Lightweight Linux tools for on-demand performance monitoring during load testing?
Solution 1:
- Some essential information can be obtained from OperatingSystemMXBean using JConsole or equivalent, you won't have to install anything
- The most lightweight tool of will be sar
- You can take a look at Sigar which has Java API so you can create a web app which will collect and display the metrics of your choice. It's also used under the hood of PerfMon Plugin for Apache JMeter load testing tool
- If you prefer more or less ready solution take a look at Monitorix