Pedal to the Metal - Aftermath

F2f5f7bc8bd3bd71e51d303e9881fe78?s=47 Esteban Torres
January 19, 2019
Technology
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Pedal to the Metal - Aftermath

Journey SoundCloud had to undergo when improving the iOS launch times.

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Esteban Torres

January 19, 2019
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Transcript

  1. 1.

    Pedal to the Metal Esteban Torres • Core Clients @

    SoundCloud • @esttorhe
  2. 2.

    Pedal to the Metal - AFTERMATH Esteban Torres • Core

    Clients @ SoundCloud • @esttorhe
  3. 3.

    Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  4. 4.

    ! Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  5. 5.

    Sequel Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  6. 6.

    Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  7. 7.

    Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  8. 8.

    ⾠ Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  9. 9.

    Context Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  10. 10.

    Planning @ SoundCloud Esteban Torres • Core Clients @ SoundCloud

    • @esttorhe
  11. 11.

    the bet Esteban Torres • Core Clients @ SoundCloud •

    @esttorhe
  12. 12.

    Improve iOS launch time Esteban Torres • Core Clients @

    SoundCloud • @esttorhe
  13. 13.

    iOS branch Core Clients Esteban Torres • Core Clients @

    SoundCloud • @esttorhe
  14. 14.

    Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  15. 15.

    Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  16. 16.

    Impossibility Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  17. 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. 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. 19.

    Over 5 seconds Esteban Torres • Core Clients @ SoundCloud

    • @esttorhe
  20. 20.

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

    @esttorhe
  21. 21.

    Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  22. 22.

    context Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  23. 23.

    App then Esteban Torres • Core Clients @ SoundCloud •

    @esttorhe
  24. 24.

    Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  25. 25.

    App now Esteban Torres • Core Clients @ SoundCloud •

    @esttorhe
  26. 26.

    Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  27. 27.

    Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  28. 28.

    more context Esteban Torres • Core Clients @ SoundCloud •

    @esttorhe
  29. 29.

    Instruments Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  30. 30.

    Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  31. 31.

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

    Core Clients @ SoundCloud • @esttorhe
  32. 32.

    ! Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  33. 33.

    Main thread Esteban Torres • Core Clients @ SoundCloud •

    @esttorhe
  34. 34.

    ! Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  35. 35.

    ! Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  36. 36.

    How about that ViewController Esteban Torres • Core Clients @

    SoundCloud • @esttorhe
  37. 37.

    even more context Esteban Torres • Core Clients @ SoundCloud

    • @esttorhe
  38. 38.

    Mirroring & you Esteban Torres • Core Clients @ SoundCloud

    • @esttorhe
  39. 39.

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

  40. 40.

    What now !? Esteban Torres • Core Clients @ SoundCloud

    • @esttorhe
  41. 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. 42.

    Enter Static Frameworks Esteban Torres • Core Clients @ SoundCloud

    • @esttorhe
  43. 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. 44.

    Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  45. 45.

    Resources & Static Frameworks Esteban Torres • Core Clients @

    SoundCloud • @esttorhe
  46. 46.

    Including Frameworks Esteban Torres • Core Clients @ SoundCloud •

    @esttorhe
  47. 47.

    Takeaways Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  48. 48.

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

    Clients @ SoundCloud • @esttorhe
  49. 49.

    2. Instruments is your friend Esteban Torres • Core Clients

    @ SoundCloud • @esttorhe
  50. 50.

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

    Core Clients @ SoundCloud • @esttorhe
  51. 51.

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

    SoundCloud • @esttorhe
  52. 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. 53.

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

    Esteban Torres • Core Clients @ SoundCloud • @esttorhe
  54. 54.

    We are hiring Esteban Torres • Core Clients @ SoundCloud

    • @esttorhe
  55. 55.

    Esteban Torres • Core Clients @ SoundCloud • @esttorhe

  56. 56.

    Xiè xiè Esteban Torres • Core Clients @ SoundCloud •

    @esttorhe