Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
今すぐできる、ユーザーとチームのためのiOS速度改善 / Gunosy Kaizen Nigh...
Search
Seiji Takahashi
August 10, 2017
Programming
1
5.4k
今すぐできる、ユーザーとチームのためのiOS速度改善 / Gunosy Kaizen Night iOS development optimization
Gunosy カイゼン Night #1の発表資料です。
Seiji Takahashi
August 10, 2017
Tweet
Share
More Decks by Seiji Takahashi
See All by Seiji Takahashi
Go Backends for frontends with GraphQL and gRPC
timakin
6
4k
Design Pattern for Image and Text Composition in Go
timakin
5
6.7k
Golang API Testing the HARD way
timakin
13
6.7k
Head First Golang Image Package
timakin
2
10k
React Native Beyond Prototype
timakin
2
1.6k
Performance Optimization on Google AppEngine
timakin
5
6.3k
testcache.pdf
timakin
1
150
How Go cache
timakin
1
90
How Go cache tests
timakin
1
3.1k
Other Decks in Programming
See All in Programming
第9回 情シス転職ミートアップ 株式会社IVRy(アイブリー)の紹介
ivry_presentationmaterials
1
290
Kotlin エンジニアへ送る:Swift 案件に参加させられる日に備えて~似てるけど色々違う Swift の仕様 / from Kotlin to Swift
lovee
1
270
Systèmes distribués, pour le meilleur et pour le pire - BreizhCamp 2025 - Conférence
slecache
0
120
たった 1 枚の PHP ファイルで実装する MCP サーバ / MCP Server with Vanilla PHP
okashoi
1
240
Rubyでやりたい駆動開発 / Ruby driven development
chobishiba
1
670
Team operations that are not burdened by SRE
kazatohiei
1
310
AI駆動のマルチエージェントによる業務フロー自動化の設計と実践
h_okkah
0
100
0626 Findy Product Manager LT Night_高田スライド_speaker deck用
mana_takada
0
160
データの民主化を支える、透明性のあるデータ利活用への挑戦 2025-06-25 Database Engineering Meetup#7
y_ken
0
350
A full stack side project webapp all in Kotlin (KotlinConf 2025)
dankim
0
110
明示と暗黙 ー PHPとGoの インターフェイスの違いを知る
