Thursday, January 31, 2019

Using the Linux Kernel and Cgroups to Simulate Starvation

When using a database like ArangoDB, it is also important to explore how it behaves once it reaches system bottlenecks, or which KPIs (Key Performance Indicators) it can achieve in your benchmarks under certain limitations. One can achieve this by torturing the system by effectively saturating the resources using random processes.

This, however, will drown your system effectively — it may hinder you from capturing statistics, debugging, and all other sorts of things you’re used to from a normally running system. The more clever way is to tell your system to limit the available resources for processes belonging to a certain cgroup.



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