drgn: How the Linux Kernel Team at Meta Debugs the Kernel at Scale (Meta)

The "Meta for Developers" blog has anintroduction to the drgn kernel debugger.

drgn (pronounced dragon") is a debugger that exposes the types andvariables in a program for easy, expressive scripting inPython. The Linux kernel team at Meta originally built drgn to makeit easier to investigate the kinds of difficult Linux kernel bugsthat the team encounters at Meta. The team has since added furtheruse cases for it, like monitoring and userspace memory profiling.

LWN reported on drgn in 2019.