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JetBrains dotPeek 2025.3.4 is a dedicated .NET performance profiler published by JetBrains s.r.o. and distributed through 13 incremental releases, the most recent of which refines sampling accuracy, timeline visualization, and memory allocation tracking for applications targeting .NET Framework 4.6+, .NET Core, and .NET 5/6/7/8. Engineers invoke the tool when they need to locate hot paths, measure wall-clock versus CPU time, compare snapshot deltas, and attribute costs to individual IL instructions without altering source code or recompiling assemblies. Typical use cases include pre-production regression testing of ASP.NET web APIs, optimizing algorithmic bottlenecks inside desktop utilities, auditing micro-service latency in containerized environments, and producing evidence-based reports for code-review or stakeholder sign-off. The profiler integrates with JetBrains Rider, ReSharper, and TeamCity, allowing seamless hand-off from static analysis to dynamic measurement, while its standalone viewer lets QA teams share interactive flame graphs and call-tree exports with developers who do not own the full IDE. Because dotPeek records live telemetry at configurable sampling frequencies, it suits both long-running server workloads and short-lived unit-test fixtures, and its differential mode highlights performance shifts introduced by nightly builds or dependency upgrades. As part of the development-tool category, the utility complements rather than replaces JetBrains’ decompiler namesake, focusing exclusively on runtime behavior rather than static assembly inspection. The software is available for free on get.nero.com, with downloads provided via trusted Windows package sources (e.g., winget), always delivering the latest version, and supporting batch installation of multiple applications.
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