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    PerfView is a performance-analysis tool that helps isolate CPU- and memory-related performance issues.
    • Version:


      File Name:

      Date Published:


      File Size:

      5.3 MB

        PerfView is a performance analysis tool focusing on ETW information (ETL files) as well as CLR memory information (heap dumps). It can collect and view ETL in a variety of ways. Powerful grouping operators allow you to understand performance profiles in ways other tools can't. PerfView is used internally at Microsoft by a number of teams and is the primary performance investigation tool on the .NET Runtime team. Features include:
        • Non-invasive collection - suitable for use in live, production environments
        • Xcopy deployment - copy and run
        • Memory
          • Support for very large heaps (gigabytes)
          • Snapshot diffing
          • Dump files (.dmp)
        • CPU Performance
          • Support for managed, native, and mixed code
          • Can read XPerf logs
          • Profile diffing

        Updates in the 1.8.0 version include:

        • Various Win 10 ETW support
        • Support for opening VS2015 .DiagSession files
        • Suppport for new Self-describing ETW format.
        • Ability to look display the size of a IL DLL or EXE as a Heap in the viewer to understand why it is as big as it is
        • Support for resolving types and GC dumps for .NET Native executables.
        • Support for new symbol server format
        • Fixed issues displaying numbers HTML in non-english locals.
        • Support for showing the size of disk for a Directory in the stack viewer.
        • Added IIS checkbox to make collecting traces with detailed IIS information easy.
        • Overweight Analysis for determining why two traces differ quickly.
        • Support for EventSource V4.6 causality Tracking
        • Ability to capture every .NET Call being made (see .Net Calls in collection dialog)
        Updates in the 1.7.0 version include:

        • Much improved '(With Tasks) views handles async much better (will improve more in the future as well)
        • Added the 'Size' menu and the 'Directory Size' menu item for figuring out where disk space is going.
        • Enabled Goto Source for .NET Framework. Will fetch the source code from Microsoft's server so you can see inside .NET framework code.
        • Can turn on Network Capture to capture every network packet (See collection dialog box). Rudimentary parsing in the 'events' view
        • Net GC Allocations (as well as the original alot-ignore free) now possible for coarse sampling (the default)
        • Provider Browser in collection menu for exploring ETW events on the system (can look at manifset)
        • PerfView log from time of collection is storted in the file and is available from the 'TraceLog' view.
        • 'Set As Default Grouping Menu Item' lets you set your default stack viewer parameters.
        • In the events' view you can select events and issue the 'Highlight in Histogram' to see where they are visually in the histogram.

        Updates in the 1.6.0 version include:

        • Bug fixes for some crashing issues when collecting heap dumps (IndexOutOfRangeException)
        • Better stacks in some cases where the stack transitions into the kernel
        • /WPR option that allows you to generate data as the WPR tool would (to view in WPA)
        Updates in the 1.5.0 version include:
        • Support so that ETL data of EventSource Events take with PerfVIew are viable with the WPA tool.
        • Can log performance counters to the ETL file using the /MonitorPerformanceCounter switch
        • Support for collecing working set data every half second (MemInfo)
        • PerfVIew is smaller and faster

        Updates in the version include:
        • Added more /StopOn* options for stopping the circular buffer when paritcular events happen.
        • Support for events logged with WPP Software Tracing (place TMF files in an TMF directory)

    • Supported Operating System

      Windows 10 , Windows 7, Windows 8, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Vista

        • Supports .NET Framework versions 2.0 and above
        • PerfView itself is a V4.0 app and needs .NET V4.0 installed to run
        • No setup required, just xcopy and run.
        • Detailed instructions, including usage tutorials, can be found under "Help | User's Guide" in PerfView.