shimabox
2
490
CursorはMCPを使った方が良いぞ
taigakono
1
250
Featured
See All Featured
XXLCSS - How to scale CSS and keep your sanity
sugarenia
248
1.3M
The World Runs on Bad Software
bkeepers
PRO
69
11k
Reflections from 52 weeks, 52 projects
jeffersonlam
351
20k
GraphQLとの向き合い方2022年版
quramy
49
14k
Practical Tips for Bootstrapping Information Extraction Pipelines
honnibal
PRO
20
1.3k
How STYLIGHT went responsive
nonsquared
100
5.6k
How to train your dragon (web standard)
notwaldorf
94
6.1k
Navigating Team Friction
lara
187
15k
The Web Performance Landscape in 2024 [PerfNow 2024]
tammyeverts
8
680
The Pragmatic Product Professional
lauravandoore
35
6.7k
Six Lessons from altMBA
skipperchong
28
3.9k
The Art of Programming - Codeland 2020
erikaheidi
54
13k
Transcript
ࠓ͙͢Ͱ͖Δɺ ϢʔβʔͱνʔϜͷͨΊͷ iOSվળ @__timakin__ / Gunosy ΧΠθϯ Night #1
ࣗݾհ • Github: timakin / Twitter: @__timakin__ • Contributor of
Go / golang.tokyo / roppongi-golunch • Gunosy ৽نࣄۀ։ൃࣨ ॴଐ • Go / Swift • Recently Contributed / Created • giginet/xcprofiler • mercari/gaurun • timakin/gopli • timakin/ssm2env • timakin/md2mid • timakin/autocompl
߹ΘͤͯಡΈ͍ͨ https://speakerdeck.com/timakin/maikurotimudefalsegao-su-naxin-gui-kai-fa-wozhi-erukai-fa-fen-xi-ji-pan
ࠓ͢͜ͱ • iOS(Swift)։ൃͷΧΠθϯ • ϢʔβʔͷͨΊͷΧΠθϯ • νʔϜͷͨΊͷΧΠθϯ
Goͷɺ ͠·ͤΜʂ
Swift(iOSΞϓϦ)ྺ 3ϲ݄
ؒҧͬͯΔ͋Δ͔Ͱ͕͢ɺ ΑΖ͓͘͠ئ͍͠·͢ʂ
ͦͦͳΜͰ վળ͕ඞཁ͔ʁ
͍ͱԿ͕ى͜Δʁ
͍ͱى͜Δ͜ͱɿΞϓϦମݧฤ • ਓੜແବײ͋ͬͯΞϓϦΘͳ͘ͳΔ
͍ͱى͜Δ͜ͱɿΞϓϦମݧฤ • ਓੜແବײ͋ͬͯΞϓϦΘͳ͘ͳΔ • ࡶΞϓϦײ͋ͬͯ։ൃνʔϜͷαϙʔτ͕ෆ҆
• ਓੜແବײ͋ͬͯΞϓϦΘͳ͘ͳΔ • ࡶΞϓϦײ͋ͬͯ։ൃνʔϜͷαϙʔτ͕ෆ҆ • ใ͕ܽམͯ͠Πϥͭ͘ ͍ͱى͜Δ͜ͱɿΞϓϦମݧฤ
• ਓੜແବײ͋ͬͯΞϓϦΘͳ͘ͳΔ • ࡶΞϓϦײ͋ͬͯ։ൃνʔϜͷαϙʔτ͕ෆ҆ • ใ͕ܽམͯ͠Πϥͭ͘ • ͬͯΔؒʹbackground -> ଞͷΞϓϦʹભҠ͠
