Pedal to the Metal - Aftermath

Transcript

1. Pedal to the Metal Esteban Torres • Core Clients @

   SoundCloud • @esttorhe

2. Pedal to the Metal - AFTERMATH Esteban Torres • Core

   Clients @ SoundCloud • @esttorhe

3. Esteban Torres • Core Clients @ SoundCloud • @esttorhe

4. ! Esteban Torres • Core Clients @ SoundCloud • @esttorhe

5. Sequel Esteban Torres • Core Clients @ SoundCloud • @esttorhe

6. Esteban Torres • Core Clients @ SoundCloud • @esttorhe

7. Esteban Torres • Core Clients @ SoundCloud • @esttorhe

8. ⾠ Esteban Torres • Core Clients @ SoundCloud • @esttorhe

9. Context Esteban Torres • Core Clients @ SoundCloud • @esttorhe

10. Planning @ SoundCloud Esteban Torres • Core Clients @ SoundCloud

    • @esttorhe

11. the bet Esteban Torres • Core Clients @ SoundCloud •

    @esttorhe

12. Improve iOS launch time Esteban Torres • Core Clients @

    SoundCloud • @esttorhe

13. iOS branch Core Clients Esteban Torres • Core Clients @

    SoundCloud • @esttorhe

14. Esteban Torres • Core Clients @ SoundCloud • @esttorhe

15. Esteban Torres • Core Clients @ SoundCloud • @esttorhe

16. Impossibility Esteban Torres • Core Clients @ SoundCloud • @esttorhe

17. Check the code 1. Grab start timestamp 2. Grab end

    timestamp 3. Diff 4. Multiply by a 1000 5. Send Esteban Torres • Core Clients @ SoundCloud • @esttorhe

18. Check the code 1. Grab start timestamp 2. Grab end

    timestamp 3. Diff 4. Multiply by a 1000 5. Send Esteban Torres • Core Clients @ SoundCloud • @esttorhe

19. Over 5 seconds Esteban Torres • Core Clients @ SoundCloud

    • @esttorhe

20. 7,000,000 milliseconds Esteban Torres • Core Clients @ SoundCloud •

    @esttorhe

21. Esteban Torres • Core Clients @ SoundCloud • @esttorhe

22. context Esteban Torres • Core Clients @ SoundCloud • @esttorhe

23. App then Esteban Torres • Core Clients @ SoundCloud •

    @esttorhe

24. Esteban Torres • Core Clients @ SoundCloud • @esttorhe

25. App now Esteban Torres • Core Clients @ SoundCloud •

    @esttorhe

26. Esteban Torres • Core Clients @ SoundCloud • @esttorhe

27. Esteban Torres • Core Clients @ SoundCloud • @esttorhe

28. more context Esteban Torres • Core Clients @ SoundCloud •

    @esttorhe

29. Instruments Esteban Torres • Core Clients @ SoundCloud • @esttorhe

30. Esteban Torres • Core Clients @ SoundCloud • @esttorhe

31. 1. Startup Operations 2. ViewController 4. Profit?? Esteban Torres •

    Core Clients @ SoundCloud • @esttorhe

32. ! Esteban Torres • Core Clients @ SoundCloud • @esttorhe

33. Main thread Esteban Torres • Core Clients @ SoundCloud •

    @esttorhe

34. ! Esteban Torres • Core Clients @ SoundCloud • @esttorhe

35. ! Esteban Torres • Core Clients @ SoundCloud • @esttorhe

36. How about that ViewController Esteban Torres • Core Clients @

    SoundCloud • @esttorhe

37. even more context Esteban Torres • Core Clients @ SoundCloud

    • @esttorhe

38. Mirroring & you Esteban Torres • Core Clients @ SoundCloud

    • @esttorhe

39. ⚡" Esteban Torres • Core Clients @ SoundCloud • @esttorhe

40. What now !? Esteban Torres • Core Clients @ SoundCloud

    • @esttorhe

41. Total pre-main time: 2.0 seconds (100.0%) dylib loading time: 355.67

    milliseconds (17.0%) rebase/binding time: 1.3 seconds (63.5%) ObjC setup time: 186.10 milliseconds (8.9%) initializer time: 218.53 milliseconds (10.4%) slowest intializers : libSystem.dylib : 5.52 milliseconds (0.2%) <Redacted> : 51.01 milliseconds (2.4%) MediaServices : 57.60 milliseconds (2.7%) SoundCloud : 182.43 milliseconds (8.7%) Esteban Torres • Core Clients @ SoundCloud • @esttorhe

42. Enter Static Frameworks Esteban Torres • Core Clients @ SoundCloud

    • @esttorhe

43. Total pre-main time: 563.45 milliseconds (100.0%) dylib loading time: 111.39

    milliseconds (19.7%) rebase/binding time: 151.48 milliseconds (26.8%) ObjC setup time: 148.33 milliseconds (26.3%) initializer time: 152.08 milliseconds (26.9%) slowest intializers : libSystem.dylib : 3.37 milliseconds (0.5%) <Redacted> : 46.06 milliseconds (8.1%) MediaServices : 25.92 milliseconds (4.6%) SoundCloud : 148.34 milliseconds (26.3%) Esteban Torres • Core Clients @ SoundCloud • @esttorhe

44. Esteban Torres • Core Clients @ SoundCloud • @esttorhe

45. Resources & Static Frameworks Esteban Torres • Core Clients @

    SoundCloud • @esttorhe

46. Including Frameworks Esteban Torres • Core Clients @ SoundCloud •

    @esttorhe

47. Takeaways Esteban Torres • Core Clients @ SoundCloud • @esttorhe

48. 1. Parallelize* * Also with care Esteban Torres • Core

    Clients @ SoundCloud • @esttorhe

49. 2. Instruments is your friend Esteban Torres • Core Clients

    @ SoundCloud • @esttorhe

50. 3. Static Frameworks* * Also with care Esteban Torres •

    Core Clients @ SoundCloud • @esttorhe

51. 4. Assume no ill-intention Esteban Torres • Core Clients @

    SoundCloud • @esttorhe

52. Links · Automatic's blogpost about static frameworks 1 · Keith

    Smiley's LD python script 2 · CocoaPods 1.5.0 release notes 3 3 http://blog.cocoapods.org/CocoaPods-1.5.0/ 2 https://github.com/keith/swi"-staticlibs 1 https://blog.automatic.com/how-we-cut-our-ios-apps-launch-time-in-half-with-this-one-cool-trick-7aca2011e2ea Esteban Torres • Core Clients @ SoundCloud • @esttorhe

53. Xiè xiè · Github / Twitter @esttorhe - Mastodon @esteban@mastodon.technology

    Esteban Torres • Core Clients @ SoundCloud • @esttorhe

54. We are hiring Esteban Torres • Core Clients @ SoundCloud

    • @esttorhe

55. Esteban Torres • Core Clients @ SoundCloud • @esttorhe

56. Xiè xiè Esteban Torres • Core Clients @ SoundCloud •

    @esttorhe