bitemyapp - The Hashrocket websocket shootout in Haskell
I recently PR’d a Haskell entry to Hashrocket’s websocket shootout. Haskell seemed to do a lot better than C++, Rust, Golang, Elixir, Erlang, NodeJS, Ruby MRI, and JRuby. Although the Haskell version has been since fixed, so I can no longer run the benchmark reliably on my machine, so any final results will have to come from Hashrocket running the unagi-chan variant. How the benchmark works The id
wearewizards.io
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HTTP/2, SPDY 対応ã®è² è·ãƒ†ã‚¹ãƒˆãƒ„ール h2load - Qiita
HTTP/2, SPDY ã«å¯¾å¿œã™ã‚‹è² è·ãƒ†ã‚¹ãƒˆãƒ„ール h2load を紹介ã—ã¾ã™. HTTP/1 用ã®è² è·ãƒ†ã‚¹ãƒˆãƒ„ール㯠ab ã‚„ weighttp ãŒæœ‰åã§ã™ãŒ, ã“れら㯠HTTP/2 ã‚„ SPDY ã«ã¯å¯¾å¿œã—ã¦ã„ã¾ã›ã‚“. HTTP/2, SPDY ã‚’è² è·ãƒ†ã‚¹ãƒˆã™ã‚‹å ´åˆã¯ h2load を使ã†ã“ã¨ãŒã§ãã¾ã™. h2load 㯠nghttp2 リãƒã‚¸ãƒˆãƒªã«å…¥ã£ã¦ã„ã¾ã™. SPDY プãƒãƒˆã‚³ãƒ«ã‚’サãƒãƒ¼ãƒˆã™ã‚‹ã«ã¯, spdylay をリンクã™ã‚‹å¿…è¦ãŒã‚ã‚Šã¾ã™. ãã®ãŸã‚最åˆã« spdylay をインストールã—ã¦ã‹ã‚‰ nghttp2 をインストールã—ã¾ã™. インストール方法ã¯ãã‚Œãžã‚Œã® README を見ã¦ãã ã•ã„. ã“ã®è¨˜äº‹ã®åŸ·ç†æ™‚点ã§ã¯ HTTP/2 ã¯ã¾ã ç–定途ä¸ã§ã™. h2load 㯠nghttp2 ãŒã‚µãƒãƒ¼ãƒˆã™ã‚‹ HTTP/2 ドラフトãƒãƒ¼ã‚¸ãƒ§ãƒ³ã®ã¿ã«å¯¾å¿œã—, 執ç†æ™‚点ã®ãƒãƒ¼ã‚¸ãƒ§
Effective web performance tuning for smartphone
1. Copyright (C) DeNA Co.,Ltd. All Rights Reserved. Effective Web Browser Performance Tuning for Smartphone 1 Dec 16, 2014 ! Kei Takahashi [email protected] Game Development Infrastructure Gr. DeNA Co., Ltd. ~FINAL FANTASY Record Keeper ã®è»Œè·¡~ 2. 自己紹介 2 Copyright (C) DeNA Co.,Ltd. All Rights Reserved. 高橋 æ…§ (ãŸã‹ã¯ã— ã‘ã„) Japanリージョン ゲーム事æ¥æœ¬éƒ¨ 技術・編æˆéƒ¨ ゲーム開発基盤グループ(GDI)所属 Web Frontend Engineer ã¨ã„ã„ã¤ã¤æœ€è¿‘ã¯ã‚¢ãƒ—リã«ãŠ
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Visualisation of Haskell Performance
Visualisation of Haskell Performance Submitted in accordance with the requirements for the degree of Doctor of Philosophy to the University of Leeds, School of Computing June 2014 Author: Peter Moritz Wortmann Supervisor: Dr. David Duke Advisors: Dr. Simon Marlow Dr. Satnam Singh The candidate conï¬rms that the work submitted is his/her own, except where work which has formed part of jointly autho
IAP: Speeding up conduit - FP Complete
As most of us know, performance isn’t a one-dimensional spectrum. There are in fact multiple different ways to judge performance of a program. A commonly recognized tradeoff is that between CPU and memory usage. Often times, a program can be sped up by caching more data, for example. conduit is a streaming data library. In that sense, it has two very specific performance criterion it aims for: Con
CSS will-changeプãƒãƒ‘ティã«ã¤ã„ã¦çŸ¥ã£ã¦ãŠãã¹ãã“㨠| POSTD
