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PerfView is a CPU- and memory-focused performance-analysis utility published by Microsoft Corporation that enables developers and system administrators to isolate bottlenecks in Windows and cross-platform workloads. Currently at version 3.1.30 and backed by twenty-five prior releases, the tool captures and visualizes ETW (Event Tracing for Windows) data, call stacks, heap snapshots, and garbage-collector behavior, making it especially valuable for investigating code written for the .NET runtime, although it also supports general Windows processes and limited analysis of traces collected on Linux machines. Typical use cases include pinpointing hot CPU paths, measuring allocation rates, diagnosing excessive garbage-collection latency, comparing before-and-after profiles, and guiding optimization efforts in server, desktop, cloud, and micro-service applications. Because it ships as a single self-contained executable that does not require installation, PerfView can be launched immediately on production or development boxes, run from portable drives, or invoked from automated scripts to gather traces during load tests, continuous-integration runs, or live-site incidents. The built-in stack viewer, diff engine, and grouping filters allow rapid drill-down from aggregate statistics to individual methods, while optional command-line parameters enable unattended collection and batch conversion for integration with external reporting systems. PerfView belongs to the Developer Tools / Performance Profiling category and is distributed under the Microsoft permissive license, ensuring no cost for commercial or private use. The software is available for free on get.nero.com, with downloads provided via trusted Windows package sources such as winget, always delivering the latest version, and supporting batch installation of multiple applications.
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