How GCC changes dispatch performance
A post published on June 8, 2026 compares std::variant with virtual dispatch: the former went from 28% slower on GCC 11 to 50% faster on GCC 12, with only the compiler changed.
Source: Como a standard library afeta o desempenho de dispatch (shubhankar-gambhir.github.io). Text prepared with AI from this source.
What happened and what to do
Published on June 8, 2026, the post compares the performance of std::variant and virtual dispatch across GCC versions. In the example, std::variant was 28% slower on GCC 11 and 50% faster on GCC 12, while the only change was the compiler.
For a company, this calls for measuring application performance on the compiler and standard library versions used in production before selecting a dispatch strategy. A team could implement reproducible benchmarks, regression monitoring, and a validation process for upgrades, focusing on software's critical paths.
How the consultancy can help
Wendelmaques can diagnose critical paths and relevant compiler and standard library versions, define benchmarks and comparison criteria, and implement performance collection and monitoring. The scope can include ongoing operation of these checks.
Next step
Send a short description of your application, critical paths, and build environment to receive a scoped proposal.
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