ͯΔͷΕΔ ͍ͱى͜Δ͜ͱɿΞϓϦମݧฤ
• ਓੜແବײ͋ͬͯΞϓϦΘͳ͘ͳΔ • ࡶΞϓϦײ͋ͬͯ։ൃνʔϜͷαϙʔτ͕ෆ҆ • ใ͕ܽམͯ͠Πϥͭ͘ • ͬͯΔؒʹbackground -> ଞͷΞϓϦʹભҠ͠
ͯΔͷΕΔ • ڝ߹ΞϓϦͱѱ͍ΛൺΒΕΔධՁϦεΫ ͍ͱى͜Δ͜ͱɿΞϓϦମݧฤ
• ਓੜແବײ͋ͬͯΞϓϦΘͳ͘ͳΔ • ࡶΞϓϦײ͋ͬͯ։ൃνʔϜͷαϙʔτ͕ෆ҆ • ใ͕ܽམͯ͠Πϥͭ͘ • ͬͯΔؒʹbackground -> ଞͷΞϓϦʹભҠ͠
ͯΔͷΕΔ • ڝ߹ΞϓϦͱѱ͍ΛൺΒΕΔධՁϦεΫ • αʔϏεͷࢮ ͍ͱى͜Δ͜ͱɿΞϓϦମݧฤ
• ແҙࣝʹ࿘අ͞ΕΔ࣌ؒ ͍ͱى͜Δ͜ͱɿ։ൃฤ
• ແҙࣝʹ࿘අ͞ΕΔ࣌ؒ • ΟϯυҠͬͯɺ͕ͯूத్͕ΕΔ ͍ͱى͜Δ͜ͱɿ։ൃฤ
• ແҙࣝʹ࿘අ͞ΕΔ࣌ؒ • ΟϯυҠͬͯɺ͕ͯूத్͕ΕΔ • ͖ͬͯͯ࡞ۀΛࢥ͍ग़͢ͷʹίϯςΩετεΠο νͷίετ͕͔͔Δ ͍ͱى͜Δ͜ͱɿ։ൃฤ
• ແҙࣝʹ࿘අ͞ΕΔ࣌ؒ • ΟϯυҠͬͯɺ͕ͯूத్͕ΕΔ • ͖ͬͯͯ࡞ۀΛࢥ͍ग़͢ͷʹίϯςΩετεΠο νͷίετ͕͔͔Δ • ݕূʹऔΕΔ͕࣌ؒݮΔ ͍ͱى͜Δ͜ͱɿ։ൃฤ
• ແҙࣝʹ࿘අ͞ΕΔ࣌ؒ • ΟϯυҠͬͯɺ͕ͯूத్͕ΕΔ • ͖ͬͯͯ࡞ۀΛࢥ͍ग़͢ͷʹίϯςΩετεΠο νͷίετ͕͔͔Δ • ݕূʹऔΕΔ͕࣌ؒݮΔ •
ϦϦʔε͕ΕΔ ͍ͱى͜Δ͜ͱɿ։ൃฤ
• ແҙࣝʹ࿘අ͞ΕΔ࣌ؒ • ΟϯυҠͬͯɺ͕ͯूத్͕ΕΔ • ͖ͬͯͯ࡞ۀΛࢥ͍ग़͢ͷʹίϯςΩετεΠο νͷίετ͕͔͔Δ • ݕূʹऔΕΔ͕࣌ؒݮΔ •
ϦϦʔε͕ΕΔ • Πέͯͳ͍։ൃνʔϜʹͳͬͯਓݺͳ͍ ͍ͱى͜Δ͜ͱɿ։ൃฤ
• ແҙࣝʹ࿘අ͞ΕΔ࣌ؒ • ΟϯυҠͬͯɺ͕ͯूத్͕ΕΔ • ͖ͬͯͯ࡞ۀΛࢥ͍ग़͢ͷʹίϯςΩετεΠο νͷίετ͕͔͔Δ • ݕূʹऔΕΔ͕࣌ؒݮΔ •
ϦϦʔε͕ΕΔ • Πέͯͳ͍։ൃνʔϜʹͳͬͯਓݺͳ͍ • αʔϏεͷࢮ ͍ͱى͜Δ͜ͱɿ։ൃฤ
• ͱʹ͔͘ࢮ͵ ͍ͱى͜Δ͜ͱɿ·ͱΊ
୭ͷͨΊʹ͘͢Δ͔
1. Ϣʔβʔ
2. νʔϜ
ϢʔβʔͷͨΊͷվળ • ىಈվળͷ͠·͢
https://developer.apple.com/videos/play/ wwdc2016/406/
https://developer.apple.com/videos/play/ wwdc2017/413/
ϢʔβʔͷͨΊͷվળ • ىಈ͕͘ͳΔݪҼ • ىಈΛܭଌ͢Δํ๏ • վળํ๏
ىಈ͕͘ͳΔݪҼ • Too many dylibs
ىಈ͕͘ͳΔݪҼ • Too many dylibs • Too many class/method declarations
• Too many dylibs • Too many class/method declarations •
Too many initializers ىಈ͕͘ͳΔݪҼ
• Too many dylibs • Too many class/method declarations •
Too many initializers • SDK ىಈ͕͘ͳΔݪҼ
• Too many dylibs • Too many class/method declarations •
Too many initializers • SDK • API Call ىಈ͕͘ͳΔݪҼ
• Too many dylibs • Too many class/method declarations •