ã¯ã˜ã‚ã« WebKit系ブラウザã§CSS transformã‚„animationã¨ã„ã£ãŸãƒ—ãƒãƒ‘ティを使ã£ãŸæ™‚ã«ç™ºç”Ÿã™ã‚‹ã€â€œä¾‹ã®ã¡ã‚‰ã¤ãâ€ã€‚ã“ã‚Œã«æ°—ã¥ã„ãŸã“ã¨ã®ã‚る人ãªã‚‰ã°ã€ãŠãらã“ãƒãƒ¼ãƒ‰ã‚¦ã‚§ã‚¢ãƒ»ã‚¢ã‚¯ã‚»ãƒ©ãƒ¬ãƒ¼ã‚·ãƒ§ãƒ³â€ã¨ã„ã†ç”¨èªžã‚’ã“ã‚Œã¾ã§ã«ã‚‚耳ã«ã—ãŸã“ã¨ãŒã‚ã‚‹ã§ã—ょã†ã€‚ CPU, GPU, ãƒãƒ¼ãƒ‰ã‚¦ã‚§ã‚¢ãƒ»ã‚¢ã‚¯ã‚»ãƒ©ãƒ¬ãƒ¼ã‚·ãƒ§ãƒ³ 一言ã§è¨€ã†ã¨ã€ãƒãƒ¼ãƒ‰ã‚¦ã‚§ã‚¢ãƒ»ã‚¢ã‚¯ã‚»ãƒ©ãƒ¬ãƒ¼ã‚·ãƒ§ãƒ³ã¨ã¯ã€ã‚°ãƒ©ãƒ•ã‚£ãƒƒã‚¯ã‚¹ãƒ»ãƒ—ãƒã‚»ãƒƒã‚·ãƒ³ã‚°ãƒ»ãƒ¦ãƒ‹ãƒƒãƒˆï¼ˆGPU）を用ã„ã¦ã‚»ãƒ³ãƒˆãƒ©ãƒ«ãƒ»ãƒ—ãƒã‚»ãƒƒã‚·ãƒ³ã‚°ãƒ»ãƒ¦ãƒ‹ãƒƒãƒˆï¼ˆCPU）ã®å‡¦ç†é‡ã‚’軽減ã—ã€ãƒ–ラウザã®ãƒ¬ãƒ³ãƒ€ãƒªãƒ³ã‚°å‡¦ç†ã‚’効率化ã™ã‚‹ã“ã¨ã§ã™ã€‚ãƒãƒ¼ãƒ‰ã‚¦ã‚§ã‚¢ãƒ»ã‚¢ã‚¯ã‚»ãƒ©ãƒ¬ãƒ¼ã‚¿ãƒ¼ã‚’有効ã«ã—ã¦CSS処ç†ã‚’使ã†ã¨ã€ãƒšãƒ¼ã‚¸ã®ãƒ¬ãƒ³ãƒ€ãƒªãƒ³ã‚°ãŒé€Ÿããªã‚Šã€ãƒšãƒ¼ã‚¸è¡¨ç¤ºãŒé«˜é€ŸåŒ–ã•ã‚Œã¾ã™ã€‚ åå‰ã®é€šã‚Šã€CPUã¨GPUã¯ã©ã¡ã‚‰ã‚‚プãƒã‚»ãƒƒã‚·ãƒ³ã‚°ãƒ»ãƒ¦ãƒ‹ãƒƒãƒˆã§ã™ã€‚CPUã¯ã‚³ãƒ³ãƒ”ュータã®ãƒžã‚¶ãƒ¼ãƒœãƒ¼ãƒ‰ã«å–り付ã‘られã¦ã„る部å“ã§ã€ã»
Linux Performance
static, benchmarking, tuning: sar, perf-tools, bcc/BPF: bpftrace, BPF book: Images license: creative commons Attribution-ShareAlike 4.0. This page links to various Linux performance material I've created, including the tools maps on the right. These use a large font size to suit slide decks. You can also print them out for your office wall. They show: Linux observability tools, Linux static perfor
O'Reilly Media - Technology and Business Training
New! O’Reilly announces launch of the AI Academy. Read now Introducing the AI Academy Help your entire org put GenAI to work Every employee today needs to know how to prompt GenAI, use it to enhance critical thinking and productivity, and more. With the AI Academy they can. For less. O’Reilly AI-powered Answers just got even smarter O’Reilly Answers instantly generates information teams can trust,
MySQL Index勉強会外部公開用
12. © CROOZ,Inc. 12 １．INDEXã¨ã¯ãªã«ã‹ 何枚目ãŒãªã«ã‹ã‚’事å‰ã«ãƒ¡ãƒ¢ã£ã¦ãŠã‘ã°è‰¯ã„ï¼ ã‚¹ãƒ¼ãƒˆ ランク ä½ç½® ãƒãƒ¼ãƒˆ Q 1 スペード 9 2 : : : ダイヤ 1 40 : : : スペード 6 45 ãªãœãªã‚‰ã€è¦æ±‚ã¯ã€Œã‚«ãƒ¼ãƒ‰ã‚’引ã回数を最も少ãªã ã—ã¦ã‚¹ãƒšãƒ¼ãƒ‰6を探ã™ã“ã¨ã€ セコã„ã¨ã‹ãŠã‚‚ã†ãƒ’トã¯ã„ã‚‹ã‹ ã‚‚ã—ã‚Œã¾ã›ã‚“ãŒä½•ã‚‚セコã„ã“ ã¯ã—ã¦ã„ãªã„ã§ã™ã€‚ å‰ææ¡ä»¶ãªã©ä¸€åˆ‡ãªã„ã‹ã‚‰ ã“ã®ãƒ¡ãƒ¢ã•ãˆã‚ã‚Œã°ä½ç½®ã‚’指定ã—ã¦1回引ã‘ã°æ¸ˆã‚€
Destroying Performance with Strictness
Summary: New versions of unordered-containers cause a massive performance regression in uniplate (10x slower is typical), which I have fixed in uniplate-1.6.11. I've just uploaded uniplate-1.6.11, which fixes a severe performance regression introduced by unordered-containers-0.2.3.0 and above. As an example, the time to run HLint on the HLint source code (my standard benchmark) jumped from 1.7 sec
apfelmus - Reasoning about space leaks with space invariants
Recently, the unordered-containers library has included some changes that made a function much more strict than is sensible in a lazy language like Haskell. The changes were meant to improve consistency on a performance-related issue, namely whether the container should be “key-strict†or “value-strict†or some combination thereof. However, I think that the recent blooper is a sign that there is a
Stricter Haskell - www.kotha.netã®è£
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The worker/wrapper transformation
http://www.cs.nott.ac.uk/~psxjlha/wwmf.pdf
GHC optimisations - HaskellWiki
http://blog.ezyang.com/2011/05/space-leak-zoo/
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