Recently, I encountered a strange issue when executing the binary file ‘protoc’, which reported the error no such file or directory: ./protoc. The file was clearly there, yet it kept reporting this error. Could it be a system bug? Whenever encountering bizarre issues, we tend to suspect the operating system or compiler, but often we end up being the fool. This time was no exception; after continuous attempts, I discovered that this was actually a system feature.

Strange error: No such file

In fact, if you’re a novice encountering this problem for the first time, you’d be at a loss, with no idea how to troubleshoot. Before continuing to read, you might want to guess what could cause this error when executing a binary file.

For C/C++ programmers, memory leak is a perennial issue. There are many methods to troubleshoot memory leaks, such as using tools like valgrind, gdb, asan, tsan, etc., but each of these tools has its limitations. For example, valgrind slows down program execution, gdb requires understanding of the code and manual breakpoint setting, while asan and tsan require recompiling the program. For complex services that are already running, these methods are not very convenient.

Memory leak flame graph obtained through eBPF analysis

Fortunately, with eBPF, we can analyze memory leak problems without recompiling the program and with minimal impact on program execution speed. The power of eBPF is evident, but eBPF is not a silver bullet. There are still many issues to be resolved when using it to analyze memory leaks. This article will discuss the common problems encountered in eBPF-based detection.

ChatGPT burst onto the scene in 2023, and in just over half a year, it has become proficient in understanding and generating text, comprehending and creating beautiful images, and interpreting and writing code, bringing endless possibilities to various industries. From initial popularity in tech circles to now attracting interest from an increasing number of people around us, it seems we are not far from the AI era.

However, some people are skeptical about ChatGPT’s popularity, believing it’s just a temporary trend that won’t significantly impact our lives. So, how popular is ChatGPT really? How deep is its penetration? This article will discuss ChatGPT’s penetration from three aspects: search trends, application scenarios, and user characteristics.

ChatGPT's Penetration