Too many initializers • SDK • API Call • Middleware ىಈ͕͘ͳΔݪҼ
• ࣌ؒͷ͔͔ΔॲཧdaemonͰ Dyld3
• ࣌ؒͷ͔͔ΔॲཧdaemonͰ • ෳࡶͳॲཧ(Mach-O parse/compile) શ෦ͦͬͪʹدͤΔ Dyld3
• ࣌ؒͷ͔͔ΔॲཧdaemonͰ • ෳࡶͳॲཧ(Mach-O parse/compile) શ෦ͦͬͪʹدͤΔ • launch closure caching
Dyld3
ىಈܭଌ • Instruments • Time Profiler
ىಈܭଌ • Instruments • Time Profiler • Static Initializer Calls
(iOS11 / Mac OS High Sierra)
ىಈܭଌ • Instruments • Time Profiler • Static Initializer Calls
(iOS11 / Mac OS High Sierra) • DYLD_PRINT_STATISTICS
DYLD_PRINT_STATISTICS Total pre-main time: 2.5 seconds (100.0%) dylib loading time:
1.3 seconds (54.0%) rebase/binding time: 111.49 milliseconds (4.3%) ObjC setup time: 432.17 milliseconds (16.9%) initializer time: 631.54 milliseconds (24.7%) slowest intializers : libSystem.B.dylib : 22.83 milliseconds (0.8%) xxx-ios : 500.72 milliseconds (19.5%)
վળํ๏ • Fewer dylibs • ༻සͷ͍UIϥΠϒϥϦͳͲΛͻͨ͢ Βআڈ
վળํ๏ • Fewer initializers • initͰඞཁͳ͍ॲཧۃྗআ֎
վળํ๏ • Fewer initializers • initͰඞཁͳ͍ॲཧۃྗআ֎ • Debug༻ͷϥΠϒϥϦͷinitͳͲΛຊ൪Ͱআ֎
վળํ๏ • Fewer initializers • initͰඞཁͳ͍ॲཧۃྗআ֎ • Debug༻ͷϥΠϒϥϦͷinitͳͲΛຊ൪Ͱআ֎ • RxSwiftͰແҙࣝʹͬͯͨॏෳAPI
Callͷআڈ
վળํ๏ • Fewer initializers • initͰඞཁͳ͍ॲཧۃྗআ֎ • Debug༻ͷϥΠϒϥϦͷinitͳͲΛຊ൪Ͱআ֎ • RxSwiftͰແҙࣝʹͬͯͨॏෳAPI
Callͷআڈ • SDKͷฒྻsetup
վળํ๏ • Fewer classes/methods • structͰએݴͰ͖Δͷۃྗஔ͖͑
վળํ๏ • Fewer classes/methods • structͰએݴͰ͖Δͷۃྗஔ͖͑ • ͬͯͳ͍Ϋϥεɺ༻සͷ͍Ϋϥεͷআ ڈ
Ҏ্ɺϢʔβʔͷͨΊʹ ىಈΛ͘͢Δɻ
νʔϜͷͨΊͷվળ • Ϗϧυ࣌ؒͷΛ͠·͢ɻ
νʔϜͷͨΊͷվળ • Ϗϧυ͕͘ͳΔݪҼ • Ϗϧυ࣌ؒΛܭଌ͢Δํ๏ • վળํ๏
Ϗϧυ͕͘ͳΔݪҼ • ཁ͢ΔʹίϯύΠϥϥΠϒϥϦͷϚούʔ ʹࣄͤ͗͢͞
Ϗϧυ࣌ؒΛܭଌ͢Δํ๏ • -Xfrontend -debug-time-function-bodies
Ϗϧυ࣌ؒΛܭଌ͢Δํ๏ • -Xfrontend -debug-time-function-bodies • ؔ͝ͱͷϏϧυ࣌ؒܭଌ(Swift)
Ϗϧυ࣌ؒΛܭଌ͢Δํ๏ • giginet/xcprofiler
