An overview of the most important changes in Linux kernel 6.19 — Live Update, the new listns() syscall, Btrfs and ext4 improvements, HDR, io_uring, and Rust in the kernel.

btop is a modern resource monitor with a beautiful TUI interface. Installation, configuration, comparison with htop, and practical tips.

How to use ftrace and trace-cmd to trace function calls inside the Linux kernel. Configuration, usage examples, and performance diagnostics.

A review of the 5 essential Linux performance monitoring tools: top, htop, vmstat, iostat, and ss. How to read CPU, memory, disk, and network metrics.