Fernando's Blog

All posts

12 Jun, 2026 The cost of an 8kb Postgres read
03 Apr, 2026 What /proc sees in 19 MiB
21 Mar, 2026 Where did 400 MiB go?
11 Dec, 2025 108,725 forks
30 Oct, 2025 Breaking what a program is
08 Apr, 2025 Sigterm a D state process
22 May, 2024 Builtins and source

About me

I’m an SRE working on performance, reliability and infrastructure. I enjoy measuring things. This blog is about what I find interesting in computers - an idea, a specific number, a failure mode.

Feel free to reach me at frn@frn.sh or linkedin

Others

I’ve been curating a list of computer science papers, blog posts, and videos.