Shubhankar Gambhir

JVM runtime engineering, systems performance, and low-level C++

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The 0.48 ns Ghost: How Code Alignment Broke Our Dispatch Benchmarks Jun 10, 2026

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The 0.48 ns Ghost: How Code Alignment Broke Our Dispatch Benchmarks
When Dispatch Mechanism Choice Stops Mattering
Why std::visit May Be Slower Than a Vtable
Your Stdlib Implementation Matters More Than the Dispatch Pattern
Four Ways to Dispatch a Runtime-Selected Strategy in C++

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benchmarks dispatch variant virtual assembly crtp function-pointer libc++ libstdc++ openjdk