KCachegrind
KCachegrind: Open-source Linux viewer for detailed Valgrind profile analysis. Ranked #14 of 28 in Profiling Software by our editors (7.9/10); pricing: Free plan; best for linux users visualizing Callgrind and Cachegrind data.
At a glance
- Editor score7.9 / 10
- PricingFree plan
- Best forLinux users visualizing Callgrind and Cachegrind data
- Free planYes
- Paid fromFree
- Profiling modesInstrumentation
- Facts checked24 Sep 2026
Where it wins
- Interactive call-graph navigation with caller and callee analysis
- Compares event counters and function costs in multiple profile views
- Annotated source views plus filtering and search for profile data
Where it doesn't
- Linux desktop deployment limits platform flexibility
- Visualizes profiles but does not collect profiling data itself
- Support is provided through documentation and community channels
Our verdict on KCachegrind
KCachegrind is KDE open-source desktop software for examining profiling output from Valgrind’s Callgrind and Cachegrind tools. It is aimed at developers who need to investigate CPU-related performance data on Linux, with views that connect call relationships, function costs, event counters, and source code annotations. The application is a viewer within a profiling workflow, rather than the component that gathers the measurements.
The published model is open source with a free plan and no paid tiers described. Its direct ecosystem fit is Valgrind: KCachegrind visualizes Callgrind profiling output and Cachegrind data. That division of responsibility matters for setup, because profiling is performed by Valgrind tools before KCachegrind can display and compare the resulting data. Teams already producing compatible files can use the viewer to continue analysis in a desktop workflow; users seeking one application that both collects and explores profiles should consider a different tool.
Analysis depth is the main reason to choose KCachegrind. Interactive call-graph navigation, flat-profile and function-cost views, caller and callee relationships, event-counter comparisons, annotated source-code views, and filtering or searching give developers several ways to isolate hotspots. Deployment is desktop-based on Linux, with documentation and community support channels. KCachegrind fits solo developers through enterprise teams that work with Valgrind output, but it is less suitable for organizations requiring a standalone collector, a non-Linux deployment, or a different support model.
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KCachegrind pricing
KCachegrind fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Profiling modes | Instrumentation |
| Supported languages | Not verified |
| CPU profiling | Yes |
| Memory profiling | Not verified |
| Thread profiling | Not verified |
| Deployment model | Desktop |
| Deployment | Desktop |
| Platforms | Linux |
| Support | Docs, Community |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 2 integrations: Valgrind Callgrind, Valgrind Cachegrind |
| Pricing | Free plan |
| Website | kde.org |
| Facts checked | 24 Sep 2026 |
KCachegrind integrations
KCachegrind lists 2 integrations on its own site.
- Valgrind Callgrind
- Valgrind Cachegrind
Alternatives to KCachegrind
- Intel VTune ProfilerA free profiler covering CPU, memory, threading, GPU/NPU, I/O, MPI, and OpenMP.9.4
- AMD uProfA free AMD-focused profiler with broad CPU, system, threading, power, GPU, and tracing analysis.9.2
- PyroscopeA flexible profiler for teams that need continuous CPU and memory visibility at scale.9.1
See all KCachegrind alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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