FreeBSD DTrace scripts

Useful DTrace scripts for FreeBSD

This repository contains various useful, ready-to-use DTrace scripts.

All scripts require root permissions.

User stacks

In order to allow DTrace to show meaningful user stacks, you need:

• to add ustack(); call to the corresponding probe script

• to have these lines in /etc/make.conf:

  ## allow DTrace stack trace to pick up stack

  STRIP=

  CFLAGS+=-fno-omit-frame-pointer

  CXXFLAGS+=-fno-omit-frame-pointer

  CPPFLAGS+=-fno-omit-frame-pointer

• to have proper symbols in the binaries by rebuilding the ports: portupgrade -f {port-name}