KDAB/hotspot
The Linux perf GUI for performance analysis. observed · 2026-08-28
Health v2 · maintenance only
71/100
- Activity 82
- Release rhythm 40
- Longevity 100
Flags: no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 224
- age_days: 3543
- days_rel: 187
- days_push: 113
- n_releases_24m: 2
Adoption not part of the score
5140 stars · 288 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
Hotspot is a standalone Qt-based GUI for analyzing Linux perf performance data, providing flame graphs, timelines, caller/callee views, and off-CPU analysis. It aims to be a KCachegrind-like UI around Linux perf with support for additional performance data formats.
Use cases
- visualize perf.data files with flame graphs
- analyze CPU profiling results on Linux
- perform off-CPU analysis to find blocking waits
- filter profiling results by time, process, or thread
- profile C++ and Rust applications with symbol demangling
- record and analyze performance data without memorizing perf CLI options
When to choose
- you profile Linux applications with perf and want a graphical interface
- you need flame graphs, bottom-up/top-down views, and timeline filtering for perf data
- you work with C++ or Rust code and need inlined function and mangled-name support
- you want off-CPU analysis and tracepoint inspection in one tool
When to avoid
- you need profiling on Windows or macOS - Hotspot is Linux-only
- you prefer command-line tools or terminal-based workflows
- you need a non-GUI/headless profiling analysis pipeline
- you require formats beyond Linux perf and related data sources
Facets
application · maturity active
gui monitoring benchmarking developer-tools developer-tools performance operating-systems cpp profiler perf flamegraph cpu-profiling qt off-cpu-analysis c-plus-plus linux desktop
1 source
- readme: https://github.com/KDAB/hotspot · fetched 2026-08-28 · 4a44e3f1cde6
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| KDAB/hotspot | main | 71 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem