigation affect bandwidth and CPU run over or run high process is normal, and the classification process.
For a normal process: You need to optimize the program or upgrading a server configuration.
For abnormal process: You can manually killing the process, you can use third-party security tools to killing.
Of course, if you are pre-created alarm task, when the bandwidth and CPU run over or run high, the system will automatically alarm reminders. If the cloud server CPU ECS Linux system continued to run high, it will impact on system stability and business operations. Configuration described herein and have been tested in CentOS 6.5 64-bit operating system. Other types and versions of operating system configurations may vary.
CPU run over or run the problem of high positioning
Ruoyun server's CPU ECS continued to run high, and affect the stability of the system will run the business. Linux system, see the process commonly used commands are as follows:
ps aux
ps -ef
top
Linux systems usually use the top command to view the system load problem, and locate the process consumes a lot of CPU resources.