Overview The Performance Application Programming Interface (PAPI) offers a universal interface and methodology for gathering performance counter information from diverse hardware and software components. This includes major CPUs, GPUs, accelerators, interconnects, I/O systems, power interfaces, and even virtual cloud environments. Collaborations with industry leaders like AMD, Cray/HPE, IBM, Intel
Hardware performance monitoring counters have recently received a lot of attention. They have been used by diverse communities to understand and improve the quality of computing systems: for example, architects use them to extract application characteristics and propose new hardware mechanisms; compiler writers study how generated code behaves on particular hardware; software developers identify c
Likwid is a simple to install and use toolsuite of command line applications and a library for performance oriented programmers. It works for Intel, AMD, ARMv8 and POWER9 processors on the Linux operating system. There is additional support for Nvidia and AMD GPUs. There is support for ARMv7 and POWER8/9 but there is currently no test machine in our hands to test them properly. LIKWID Playlist (Yo
Recent posts: 07 Feb 2026 » Why I joined OpenAI 05 Dec 2025 » Leaving Intel 28 Nov 2025 » On "AI Brendans" or "Virtual Brendans" 22 Nov 2025 » Intel is listening, don't waste your shot 17 Nov 2025 » Third Stage Engineering 04 Aug 2025 » When to Hire a Computer Performance Engineering Team (2025) part 1 of 2 22 May 2025 » 3 Years of Extremely Remote Work 01 May 2025 » Doom GPU Flame Graphs 29 Oct 2
The core engine providing runtime insights to the Sysdig platform
Debugging benchmarks is something I've done for many years, and I've seen an amazing and comical variety of failure modes. The problem is that benchmark tools are often run without understanding what they are testing or checking that the results are valid. This can lead to poor development or architectural choices that haunt you later on. I previously summarized this situation as: casual benchmark
All of Percona’s open source software products, in one place, to download as much or as little as you need.
Longer summaries for each below. The “Analyzed” column shows whether I analyzed this from the System (beginning from devices and system tools) or the Application (beginning with application-level analyzers). At the top of the performance support chain I’m generally working from the System: most of the Application-centric analysis has been performed by developers (the customer) before the issue rea
We build and investigate software systems for multicore computers. We have analyzed and fixed scalability problems in existing software, such as the Linux kernel, and built scalable software from scratch, such as RadixVM and the Corey kernel. To facilitate this work and help identify scalability bottlenecks on multicore computers we have built analysis tools, like DProf. Current Projects The Scala
TIP1 - Overview of C/C++ Debugging/Tracing/Profiling ToolsAI-enhanced description This document provides an overview and comparison of various tools for debugging, profiling, and tracing C/C++ programs on Linux. It discusses concepts and implementations of debugging tools like gdb and Valgrind, profiling tools like gprof and perf, and tracing tools like strace, SystemTap, and LTTng. For each tool,
Recent posts: 07 Feb 2026 » Why I joined OpenAI 05 Dec 2025 » Leaving Intel 28 Nov 2025 » On "AI Brendans" or "Virtual Brendans" 22 Nov 2025 » Intel is listening, don't waste your shot 17 Nov 2025 » Third Stage Engineering 04 Aug 2025 » When to Hire a Computer Performance Engineering Team (2025) part 1 of 2 22 May 2025 » 3 Years of Extremely Remote Work 01 May 2025 » Doom GPU Flame Graphs 29 Oct 2
Valgrind's Tool Suite The Valgrind distribution includes the following debugging and profiling tools: Memcheck Cachegrind Callgrind Massif Helgrind DRD DHAT Experimental Tools Other Tools Memcheck Memcheck detects memory-management problems, and is aimed primarily at C and C++ programs. When a program is run under Memcheck's supervision, all reads and writes of memory are checked, and calls to mal
概要 Linuxのパフォーマンス解析ツールであるperfの使いかたの紹介 背景 個人的にperfよくできてると思うので紹介したいというのと、 パフォーマンスカウンタの読み方ってあんまり知られてないみたいなので、 それの解説を書きたい。 構成 perf について説明したあと、パフォーマンスカウンタの読みかた、見かた、を説明する。 perfとは何か Linuxに付いてくるプロファイラ。 man perf によると、 NAME ---- perf - Performance analysis tools for Linux と、書いてある。名前がひどいのでなんとかしてほしい。 perf の特徴 個人的には、手軽に使えるのが素晴らしいと思う。 2.6.31以降カーネルに標準で付いてる。(Ubuntuだとlinux-tools-common(TODO:あとで確認)で入るはず) 特殊な設定が必要無く、
Contributors (in historical order) Roman Dementiev, Thomas Willhalm, Otto Bruggeman, Patrick Fay, Patrick Ungerer, Austen Ott, Patrick Lu, James Harris, Phil Kerly, Patrick Konsor,Andrey Semin, Michael Kanaly, Ryan Brazones, Rahul Shah, Jacob Dobkins Introduction to Intel® PCM (Performance Counter Monitor) The complexity of computing systems has tremendously increased over the last decades. Hierar
Profiling is an alternative to benchmarking that is often more effective, as it gives you more fine grained measurements for the components of the system you're measuring, thus minimising external influences from consideration. It also gives the relative cost of various components, further discounting external influence. As a consequence of giving more fine grained information for a component, pro
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