LINUX Server Performance
Managing performance on Linux systems can be made easier with a few commands. Learn how to use five commands: top, vmstat, iostat, free, and sar to manage performance on your Linux server. Managing performance on Linux hosts is often seen as a black art. Many system administrators rarely venture beyond the simple or resort to throwing hardware, more memory and more CPU, at perceived performance problems. The use of a few simple commands, however, can reveal a huge amount of detail about your host and may help you resolve your performance issues quickly and easily. 1. top The first stop for many system administrators, the top command shows the current tasks being serviced by the kernel as well as some broad statistical data about the state of your host. By default, the top command automatically updates this data every five seconds (this update period is configurable). The top command is also incredibly fully featured (albeit that no one uses half the features availabl...