Upgrade to Pro — share decks privately, control downloads, hide ads and more …

JVM运行时诊断工具 HouseMD

Ece2256cd4c3709ecd5cdcf014f5910e?s=47 Lunfu Zhong
June 04, 2013
Programming
0
190

JVM运行时诊断工具 HouseMD

Ece2256cd4c3709ecd5cdcf014f5910e?s=128

Lunfu Zhong

June 04, 2013
Tweet

More Decks by Lunfu Zhong

See All by Lunfu Zhong
spring-boot 在统一架构体系中的价值
Ece2256cd4c3709ecd5cdcf014f5910e?s=48 zhongl
2
600
如何准备一场主题分享
Ece2256cd4c3709ecd5cdcf014f5910e?s=48 zhongl
1
160
当配置遇到 Scala宏
Ece2256cd4c3709ecd5cdcf014f5910e?s=48 zhongl
1
170
项目求生指南
Ece2256cd4c3709ecd5cdcf014f5910e?s=48 zhongl
0
140
LEGO - let's build everything by scala
Ece2256cd4c3709ecd5cdcf014f5910e?s=48 zhongl
1
110
Real-world Scala
Ece2256cd4c3709ecd5cdcf014f5910e?s=48 zhongl
2
80
Art of The Code
Ece2256cd4c3709ecd5cdcf014f5910e?s=48 zhongl
1
190

Other Decks in Programming

See All in Programming
プロダクトの成長とSREと
5a9fb3b80c517e51e4e95a27b63c6a67?s=48 takuyatezuka
0
120
クラウド KMS の活用 / TOKYO BLOCKCHAIN TECH MEETUP 2022
00766b8e1f9c2665cf7fd29f9cf558df?s=48 odanado
PRO
0
180
パラメタライズドテスト
4f8c3a1aedaf9aafd6c74ab077d9ad18?s=48 ledsun
0
220
ちょっとつよい足トラ
6a661bb5871208cad64912223bb0c637?s=48 logilabo
0
370
kintone × LINE Bot で餃子検定Botを作った話
9452778272d5d1a19e897f4b75204fb2?s=48 naberina
0
330
20220706_Google Apps Scriptを実演で学ぶ～ GAS × Slack ～
C983c1e22d0d19f21590b83884d9b754?s=48 apachan
2
620
フロントエンドエンジニアが変える現場のモデリング意識/modeling-awareness-changed-by-front-end-engineers
F122773bb8d506a4f38a94bfeff45945?s=48 uggds
32
13k
SwiftUI+TCAに挑戦！NewsPicks iOSアプリのリアーキテクチャ/re-architecture-newspicks-ios-app-with-swiftui-and-tca
1da8b476058df860d83a12c496b74fff?s=48 takehilo
0
390
SwiftUIで「意図」を伝える / swiftui_intention
42a6a049ac8f5265f31858a9509217fb?s=48 uhooi
2
140
SRE NEXT 2022に学ぶこれからのSREキャリア
71929a476c581dd754e4e1f355ac07d0?s=48 fukubaka0825
2
390
kintoneでランダム取得を作ってみた（imoniCamp 2022-07-27)
F9904a15202c8ead8e638fc6fa659e33?s=48 shokun1108
0
140
料理の注文メニューの3D化への挑戦
Fbe7836c8ca96e3099dd5bbd83d1a391?s=48 hideg
0
280

Featured

See All Featured
Gamification - CAS2011
4394ceb8b277f35ee3da7030384efb5d?s=48 davidbonilla
75
3.9k
Helping Users Find Their Own Way: Creating Modern Search Experiences
3d4519fd34b76fb265fc0237f3792bd4?s=48 danielanewman
7
1.1k
StorybookのUI Testing Handbookを読んだ
50fc0fdc2327ecbe7350645812de52e3?s=48 zakiyama
6
2.5k
Building an army of robots
5f2da528927a2ec9ba4fec2069cbc958?s=48 kneath
298
40k
Unsuck your backbone
B83d5b590577969ee79a5ad845411a7d?s=48 ammeep
659
55k
The Web Native Designer (August 2011)
0bce06bd06ee7a2c4f5500f25dcf7f18?s=48 paulrobertlloyd
75
2k
Agile that works and the tools we love
462dad0dd24c568a32dcdb0ae895ae1b?s=48 rasmusluckow
319
19k
Designing for humans not robots
D36d2c1821af9249b69ff7f5ed60529b?s=48 tammielis
241
24k
Making the Leap to Tech Lead
32de0bd2ba869609d26fd052a4622778?s=48 cromwellryan
113
7.4k
Designing Experiences People Love
1b75d89772b7eea1f6c89fbf362607d9?s=48 moore
130
22k
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
5b9fe87ec1faa67a4599782930f45ec9?s=48 sstephenson
151
13k
JavaScript: Past, Present, and Future - NDC Porto 2020
3ab1249be442027903e1180025340b3f?s=48 reverentgeek
37
3.3k

Transcript

  1. H ouse .M.D

  2. 聚石@taobao.com https://github.com/zhongl

  3. 他是一位 诊断 技艺精湛的医生

  4. 话说 诊断 技艺精湛的 程序员会是...

  5. System.out.println("debugging");

  6. LOG.debug("debugging");

  7. 信息打印总不全有木有? 又要改代码 > 编译 > 部署, 有木有? 多来几次想屎的心有木有?

  8. 工欲善其事，必先利其器

  9. BTrace 神器降临, 一秒钟变高富帅!

  10. Invocation Interception Profile JStack Context DTrace JMap JInfo Histogram Memory

    File Socket

  11. 甜蜜中略带苦涩, 幸福中稍显忧伤

  12. https://gist.github.com/zhongl/5625338 ClassNotFoundException

  13. https://gist.github.com/zhongl/5625366 StackOverflowError

  14. 不用IDE写脚本很苦逼, 有木有? 总是要调整几次脚本才见效, 有木有? 多来几次尿都憋不住了, 有木有?

  15. HouseMD 交互式命令行

  16. $ housemd <jvm pid> INFO : Welcome to HouseMD 0.2.4

    INFO : connection established on 54321 housemd> _

  17. `trace TraceTarget.addOne`

  18. `trace TraceTarget$C+` trace sub class

  19. `trace -d TraceTarget$C+` get args and return

  20. `trace -s TraceTarget$C+` get invocation StackTrace

  21. Demo

  22. http://github.com/csug/housemd

  23. Tips & Traps

  24. limit < 100 timeout < 3 `trace` with `-l -t`

  25. trace unknown sub class instance `trace` with `Xxx+`

  26. SimpleName conflict `trace` with `-p com.xxx`

  27. INFO: Ended by error `last` for error ending

  28. class loaded by who from where `loaded` for class info

  29. port conflict `housemd -p <port>`

  30. Emacs edit mode, power by jline2 `Ctrl + r` for

    history search

  31. Backspace do not work Linux mode in SecureCRT

  32. chmod +w /tmp No echo cause by privilege

  33. housemd -h > help [command] test cases issues More help

    !!!

  34. https://github.com/CSUG/HouseMD/wiki/DevGuideCN Contribute to HouseMD

  35. Intro CSUG

  36. Thanks

  37. Scala In HouseMD TODO