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
10倍速いNode.js並列プログラミング
Search
shigeru. nakajima
June 29, 2018
Technology
12
4.2k
10倍速いNode.js並列プログラミング
Node.jsのプログラミングを並列化して10倍速く動かした話です。
Node学園 31時限目 のLT
https://nodejs.connpass.com/event/90936/
shigeru. nakajima
June 29, 2018
Tweet
Share
More Decks by shigeru. nakajima
See All by shigeru. nakajima
Introduce dRuby
ledsun
0
140
Watching Ruby in browsers
ledsun
0
58
Using Ruby in the browser is wonderful
ledsun
1
2.6k
Rubyで書いたテトリスをブラウザで動かしてみた
ledsun
0
2.3k
ruby.wasm に関する進捗報告
ledsun
0
1k
Hacking Guide of the ruby.wasm
ledsun
0
1.4k
私の作ったruby.wasm アプリケーション
ledsun
0
600
Load gem from browser
ledsun
2
1.6k
パラメタライズドテスト
ledsun
0
530
Other Decks in Technology
See All in Technology
SOLID - Architecture and Architectural Decisions - Devfest Goa 2024
rivuchk
0
150
パートナー企業のテクニカルサポートエンジニアとして気になる、より良い AWS サポートの利活用について
kazzpapa3
0
180
生成AI入門
shukob
0
110
データ分析基盤のためにS3を深堀りする~アーキテクチャ設計の考え方のヒントに~
nrinetcom
PRO
1
740
XSS攻撃から考察するAWS設定不備の恐怖/20241012 Hironobu Otaki
shift_evolve
0
110
CData Virtuality 日本ローンチイベントのKeynote
cdataj
0
430
CData Virtuality を活かせるキーシナリオと製品デモ
cdataj
0
430
とある事業会社にとっての Kaggler の魅力
hakubishin3
7
1.5k
Do you know “Environment Variables” ?
akimiya
0
140
RAG: from dumb implementation to serious results
glaforge
0
610
MobileActOsaka_241018.pdf
akaitadaaki
0
100
俺とVSCode Python Debugger Extension
sat
PRO
1
140
Featured
See All Featured
GraphQLの誤解/rethinking-graphql
sonatard
65
9.9k
The Straight Up "How To Draw Better" Workshop
denniskardys
232
130k
A better future with KSS
kneath
237
17k
Bash Introduction
62gerente
608
210k
Making the Leap to Tech Lead
cromwellryan
131
8.9k
Navigating Team Friction
lara
183
14k
Save Time (by Creating Custom Rails Generators)
garrettdimon
PRO
26
700
VelocityConf: Rendering Performance Case Studies
addyosmani
325
23k
Agile that works and the tools we love
rasmusluckow
327
21k
Rails Girls Zürich Keynote
gr2m
93
13k
Performance Is Good for Brains [We Love Speed 2024]
tammyeverts
3
330
BBQ
matthewcrist
85
9.2k
Transcript
10ഒ͍Node.jsฒྻϓϩάϥϛϯά Shigeru Nakajima a.k.a. @ledsun Luxiar co., ltd NodeֶԂ LT
2018/06/29
Node εΫϨΠϐϯά͓͡͞Μ ʮnode εΫϨΠϐϯάʯͰάάͬͯ
PANQ panq http://www.panq.jp/ ͱ͍͏αʔϏεΛ࡞ͬ ͍ͯΔ QiitaͷهࣄΛࢀরͰධՁ Qiita APIͰࢀরऔΕͳ͍ εΫϨΠϐϯάͰऔಘ 8000هࣄΛूΊͨ
NodeͱεΫϨΠϐϯά εΫϨΠϐϯά = HTMLμϯϩʔυɹ + ɹHTMLύʔε = Network IOɹɹɹɹɹ+ɹ CPU
work
