An Unbelievable Demo
Recent posts: 22 Jul 2024 » No More Blue Fridays 24 Mar 2024 » Linux Crisis Tools 17 Mar 2024 » The Return of the Frame Pointers 10 Mar 2024 » eBPF Documentary 28 Apr 2023 » eBPF Observability Tools Are Not Security Tools 01 Mar 2023 » USENIX SREcon APAC 2022: Computing Performance: What's on the Horizon 17 Feb 2023 » USENIX SREcon APAC 2023: CFP 02 May 2022 » Brendan@Intel.com 15 Apr 2022 » Netfl
Dynamic tracing a Pony + Python program with DTrace
Wallaroo 0.6.o has been released! Check out the beautiful new API to go along with our Python 3 support. Learn more Your application probably has a performance problem. Or your app has a terrible bug. Or both. To find and fix these problems, many software developers use a profiler or a debugger. Profilers and debuggers are (usually) fantastic tools for solving performance and correctness problems.
DTrace for Linux 2016
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Frida • A world-class dynamic instrumentation toolkit
Dynamic instrumentation toolkit for developers, reverse-engineers, and security researchers. Scriptable Inject your own scripts into black box processes. Hook any function, spy on crypto APIs or trace private application code, no source code needed. Edit, hit save, and instantly see the results. All without compilation steps or program restarts. Portable Works on Windows, macOS, GNU/Linux, iOS, wa
Profile Ruby 2.0 apps using DTrace - part 2
This is Part - 2 in series of articles we are writing on Dtrace. If you haven't already - do read Part 1. Running Dtrace scripts Before we delve deeper into guts of Dtrace, one of the questions which I often get asked is, How can I profile one off programs (i.e not a application running in background) with Dtrace. There are basically couple of ways you can fire Dtrace. One of them is obviously str
Profile Ruby 2.0 apps using DTrace - Part 1
This is a series of blog posts we are going to do in tutorial format, this is Part 1 of our tutorial on Dtrace. DTrace is awesome. If your operating system supports it, using DTrace can give incredible insight into processes that are running on your system. If you are still not convinced about its usefullness you should checkout - How Dtrace helped twitter identify bottlenecks, Profiling Rails sta
るびま
『るびま』は、Ruby に関する技術記事はもちろんのこと、Rubyist へのインタビューやエッセイ、その他をお届けするウェブ雑誌です。 Rubyist Magazine について 『Rubyist Magazine』、略して『るびま』は、日本 Ruby の会の有志による Rubyist の Rubyist による、Rubyist とそうでない人のためのウェブ雑誌です。 最新号 Rubyist Magazine 0058 号 バックナンバー Rubyist Magazine 0058 号 RubyKaigi 2018 直前特集号 Rubyist Magazine 0057 号 RubyKaigi 2017 直前特集号 Rubyist Magazine 0056 号 Rubyist Magazine 0055 号 Rubyist Magazine 0054 号 東京 Ruby 会議 11 直
革命の日々！ ruby 2.0 の dtrace featureを systemtap から使う方法
この記事は Ruby の Advent Calendar に参加しようとして用意しましたが、間に合わなかったものです。 Ruby 2.0でdtrace対応が入りました。この機能はLinuxのsystemtapからもアクセス出来ます。でも、どこにもドキュメントがないのでいっちょ使い方を解説しようという、そういう趣旨の記事です。 まず、基本の使い方ですが、以下の様に process(プロセス名).provider("ruby").mark(Rubyで定義されてるprobe名) で引っ掛けるイベント名を 記述して、tapscriptを記述します ruby.stp probe process("./ruby").provider("ruby").mark("find__require__entry") { printf("%s %s %d\n", user_string($arg1), user_
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DTrace and Python