Pedal to the Metal - Aftermath

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

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