Performance Analysis

Overview In 2015, Brendan Gregg posted two great articles on Netflix blog: Linux Performance Analysis in 60 seconds, and Linux Perfomrance Tools. They have great value when I was in a urgency to spot performance issues. The articles cover the essential tools for performance troubleshooting, including: Check out load averages: w or uptime Print kernel … Read morePerformance Analysis

How memory usage adds up in Linux

There are too many metrics that describes some aspects about memory in Linux. Further to an old article on this site, where several concepts were discussed, this posting will make sense of those common metrics in Linux, CentOS as an example. The most fundamental command is free and my favourite switch is -h for human … Read moreHow memory usage adds up in Linux