Worldgen profiling

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Worldgen profiling

By MisodeOwner

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Adds custom JFR events to profile world generation

Mod Loaders
Minecraft
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About

Description

Creating a JFR report

  1. Launch Minecraft with Fabric.
  2. Download the latest release and add it in the mods folder.
  3. Start by running the /jfr start command and generate new terrain.
  4. Run /jfr stop. This will create a file at .minecraft/debug/client-*.jfr.

Analyzing the JFR report

  1. Download and install the JDK Mission Control tool.
  2. In Mission Control, navigate to File > Open File... and select the JFR report.
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  3. Select the Even Browser Page in the Outline.
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  4. Find the Minecraft > World Generation > Feature Placement event type, and select it.
  5. Create a new page with just this event type.
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  6. Because the JFR file has an event for each feature placement per chunk, it is useful to group events.
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  7. In this view, you can show average and total durations. It is now really easy to see which features are the bottlenecks.
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