Branch predictor: How many "if"s are too many? Including x86 and M1 benchmarks!
May 06, 2021 2:00PM
Is it ok to have if clauses that will basically never be run? Surely, there must be some performance cost to that......
How to execute an object file: Part 2
April 02, 2021 12:00PM
Linux Compiler Programming Software Deep DiveContinue learning how to import and execute code from an object file. This time we will investigate ELF relocations....
How to execute an object file: Part 1
March 02, 2021 12:00PM
Linux Compiler Programming Software Deep DiveEver wondered if it is possible to execute an object file without linking? Or use any object file as a library? Follow along to learn how to decompose an object file and import code from it along the way....
Diving into /proc/[pid]/mem
October 27, 2020 12:00PM
Deep Dive Programming LinuxA few months ago, after reading about Cloudflare doubling its intern class, I quickly dusted off my CV and applied for an internship. Long story short: now, a couple of months later, I found myself staring at Linux kernel code and adding a pretty cool feature to gVisor....
Raking the floods: my intern project using eBPF
September 18, 2020 12:00PM
eBPF Linux UDP ProgrammingSYN-cookies help mitigating SYN-floods for TCP, but how can we protect services from similar attacks that use UDP? We designed an algorithm and a library to fill this gap, and it’s open source!...
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