Hey there! I'm a kernel developer and SRE, primarily working on Linux kernel memory management. I work at Facebook as part of the Linux Kernel team, and am responsible for kernel-related developments that improve the overall reliability and performance of Facebook's user-facing products. In general, my drive is in conceiving, designing, and improving systems that make Facebook and the wider industry better.
Most of my active work revolves around making operating systems more efficient at scale, developing things like the Linux kernel, cgroups, systemd, and a number of other emerging technologies.
Outside of that, I dabble in photography and sim racing.
Popular articles
- In defence of swap: common misconceptions
- "1195725856" and other mysterious numbers
- The curious case of stalled squashfs reads
- Linux memory management at scale
More posts are available on the archive page.
Software
I am a creator, contributor, or maintainer of a number of projects, including:
- cgroup v2 — modern resource control and accounting
- clipmenu — a clipboard manager with a dmenu frontend
- dwm — dynamic window manager for X
- GNU bash — the GNU project's shell
- hypothesis — an advanced QuickCheck style testing library for Python
- Linux — a free and open-source OS kernel
- mack — an opinionated, fast music organiser
- mpdmenu — control mpd from dmenu
- mpv — videos on the command line
- nota — super simple daily logs with your $EDITOR + git
- oomd — next-generation OOM killer
- osquery — an OS instrumentation, monitoring, and analysis framework
- pass — the standard Unix password manager
- psi-notify — proactively detect machine oversaturation
- srt — a Python library to deal with SRT files
- systemd — a system and service manager for Linux
- taglib-rust — Rust FFI bindings for taglib
- the Pro Git book — a guide to Git and its internals
- tzupdate — update /etc/localtime automatically using geolocation
- xinput-toggle — tool to manipulate arbitrary xinput devices
- zsh — a highly feature-rich shell
You can find other projects on my GitHub, although if they're not on this list, I'm probably not actively developing or maintaining them.
Selected talks
- The future of Linux resource control — LISA
- Linux memory management at scale — SREcon/FOSDEM
- cgroupv2: Linux's new unified resource hierarchy — FOSDEM/DevOpsDays/ASG
- Lessons learned running SSL at scale — FOSDEM
- The Web Foundation model — University College London lecture
- Shell pitfalls and code smells — LVL.UP Kuala Lumpur
- Pragmatic minimalism as a software design tool — LVL.UP Kuala Lumpur
Other content on this domain
- Assorted technology-related articles
- Project quality dashboard
- Sim racing data/notes
- My old TF2 configs
- RYM profile export
- Old game miscellany
- Privacy policy