Know the server parameters, take you one by one to know these parameters

When people use computers frequently, they may pay more attention to the problems of the system or the computer itself. Few users will understand how the server is going. Today, we will know each other and sort out the twelve parameters. Specific explanation, I hope everyone can help after reading.

1, server processor frequency

The server processor frequency is also called the clock frequency, the unit is MHz, used to indicate the CPU speed. CPU's main frequency = FSB & times; multiplier. Many people think that the clock speed determines the speed of the CPU, which is not only one-sided, but also for the server, this understanding has also deviated. So far, there is no definitive formula to achieve the numerical relationship between the main frequency and the actual computing speed. Even the two major processor manufacturers Intel and AMD have great controversy at this point. We are from Intel. The development trend of the products, it can be seen that Intel is very focused on strengthening its own frequency development. Like other processor manufacturers, some people have used a fast 1G Transmeta to compare, its operating efficiency is equivalent to 2G Intel processor.

Therefore, the CPU's main frequency is not directly related to the actual computing power of the CPU. The main frequency indicates the speed at which the digital pulse signal oscillates in the CPU. In Intel's processor products, we can also see examples of this: the 1 GHz Itanium chip can behave almost as fast as the 2.66 GHz Xeon/Opteron, or the 1.5 GHz Itanium 2 is about as fast as the 4 GHz Xeon/Opteron. The CPU's operating speed depends on the performance of all aspects of the CPU's pipeline.

Of course, the main frequency is related to the actual computing speed. It can only be said that the main frequency is only one aspect of CPU performance, and does not represent the overall performance of the CPU.

2, server front side bus (FSB) frequency

Front side bus (FSB) frequency (ie bus frequency) is directly affecting the direct data exchange speed between CPU and memory. There is a formula that can be calculated, that is, data bandwidth = (bus frequency & times; data bandwidth) /8, the maximum bandwidth of data transmission depends on the width and transmission frequency of all simultaneously transmitted data. For example, the current support for 64-bit Xeon Nocona, the front side bus is 800MHz, according to the formula, its data transmission maximum bandwidth is 6.4GB /sec.

The difference between the FSB and the front side bus (FSB) frequency: the speed of the front side bus refers to the speed of data transmission, and the FSB is the speed of synchronous operation between the CPU and the main board. That is to say, the 100MHz FSB specifically refers to the digital pulse signal oscillating 10 million times per second; and the 100MHz front side bus refers to the acceptable data transfer amount per second CPU is 100MHz & times; 64bit÷ 8Byte/bit = 800MB/s.

In fact, the appearance of the "HyperTransport" architecture has changed the frequency of the front-side bus (FSB) in this practical sense. Before we knew that the IA-32 architecture must have three important components: the memory controller Hub (MCH), the I/O controller Hub and the PCI Hub, and the typical Intel chipset Intel 7501 and Intel7505 chipset, which are dual-strong. The processor is tailor-made, and the MCH it contains provides a front-side bus with a frequency of 533MHz for the CPU. With DDR memory, the front-side bus bandwidth can reach 4.3GB/sec. However, as the performance of the processor continues to increase, it brings many problems to the system architecture.

And the "HyperTransport" architecture not only solves the problem, but also increases the bus bandwidth more effectively. For example, the AMD Opteron processor, the flexible HyperTransport I/O bus architecture allows it to integrate the memory controller. The processor does not exchange data with the memory directly through the system bus to the chipset. In this case, the front side bus (FSB) frequency is not known in the AMD Opteron processor.