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DTrace+Ruby

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Avatar for Anuj Dutta Anuj Dutta
October 16, 2012
Technology
170
0

 DTrace+Ruby

An introduction to DTrace and it's current status in the Ruby world.

Avatar for Anuj Dutta

Anuj Dutta

October 16, 2012

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Transcript

  1. DTrace + Ruby LRUG 8th October 2012

  2. Anuj Dutta @andhapp Ruby Freelancer Anooj Dutta

  3. I've met Matz

  4. DTrace

  5. 2005

  6. Sun OS

  7. Mac OSX Pre-installed

  8. FreeBSD Pre-installed

  9. Linux Pre-installed

  10. sudo

  11. Static and Dynamic Instrumentation Framework

  12. None

  13. Static and Dynamic Instrumentation Framework

  14. Static and Dynamic Instrumentation Framework

  15. Static and Dynamic Instrumentation Framework

  16. Example sudo dtrace -n 'syscall::read:entry /pid == 12345/ { @num[execname]

    = count(); }'

  17. Example sudo dtrace -n 'syscall::read:entry /pid == 12345/ { @num[execname]

    = count(); }' Consumer

  18. Example Probe sudo dtrace -n 'syscall::read:entry /pid == 12345/ {

    @num[execname] = count(); }'

  19. Example sudo dtrace -n 'syscall::read:entry /pid == 12345/ { @num[execname]

    = count(); }' Clause

  20. Example sudo dtrace -n 'syscall::read:entry /pid == 12345/ { @num[execname]

    = count(); }' Predicate

  21. Available Probes varies across OS

  22. Use cases

  23. Enough DTrace We Ruby

  24. Ruby trunk

  25. function-entry object-create array-create hash-create and so on...

  26. I want my own PROBES

  27. ruby-usdt

  28. Activesupport:: Notifications

  29. rails-dtrace

  30. Use cases

  31. Unstable

  32. Future

  33. None
  34. None

  35. Thanks

  36. Questions?