εΫϨΠϐϯάඇಉظϓϩ άϥϛϯάϞσϧͱΑ͘߹͏ request('http://example.com/', (e, res, body) => { const doc
= libxmljs.parseHtmlString(body) const data = doc.get('(//dl[@class="newsList"])[1]/dt[1]/text()') }) ;ͭ͏ʹॻ͘ͱޮతʹಈ͘
࠶ύʔε • ධՁ߲Λมߋ͍ͨ͠ • 8000htmlϑΝΠϧΛ࠶ύʔε
20min
ͬͱ͍ͨ͘͠
C++ Addon: libxmljs • ύʔεॲཧΛ͘͢Δ • parse5Λlibxmljsʹม͑Δ • 1200s(20min) =>
160s • 7.5ഒ͘ͳͬͨ • parse5: pure js • libxmljs: libxml2 (c) ͷϥούʔ
ͬͱ͍ͨ͘͠
ॲཧ༰ͷੳ • SSDڥͰFileಡΈࠐΈշ • IOͪຆͲແ͍ • CPUॲཧ͕େΛΊΔ • ୯ମͷCPUॲཧΛ͘͢Δͷ͍͠
ฒྻϓϩάϥϛϯά ݱͷύιίϯෳίΞ͕ࡌ͍ͬͯΔ ෳͷίΞͰCPUॲཧΛฒྻʹΒͤΔ => ฒྻϓϩάϥϛϯά
ຊͷ͓ Node.jsϓϩάϥϜΛฒྻԽͯ͠ੑೳΛ্͛Δ
ฒྻԽ • 1ͷϚγϯͷෳͷίΞΛͬͯɺಉ࣌ʹෳ ͷܭࢉΛ࣮ߦ • ෳϚγϯͷѻΘͳ͍
ϓϩηε • ฒྻϓϩάϥϛϯάͱ͍͑εϨου • Node.jsʹεϨουͳ͍ • ϓϩηεΛ͏
child_process.fork() ϫʔΧʔϓϩηεΛཱͯΔ const processes = [] for (var i =
0; i < number; i++) { processes.push(fork(program, [], { stdio: ['ignore', 'ignore', process.stderr, 'ipc'] })) }
֤ϓϩηεʹৼΓ͚Δ // ϑΥϧμͷϑΝΠϧҰཡΛऔಘ const dir = `${process.cwd()}/data/public/cache` const stream =
readdirp({ root: dir, fileFilter: '*.html' }) // ࢠϓϩηεͰύʔε let count = 0 stream.on('data', (data) => { // ϥϯυϩϏϯͰϑΝΠϧΛ count++; processes[count % processes.length].send(data) })
݁Ռɿ80sʂ͖Ε͍ʹ2ഒ
ͬͱ͍ͨ͘͠
Node.jsʹεϨουͳ͍ͱ ݴͬͨͳɺ͋Εӕͩ https://github.com/xk/node-threads-a-gogo • C++ AddonͰωΠςΟϒεϨουΛىಈ
ɿNode 6.x Ͱಈ͘ • Node 6.xͰ͔͠ಈ͔ͳ͍ • Node 6.x ͩͱͦΕ͚ͩͰ30%͙Β͍͍
• node-threads-a-gogo ͷ Node 10ରԠ • 4࣌ؒؤுͬͯఘΊͨ
Node.jsʹεϨουͳ͍ͱ ݴͬͨͳɺ͋Εӕͩʢ̎ʣ https://nodejs.org/api/worker_threads.html • v10.5.0@6/20 Ҏ߱ • ΤΫεϖϦϝϯλϧ • --experimental-worker
• ϑϥάΛ͚ͭΔͱಡΈࠐ·ΕΔϞδϡʔϧ
worker_threads.Worker child_process.fork()ͱେମҰॹ const workers = [] for (var i =
0; i < number; i++) { workers.push(new Worker(program)) }
threadʹৼΓ͚ // ϑΥϧμͷϑΝΠϧҰཡΛऔಘ const dir = `${process.cwd()}/data/public/cache` const stream =
readdirp({ root: dir, fileFilter: '*.html' }) // ϫʔΧʔͰύʔε let count = 0 stream.on('data', (data) => { // ϥϯυϩϏϯͰϑΝΠϧΛ count++; workers[count % workers.length].postMessage(data) })
ɿC++ Addonಈ͔ͳ ͍ • libxmljs͕͑ͳ͍ • 7.5ഒ͕ɺ͘ͳΔ • https://github.com/nodejs/node/issues/ 21481
ͬͱ͍ͨ͘͠
ίΞΛ૿ͤฒྻ • 2ίΞͰ2ഒ͕ݶքͳΒɺͨ͘͞ΜίΞͷ͋ ΔϚγϯΛ͍͍͑ • AWS EC2 c4.8xlarge • 36ίΞ
=> 80s͕2.2sʹ!? • 2.016USD/࣌ؒ
None
c4.8xlarge • ͦͦCPU͕͍͢͝ • 1ฒྻͰ90sʢx1.8ʣ • 12ฒྻͰ8s • ݶքʢ36ίΞΛ͍Εͳ͍ʣ
ϘτϧωοΫෆ໌ • ಡΈࠐΈIO͕ϘτϧωοΫʁ • SSDϚγϯʢi3.4xlargeʣΛ͕ͬͯ มΘΒͳ͍ • ϓϩηεͷݶքʁ • εϨουΛࢼ͔ͨͬͨ͠
ຊͷ·ͱΊ • libxmljsΛͬͯ 7.5ഒ • 2$/hͷϚγϯͰ 1.8ഒ • ฒྻϓϩάϥϛϯάͰ 11.3
ഒ • worker threadsͷҠߦ͕؆୯ ฒྻϓϩάϥϛϯά͓͍͍͠
ฒྻϓϩάϥϛϯά͠Α͏ worker threadsΛָ͠Έʹ͠·͠ΐʔ