Shulou(Shulou.com)06/02 Report--

The editor will share with you what the data in cache is. I hope you will get something after reading this article. Let's discuss it together.

Within CPU, the data in cache is a mapping of the contents of the "memory" section. Cache memory is a kind of memory which is located between CPU and memory with small capacity but high speed. While CPU waits for a certain period of time to access data directly from memory, Cache can save some of the data that CPU has just used or recycled.

Within CPU, the data in cache is a mapping of the contents of the "memory" section.

Cache memory, a cache memory in a computer, is a small but high-speed memory located between the CPU and the main memory DRAM (Dynamic Random Access Memory). It is usually composed of SRAM (Static Random Access Memory static memory). It is a small but high-speed memory located between CPU and memory.

The speed of CPU is much higher than that of memory. When CPU directly accesses data from memory, it has to wait for a certain period of time, while Cache can save part of the data just used or recycled by CPU. If CPU needs to use this part of data again, it can be called directly from Cache, which avoids repeated access to data, reduces the waiting time of CPU, and improves the efficiency of the system. Cache is divided into L1Cache (first-level cache) and L2Cache (second-level cache). L1Cache is mainly integrated in CPU, while L2Cache is integrated on motherboard or CPU.

The function of Cache is to increase the rate of CPU data input and output. Cache has small capacity but fast speed, low memory speed but large capacity. By optimizing the scheduling algorithm, the performance of the system will be greatly improved, as if the storage system capacity is equivalent to memory and the access speed is similar to Cache.

Because of the need to ensure that the data cached in Cache is consistent with the content in memory, the write operation of Cache is more complex, such as direct write method, write back method and marking method.

After reading this article, I believe you have a certain understanding of "what is the data in cache". If you want to know more about it, you are welcome to follow the industry information channel. Thank you for reading!

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