arighi's blog

Recap Some time ago, I built a kernel scheduler in Rust, called scx_rustland . It runs entirely in user space, powered by sched_ext , a tec...

Ubuntu 25.04 Plucky Puffin now ships a linux-generic kernel based on 6.12 , which means that sched_ext is supported out of the box! 🎉...

Overview Booting short-lived virtual machines (VMs) can be a highly CPU-intensive workload. In scenarios like serverless computing, where b...

Overview Many kernel hackers and OS enthusiasts have long dreamed of designing and running a custom Linux scheduler. However, this has trad...

Overview The main bottleneck of scx_rustland , a Linux scheduler written in Rust, is the communication between kernel and user space. Even...