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Pedal to the Metal - Aftermath
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.
Esteban Torres
January 19, 2019
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Transcript
Pedal to the Metal Esteban Torres • Core Clients @
SoundCloud • @esttorhe
Pedal to the Metal - AFTERMATH Esteban Torres • Core
Clients @ SoundCloud • @esttorhe
Esteban Torres • Core Clients @ SoundCloud • @esttorhe
! Esteban Torres • Core Clients @ SoundCloud • @esttorhe
Sequel Esteban Torres • Core Clients @ SoundCloud • @esttorhe
Esteban Torres • Core Clients @ SoundCloud • @esttorhe
Esteban Torres • Core Clients @ SoundCloud • @esttorhe
⾠ Esteban Torres • Core Clients @ SoundCloud • @esttorhe
Context Esteban Torres • Core Clients @ SoundCloud • @esttorhe
Planning @ SoundCloud Esteban Torres • Core Clients @ SoundCloud
• @esttorhe
the bet Esteban Torres • Core Clients @ SoundCloud •
@esttorhe
Improve iOS launch time Esteban Torres • Core Clients @
SoundCloud • @esttorhe
iOS branch Core Clients Esteban Torres • Core Clients @
SoundCloud • @esttorhe
Esteban Torres • Core Clients @ SoundCloud • @esttorhe
Esteban Torres • Core Clients @ SoundCloud • @esttorhe
Impossibility Esteban Torres • Core Clients @ SoundCloud • @esttorhe
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
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
Over 5 seconds Esteban Torres • Core Clients @ SoundCloud
• @esttorhe
7,000,000 milliseconds Esteban Torres • Core Clients @ SoundCloud •
@esttorhe
Esteban Torres • Core Clients @ SoundCloud • @esttorhe
context Esteban Torres • Core Clients @ SoundCloud • @esttorhe
App then Esteban Torres • Core Clients @ SoundCloud •
@esttorhe
Esteban Torres • Core Clients @ SoundCloud • @esttorhe
App now Esteban Torres • Core Clients @ SoundCloud •
@esttorhe
Esteban Torres • Core Clients @ SoundCloud • @esttorhe
Esteban Torres • Core Clients @ SoundCloud • @esttorhe
more context Esteban Torres • Core Clients @ SoundCloud •
@esttorhe
Instruments Esteban Torres • Core Clients @ SoundCloud • @esttorhe
Esteban Torres • Core Clients @ SoundCloud • @esttorhe
1. Startup Operations 2. ViewController 4. Profit?? Esteban Torres •
Core Clients @ SoundCloud • @esttorhe
! Esteban Torres • Core Clients @ SoundCloud • @esttorhe
Main thread Esteban Torres • Core Clients @ SoundCloud •
@esttorhe
! Esteban Torres • Core Clients @ SoundCloud • @esttorhe
! Esteban Torres • Core Clients @ SoundCloud • @esttorhe
How about that ViewController Esteban Torres • Core Clients @
SoundCloud • @esttorhe
even more context Esteban Torres • Core Clients @ SoundCloud
• @esttorhe
Mirroring & you Esteban Torres • Core Clients @ SoundCloud
• @esttorhe
⚡" Esteban Torres • Core Clients @ SoundCloud • @esttorhe
What now !? Esteban Torres • Core Clients @ SoundCloud
• @esttorhe
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
Enter Static Frameworks Esteban Torres • Core Clients @ SoundCloud
• @esttorhe
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
Esteban Torres • Core Clients @ SoundCloud • @esttorhe
Resources & Static Frameworks Esteban Torres • Core Clients @
SoundCloud • @esttorhe
Including Frameworks Esteban Torres • Core Clients @ SoundCloud •
@esttorhe
Takeaways Esteban Torres • Core Clients @ SoundCloud • @esttorhe
1. Parallelize* * Also with care Esteban Torres • Core
Clients @ SoundCloud • @esttorhe
2. Instruments is your friend Esteban Torres • Core Clients
@ SoundCloud • @esttorhe
3. Static Frameworks* * Also with care Esteban Torres •
Core Clients @ SoundCloud • @esttorhe
4. Assume no ill-intention Esteban Torres • Core Clients @
SoundCloud • @esttorhe
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
Xiè xiè · Github / Twitter @esttorhe - Mastodon @esteban@mastodon.technology
Esteban Torres • Core Clients @ SoundCloud • @esttorhe
We are hiring Esteban Torres • Core Clients @ SoundCloud
• @esttorhe
Esteban Torres • Core Clients @ SoundCloud • @esttorhe
Xiè xiè Esteban Torres • Core Clients @ SoundCloud •
@esttorhe