memory locking

简明释义

存储闭锁

英英释义

例句

1.Database servers often use memory locking to maintain performance by keeping frequently accessed data in memory.

数据库服务器通常使用内存锁定来通过将频繁访问的数据保持在内存中来维持性能。

2.In real-time systems, memory locking ensures that critical tasks have guaranteed access to the necessary memory resources.

在实时系统中，内存锁定确保关键任务能够保证访问所需的内存资源。

3.When a system experiences high load, memory locking can prevent certain processes from being swapped out to disk.

当系统经历高负载时，内存锁定可以防止某些进程被换出到磁盘。

4.In computer programming, memory locking is crucial for ensuring that important data remains in RAM during critical operations.

在计算机编程中，内存锁定对于确保重要数据在关键操作期间保持在RAM中至关重要。

5.To optimize performance, some applications implement memory locking to keep their working set in physical memory.

为了优化性能，一些应用程序实现了内存锁定，以保持其工作集在物理内存中。

作文

In the realm of computer science, particularly in the field of operating systems and memory management, the term memory locking refers to a technique that prevents certain portions of memory from being swapped out to disk. This is particularly important for applications that require high performance and low latency, such as real-time systems or critical applications that cannot tolerate delays caused by disk I/O operations. When an application locks its memory, it ensures that the data remains in the physical RAM, thus providing faster access times. The process of memory locking can be crucial in various scenarios. For instance, consider a medical imaging system that processes images in real time. If the system were to swap parts of its working memory to disk, it could introduce unacceptable delays, potentially compromising patient care. By employing memory locking, the application can guarantee that the necessary data is always available in RAM, allowing for swift processing and response times.Moreover, memory locking can also enhance security. In environments where sensitive information is processed, such as financial or personal data, locking memory can prevent unauthorized access to that data during the time it is being used. This is because when memory is locked, it is less likely to be paged out to disk, where it could be exposed to other processes or users.However, while memory locking has its advantages, it is not without its drawbacks. One of the significant concerns is that it can lead to inefficient use of system resources. When too much memory is locked, it can cause the system to run out of available physical memory, leading to performance degradation for other applications. Therefore, developers must be judicious in their use of this technique, ensuring that they only lock memory that is absolutely necessary for performance or security reasons.In addition, the implementation of memory locking varies across different operating systems. For example, in Unix-like systems, functions such as `mlock()` and `munlock()` are used to lock and unlock memory pages. In contrast, Windows provides similar functionality through the `VirtualLock()` function. Understanding these differences is essential for developers working in cross-platform environments.In conclusion, memory locking is a powerful tool in the arsenal of software developers, particularly in fields requiring high performance and security. By keeping critical data in RAM and preventing it from being swapped to disk, applications can achieve better responsiveness and maintain the integrity of sensitive information. However, caution must be exercised to avoid overusing this capability, as it can lead to resource contention and overall system inefficiency. As technology continues to evolve, the strategies surrounding memory locking will likely adapt, offering new opportunities and challenges for developers in managing memory effectively.

在计算机科学领域，特别是在操作系统和内存管理方面，术语memory locking指的是一种技术，它防止某些内存部分被交换到磁盘。这对于需要高性能和低延迟的应用程序尤为重要，例如实时系统或无法容忍因磁盘I/O操作而造成延迟的关键应用程序。当一个应用程序锁定其内存时，它确保数据保留在物理RAM中，从而提供更快的访问时间。memory locking的过程在各种场景中都至关重要。例如，考虑一个实时处理图像的医疗成像系统。如果该系统将其工作内存的一部分交换到磁盘，就可能引入不可接受的延迟，从而可能危及病人的护理。通过采用memory locking，该应用程序可以保证所需的数据始终可用在RAM中，从而实现快速处理和响应时间。此外，memory locking还可以增强安全性。在处理敏感信息的环境中，例如金融或个人数据，锁定内存可以防止在使用期间对这些数据的未经授权访问。这是因为当内存被锁定时，它不太可能被换出到磁盘，从而可能暴露给其他进程或用户。然而，尽管memory locking有其优点，但也并非没有缺点。一个主要的担忧是，它可能导致系统资源的低效使用。当锁定的内存过多时，可能会导致系统耗尽可用的物理内存，从而导致其他应用程序的性能下降。因此，开发人员必须谨慎使用这一技术，确保只锁定绝对必要用于性能或安全原因的内存。此外，memory locking的实现因不同操作系统而异。例如，在类Unix系统中，使用`mlock()`和`munlock()`函数来锁定和解锁内存页。相比之下，Windows通过`VirtualLock()`函数提供类似的功能。了解这些差异对于在跨平台环境中工作的开发人员至关重要。总之，memory locking是软件开发人员工具箱中的一项强大工具，尤其是在需要高性能和安全性的领域。通过将关键数据保留在RAM中并防止其被交换到磁盘，应用程序可以实现更好的响应能力，并维护敏感信息的完整性。然而，必须谨慎行事，以避免过度使用此功能，因为这可能导致资源争用和整体系统效率低下。随着技术的不断发展，围绕memory locking的策略可能会适应，为开发人员在有效管理内存方面提供新的机会和挑战。