Ϗϧυ࣌ؒΛܭଌ͢Δํ๏ • giginet/xcprofiler
Ϗϧυ࣌ؒΛܭଌ͢Δํ๏ • giginet/xcprofiler • Rubygemύοέʔδ
Ϗϧυ࣌ؒΛܭଌ͢Δํ๏ • giginet/xcprofiler • Rubygemύοέʔδ • ϝιου୯ҐͰܭଌ࣌ؒ(ms)Λιʔτͯ͠ ςʔϒϧग़ྗ
Ϗϧυ࣌ؒΛܭଌ͢Δํ๏ • giginet/xcprofiler • Rubygemύοέʔδ • ϝιου୯ҐͰܭଌ࣌ؒ(ms)Λιʔτͯ͠ ςʔϒϧग़ྗ • giginet/danger-xcprofilerͱซ༻͍͍ͯ͠
͔
վળํ๏ • ͱΓ͋͑ͣ50~60msͷϥΠϯΛ͑ͨΒɺ ؾ͍ͮͨλΠϛϯάͰؔຖϏϧυ࣌ؒΛ ݮΒ͢
վળํ๏ • ܕਪආ͚Δ ʢClosureΓ, Variableએݴʣ
վળํ๏ • ܕਪආ͚Δ ʢClosureΓ, Variableએݴʣ • ϝιουνΣΠϯආ͚ΔʢҰ࣌มʹ֨ೲʣ
վળํ๏ • ܕਪආ͚Δ ʢClosureΓ, Variableએݴʣ • ϝιουνΣΠϯආ͚ΔʢҰ࣌มʹ֨ೲʣ • ྻ݁߹(don’t +,
append)
վળํ๏ • ܕਪආ͚Δ ʢClosureΓ, Variableએݴʣ • ϝιουνΣΠϯආ͚ΔʢҰ࣌มʹ֨ೲʣ • ྻ݁߹(don’t +,
append) • `??` ࡾ߲ԋࢉࢠΘͳ͍
վળํ๏ • ܕਪආ͚Δ ʢClosureΓ, Variableએݴʣ • ϝιουνΣΠϯආ͚ΔʢҰ࣌มʹ֨ೲʣ • ྻ݁߹(don’t +,
append) • `??` ࡾ߲ԋࢉࢠΘͳ͍ • lazy propertiesͷϓϥΠϕʔτϝιουԽ
վળํ๏ • ܕਪආ͚Δ ʢClosureΓ, Variableએݴʣ • ϝιουνΣΠϯආ͚ΔʢҰ࣌มʹ֨ೲʣ • ྻ݁߹(don’t +,
append) • `??` ࡾ߲ԋࢉࢠΘͳ͍ • lazy propertiesͷϓϥΠϕʔτϝιουԽ • ObjectMapperۃྗΘͳ͍
վળํ๏ • ܕਪආ͚Δ ʢClosureΓ, Variableએݴʣ • ϝιουνΣΠϯආ͚ΔʢҰ࣌มʹ֨ೲʣ • ྻ݁߹(don’t +,
append) • `??` ࡾ߲ԋࢉࢠΘͳ͍ • lazy propertiesͷϓϥΠϕʔτϝιουԽ • ObjectMapperۃྗΘͳ͍ • CocoaPodsΛv1.3.0Ҏ্ʹΞοϓάϨʔυ͢Δ
վળํ๏ • ܕਪආ͚Δ ʢClosureΓ, Variableએݴʣ • ϝιουνΣΠϯආ͚ΔʢҰ࣌มʹ֨ೲʣ • ྻ݁߹(don’t +,
append) • `??` ࡾ߲ԋࢉࢠΘͳ͍ • lazy propertiesͷϓϥΠϕʔτϝιουԽ • ObjectMapperۃྗΘͳ͍ • CocoaPodsΛv1.3.0Ҏ্ʹΞοϓάϨʔυ͢Δ
CocoaPods >= v1.3.0
CocoaPods >= v1.3.0 • Dynamic FrameworkͷpathΩϟογϡͷόά͕ मਖ਼͞ΕͨͬΆ͍ʁ
CocoaPods >= v1.3.0 • Dynamic FrameworkͷpathΩϟογϡͷόά͕ मਖ਼͞ΕͨͬΆ͍ʁ • ͍͘Β͍͘ͳΔɻ LUCRAॳظϏϧυ͡Όͳ͚Ε2ඵ͘Β͍ʹͳͬͨɻ
Ҏ্ɺνʔϜͷͨΊʹ ϏϧυΛ͘͢Δɻ
• αʔϏεͷࢮʹͭͳ͕ΔͷͰվળ͔ͬ͠Γɻ • ϢʔβʔͷͨΊͷվળ • XCodeඋ͚͑ͷػೳͰىಈ࣌ؒܭଌɻ • ίϯύΠϥɾϦϯΧʹ༏͍͠ίʔυɾߏΛɻ • νʔϜͷͨΊͷվળ
• पลπʔϧ͍ͭͭϏϧυ࣌ؒܭଌɻ • γϯλοΫεɺpodsͳͲಓʹվળɻ ·ͱΊ
Thank you!