Split benchmarks into two groups: baseline and overhead

[PROFeNoM]

Description

Reviewer checklist

• Test coverage seems ok.
• Appropriate labels assigned.

[pr-commenter]

Benchmarks

Benchmark execution time: 2024-02-29 13:47:35

Comparing candidate commit 85e7241 in PR branch alex/bench/groups with baseline commit 552b0ef in branch master.

Found 3 performance improvements and 1 performance regressions! Performance is the same for 178 metrics, 0 unstable metrics.

scenario:SymfonyBench/benchSymfonyBaseline

• 🟩 execution_time [-4.872ms; -4.821ms] or [-48.046%; -47.543%]

scenario:SymfonyBench/benchSymfonyBaseline-opcache

• 🟩 execution_time [-4.885ms; -4.818ms] or [-47.547%; -46.900%]

scenario:TraceSerializationBench/benchSerializeTrace

• 🟥 execution_time [+6.976µs; +9.624µs] or [+3.821%; +5.272%]

scenario:WordPressBench/benchWordPressBaseline

• 🟩 execution_time [-766.744µs; -576.316µs] or [-3.425%; -2.574%]