Has golang canceled gc?

The garbage collection mechanism of the Go language is considered to be one of its greatest advantages. It allows developers to not worry about manually reclaiming memory. However, recently some voices have begun to call for the cancellation of the garbage collection mechanism of the Go language to achieve higher performance. This article will discuss this phenomenon and explore the reasons behind it and possible solutions.

First of all, we need to review the garbage collection mechanism of Go language. In Go, garbage collection (GC) is automatically triggered by the runtime system (runtime). When an object is no longer referenced, the GC will mark it as garbage and release the memory space it occupied. This allows Go to achieve C-like performance without developers having to manually manage memory.

However, some people believe that this mechanism of automatically managing memory will introduce additional performance overhead. While most modern computers have multiple cores, Go's GC is single-threaded and therefore can only utilize a portion of the CPU. This means that for large applications and workloads that require high performance, the GC mechanism can become a performance bottleneck.

In addition, GC also introduces unpredictable delays in the runtime of the program. This is because the GC mechanism needs to traverse the entire heap memory, which may take a long time and cause the operating system to suspend the execution of the program. This pause affects the overall performance and response time of the application, so in some cases GC pauses need to be minimized or avoided entirely.

In order to deal with these problems, some people suggest canceling the garbage collection mechanism of the Go language and using manual memory management to achieve higher performance. This method of manually managing memory is already well established in low-level languages ​​such as C and C++. These languages ​​allow developers to freely allocate and free memory, thereby controlling program performance and behavior.

However, canceling the GC mechanism is not an easy solution. It requires developers to manually manage memory and take additional steps to avoid memory leaks and other problems. This also requires developers to have high skills and experience to ensure the stability and reliability of the program.

In addition, since the Go language is a high-level language, canceling the GC mechanism may also weaken its ease of use and readability. Using manual memory management requires longer code and more comments, making the program more difficult to understand and maintain. This may lead to more errors and defects, affecting the quality and reliability of the program.

In order to solve these problems, some Go developers have proposed another possible solution: using a concurrent garbage collection mechanism. This mechanism takes advantage of modern multi-core computers to handle garbage collection tasks through multi-threads, thereby improving GC performance and throughput. This approach improves program performance and response time while keeping garbage collection automated.

Now, the Go language has made some optimizations in the GC, allowing the program to run normally under higher loads. These optimizations include adjusting GC modes and parameters, and using compression algorithms to reduce memory footprint. In addition, the Go development community is constantly researching more optimization methods to improve program performance and stability.

In short, canceling the garbage collection mechanism of the Go language may improve the performance of the program, but it will also introduce more problems and challenges. In contrast, using a concurrent garbage collection mechanism seems to be a better choice, which can improve the performance and response time of the program while maintaining automation. In any case, the pursuit of high performance and stability should be the key goals of Go language developers.

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