在线上服务器观察线上服务运行状态的时候，绝大多数人都是喜欢先用 top 命令看看当前系统的整体 cpu 利用率。例如，随手拿来的一台机器，top 命令显示的利用率信息如下 这个输出结果说简单也简单，说复杂也不是那么容易就能全部搞明白的。例如： 问题 1 ...

Before diving into the tools themselves, it's crucial to understand the key metrics that indicate the health of a Linux system. These include CPU utilization, memory usage, disk activity, and network ...

Linux is a powerful and flexible operating system, widely used in servers, embedded systems, and even personal computers. However, even the best-configured systems can face performance bottlenecks ...

IT之家 3 月 8 日消息，据科技媒体 Phoronix 昨天报道，Linux 的 event poll (epoll) 代码可实现高效的 I/O 多路复用，如今部分开发者已经在 7.0 内核中加入一项新优化，目前已经合并到内核。 据报道，谷歌员工 Eric Dumazet 对 eventpoll 的 epoll_put_uevent()代码进行了调整，将其 ...

Monitoring, anticipating, and reacting to server load is a full time job in some organizations. Unexpected spikes in resource usage can indicate a software or hardware problem. Gradual increases over ...