In this talk, the speaker will start from the quick introduction into BPF and different python tools. It will be a live coding session where the speaker demonstrates how to implement, use, and how to monitor linux performance.

1. Dive into BPF tools
using python
Andrii Soldatenko
TVTime

2. Dive into BPF tools
using python
16 May 2020
Kyiv, Ukraine

4. Plan
• History of BPF
• BCC
• Demos
• Future reading
@a_soldatenko

5. Development is HARD:

6. Problem:

7. @a_soldatenko

8. History of
Berkley Packet Filter
• FIRST developed in 1992
• IN 2013 major rewrite
• IN 2014 included in Linux kernel
@a_soldatenko

9. What’s is BPF?
@a_soldatenko
🤔

10. BPF Compiler
Collection (BCC)
@a_soldatenko

11. @a_soldatenko
• BPF Compiler Collection
• https://github.com/iovisor/bcc
• Lead developer: Brenden Blanco
• Includes tracing tools
• Provides BPF front-ends:
• Python
• Lua
• C++
• C helper libraries
• golang (gobpf)

12. @a_soldatenko
BCC (C & Python)

13. @a_soldatenko
Linux Perf Analysis in 60s

14. @a_soldatenko
BCC installation

15. @a_soldatenko

16. @a_soldatenko
Hello World!

17. @a_soldatenko

18. @a_soldatenko

19. ubuntu@ip-172-31-43-94:~$ sudo /usr/share/bcc/tools/execsnoop
PCOMM PID PPID RET ARGS
sshd 14525 1025 0 /usr/sbin/sshd -D -R
sh 14527 14525 0
env 14528 14527 0 /usr/bin/env -i PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/
usr/bin:/sbin:/bin
run-parts 14528 14527 0 /bin/run-parts --lsbsysinit /etc/update-motd.d
00-header 14529 14528 0 /etc/update-motd.d/00-header
uname 14530 14529 0 /bin/uname -o
uname 14531 14529 0 /bin/uname -r
uname 14532 14529 0 /bin/uname -m
10-help-text 14533 14528 0 /etc/update-motd.d/10-help-text
50-landscape-sy 14534 14528 0 /etc/update-motd.d/50-landscape-sysinfo
grep 14535 14534 0 /bin/grep -c ^processor /proc/cpuinfo
bc 14538 14536 0 /usr/bin/bc
cut 14539 14537 0 /usr/bin/cut -f1 -d /proc/loadavg
date 14540 14534 0 /bin/date
landscape-sysin 14541 14534 0 /usr/bin/landscape-sysinfo
ldconfig 14542 14541 0 /sbin/ldconfig -p
ldconfig.real 14542 14541 0 /sbin/ldconfig.real -p
ldconfig 14543 14541 0 /sbin/ldconfig -p
ldconfig.real 14543 14541 0 /sbin/ldconfig.real -p
who 14545 14541 0 /usr/bin/who -q
50-motd-news 14546 14528 0 /etc/update-motd.d/50-motd-news
@a_soldatenko
BCC quick win

20. @a_soldatenko
Bcc Perf Check list

21. @a_soldatenko
Conclusion: 📝
- Why Performance Tools Need BPF?
- Now we can understand Linux better and
how to run you applications in prod
- Now we know where to start to use BPF
tools or write your own

22. @a_soldatenko
Future Reading 🐝:
https://github.com/iovisor/bcc/blob/master/docs/reference_guide.md

23. @a_soldatenko
Future Reading 🐝:
https://github.com/iovisor/bcc/blob/master/docs/reference_guide.md
https://github.com/iovisor/bcc/blob/master/docs/
tutorial_bcc_python_developer.md

25. Thank You
@a_soldatenko

26. Telegram channel
https://t.me/golang_for_two

27. Questions
? @a_soldatenko