Periodic health checks can help ensure that your Unix systems are going to be available when they’re needed most. In this post, we’re going to look at some aspects of performance that should be included in your system check-ups and some handy commands that will provide you with some especially useful insights.
Probably the most obvious health check for a Unix/Linux system is to take a look at the CPU load on a system. This is the heartbeat of a Unix system. A healthy system will have CPU power to spare. And one of the best commands for giving you a quick and easy view of how hard your CPU is working is the top command. There are a number of measurements to focus on when you use the command.