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Detailed guide to viewing CPU information under Linux
In the Linux operating system, it is very important to understand the details of the CPU, whether for system optimization, troubleshooting, or hardware upgrades. This article will provide you with multiple methods to view CPU information under Linux, combined with code examples and in-depth analysis to help you better understand how each method works.
1. Use the /proc/cpuinfo file
/proc/cpuinfois a virtual file that provides us with detailed information about the CPU. We can use catthe command to view its contents.
cat /proc/cpuinfo
This will display all the details of the CPU such as model, number of cores, number of threads, etc.
For example, you might see part of the following output:
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 158
model name : Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz
This tells us that the current system's CPU is an Intel Core i7-8750H, which has a base frequency of 2.20GHz.
As Bjarne Stroustrup said in "The C++ Programming Language": "Knowledge is power". By looking at it /proc/cpuinfo, we can gain a lot of knowledge about the CPU to better optimize and manage our system.
2. Use lscpu command
lscpuIs a command specifically used to display CPU architecture information.
lscpu
The output of this command will provide detailed information about the CPU, including its architecture, number of cores, number of threads, cache size, etc.
For example:
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 8
On-line CPU(s) list: 0-7
Thread(s) per core: 2
Core(s) per socket: 4
Socket(s): 1
This tells us that the current system is a 64-bit architecture with 8 logical CPUs and 2 threads per core, for a total of 4 cores and 1 socket.
3. Use hwinfo command
hwinfois a very powerful command that can display all hardware information, including CPU.
hwinfo --cpu
This will display detailed information about the CPU, including its model, frequency, cache size, etc.
For example:
Model: "Intel Core i7-8750H"
Clock: 2200 MHz
Cache: 9216 KB
This tells us that the current system's CPU is an Intel Core i7-8750H, which has a base frequency of 2.20GHz and a cache size of 9216KB.
Summarize
Linux provides several methods to view CPU information, each with its own unique advantages. Which method you choose depends on your specific needs and preferences. Hopefully this article will help you better understand and use these tools to better manage and optimize your system.
When exploring the rationale behind these commands, we can delve into the source code of the Linux kernel. For example, the information is generated /proc/cpuinfoby the kernel files. fs/proc/cpuinfo.cThis in-depth analysis not only helps us better understand how commands work, but also provides insights into the design of the Linux kernel.
Conclusion
In our programming learning journey, understanding is an important step for us to move to a higher level. However, mastering new skills and ideas always requires time and persistence. From a psychological point of view, learning is often accompanied by constant trial and error and adjustment, which is like our brain gradually optimizing its "algorithm" for solving problems.
This is why when we encounter mistakes, we should view them as opportunities to learn and improve, not just as annoyances. By understanding and solving these problems, we can not only fix the current code, but also improve our programming skills and prevent making the same mistakes in future projects.
I encourage everyone to actively participate and continuously improve their programming skills. Whether you are a beginner or an experienced developer, I hope my blog will be helpful on your learning journey. If you find this article useful, you may wish to click to bookmark it, or leave your comments to share your insights and experiences. You are also welcome to make suggestions and questions about the content of my blog. Every like, comment, share and attention is the greatest support for me and the motivation for me to continue sharing and creating.
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