Performance – Learning to Learn

ZFS: Setting up ZFS storage on Ubuntu

If you are new to ZFS, I would advise doing a little bit of research first to understand the fundamentals. Jim Salter’s articles on storage and ZFS are very recommended. https://arstechnica.com/information-technology/2020/05/zfs-101-understanding-zfs-storage-and-performance/ The examples below are to create a pool from a single disk, with separate datasets used for network backups. In some examples, I might… Read More »

Linux: Initiating a CPU backtrace

Sometimes a process is taking a lot of CPU time and it isn’t clear what the cause is. For example, at times it is common to see the kworker process consuming a lot of CPU. kworker is a placeholder process for kernel worker threads. These threads perform most of the actual processing for the kernel… Read More »