SystemTap Tips

SystemTap.md

• SystemTap
• Getting Started with SystemTap: A introduction with simple examples. It is simple and thus good for beginners.

Install SystemTap in Ubuntu 14.04:

sudo apt-get install systemtap
sudo apt-get install gcc
sudo apt-get install linux-headers-$(uname -r)

Test the installation with the HelloWorld example:

sudo stap -e 'probe begin { printf("Hello, World!\n"); exit() }'

You should see Hello, World! is emitted in the console.

---

Install debug symbols file:
Save the following codes as run.sh, and run: sh run.sh

codename=$(lsb_release -c | awk  '{print $2}')
sudo tee /etc/apt/sources.list.d/ddebs.list << EOF
deb http://ddebs.ubuntu.com/ ${codename}      main restricted universe multiverse
deb http://ddebs.ubuntu.com/ ${codename}-security main restricted universe multiverse
deb http://ddebs.ubuntu.com/ ${codename}-updates  main restricted universe multiverse
deb http://ddebs.ubuntu.com/ ${codename}-proposed main restricted universe multiverse
EOF

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys ECDCAD72428D7C01
sudo apt-get update
sudo apt-get install linux-image-$(uname -r)-dbgsym

Test the installation with this example which will print hello world to the console when the system call sys_call is called.:

sudo stap -e 'probe kernel.function("sys_open") {log("hello world") exit()}'

Refs: Install SystemTap in Ubuntu 14.04