Course Intermediate  11447

Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.

Course Advanced  17735

Course Introduction："Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.

Course Advanced  11438

Course Introduction："Brothers Band Front-end Example Display Video Tutorial" introduces examples of HTML5 and CSS3 technologies to everyone, so that everyone can become more proficient in using HTML5 and CSS3.

Course Introduction：Identifying the Source of Additional Threads in Windows 10Despite the simplicity of a test program with a single main thread, Windows 10...

2024-10-26 comment 0  1058

Course Introduction：The pycharm debugging tutorial is as follows: 1. Preparation; 2. Run the code; 3. Enter Run/Debug mode; 4. Save run/debug configuration information; 5. Official operation; 6. Run the test program; 7. Select a tester; 8. Create a test program block; 9. Run the test code; 10. Debug the run; 11. Breakpoints; 12. Set breakpoints; 13. Code debugging; 14. Run again; 15. REPL, debug the program in the console interface.

2023-12-19 comment 0  2103

Course Introduction：In order to test the running time of a broken program, I specially wrote such a class and added comments. It mainly uses several functions, the array list function list(), and the string is divided into the array function explode() to obtain the timestamp and microprocessor. Microtime(), the number of seconds, divides the microseconds into arrays and converts them into variables for processing. The converted data is forced to be processed with floating point points, and the program duration is calculated for everyone to learn and refer to. If you have any good suggestions, please feel free to share them.

2017-08-21 comment 0  1533

Course Introduction：The author of this article uses a sample program to show how to improve performance by optimizing the process of reading and writing data in Linux pipelines. Ultimately, the throughput increased from the initial 3.5GiB/s to 65GiB/s. Although this is just a small example, it involves many knowledge points, including zero-copy operations, ring buffers, paging and virtual memory, synchronization overhead, etc. The article also analyzes concepts such as splicing, paging, and virtual memory address mapping in the Linux kernel from the source code level. The article introduces these concepts from shallow to deep, layer by layer, focusing on pipeline read and write performance optimization. I believe it will be beneficial to developers of high-performance applications or Linux kernels. This article will study Unix management through repeated optimization of a test program.

2024-02-11 comment 0  1182

Course Introduction：According to news from this website on July 30, Microsoft today announced that it has brought a "switch hold" function to users of the Xbox II Elite Controller Insider test program. This function is similar to the "sticky keys" in Windows systems, making it easier for people with disabilities to use the controller. When it comes to "sticky keys", friends on this site should be familiar with it. This function can be turned on by pressing the Shift key 5 times in Windows systems, so it is easier to accidentally trigger it when playing games. In fact, this function is mainly designed for people with disabilities. After turning on the relevant functions, the user does not need to press two keys at the same time to achieve the key combination effect (just press the previous key first, and then press the other key). This is convenient for some users who are unable to press multiple keys at the same time due to physical reasons. And on the Xbox controller side

2024-07-30 comment 0  1169