Performance on Marouane LAARIF scribbles https://blog.laarif-marouane.com/tags/performance/ Recent content in Performance on Marouane LAARIF scribbles Hugo -- gohugo.io en-us marouane.laarif94@gmail.com (LAARIF Marouane) marouane.laarif94@gmail.com (LAARIF Marouane) Tue, 21 Oct 2025 23:03:01 +0100 JMH perfasm on Windows https://blog.laarif-marouane.com/posts/jmh-perf-windows/ Tue, 21 Oct 2025 23:03:01 +0100marouane.laarif94@gmail.com (LAARIF Marouane) https://blog.laarif-marouane.com/posts/jmh-perf-windows/ <p>When running JMH benchmarks, you&rsquo;ll usually see the profile <code>perfasm</code>. If you&rsquo;re on Windows, trying to run JMH with that profile fails, as it uses <code>perf</code>, which is a Linux tool, therefore on Windows we use <code>-xperasm</code> instead, which relies on <code>xperf</code>.</p> <p>To have xperf we need to install the <strong>Windows Performance Toolkit (WPT)</strong>, which contains <code>Xperf.exe</code>. The WPT is distributed as part of the <strong>Windows Assessment and Deployment Kit (ADK)</strong> or sometimes separately. And can be found here: <a href="https://learn.microsoft.com/en-us/windows-hardware/get-started/adk-install">https://learn.microsoft.com/en-us/windows-hardware/get-started/adk-install</a></p> When running JMH benchmarks, you’ll usually see the profile perfasm. If you’re on Windows, trying to run JMH with that profile fails, as it uses perf, which is a Linux tool, therefore on Windows we use -xperasm instead, which relies on xperf.

To have xperf we need to install the Windows Performance Toolkit (WPT), which contains Xperf.exe. The WPT is distributed as part of the Windows Assessment and Deployment Kit (ADK) or sometimes separately. And can be found here: https://learn.microsoft.com/en-us/windows-hardware/get-started/adk-install

After the installation, you can then run the benchmarks as administrator.

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