home/categories/debugging/antonykamp-cc-truffle-performance-plugin-skills-detecting-deoptimizations-skill-md
debuggingtools

detecting-deoptimizations

Traces deoptimization events where execution falls back from compiled code to interpreter. Use to detect deoptimization loops, unstable assumptions, and type instability. Zero transfers in steady-state is the goal. Many transfers indicate severe performance problems. Critical for diagnosing compilation instability.

antonykamp
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antonykamp
Updated 1/17/2026
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quick start

Installation and usage

Traces deoptimization events where execution falls back from compiled code to interpreter. Use to detect deoptimization loops, unstable assumptions, and type instability. Zero transfers in steady-state is the goal. Many transfers indicate severe performance problems. Critical for diagnosing compilation instability.

Installation
$ install --globalskills.sh
Usage

Once installed, you can use this skill by running the following command in your terminal:

skills use detecting-deoptimizations