Benchmarks in this directory are separate from the correctness test suites. make installcheck / make check do not invoke them; they run only through make perfcheck (or when invoked directly), so CI and normal test iteration are unaffected.

# All benchmarks under perf/*_perf.py:
make IS_DEV=1 USE_PGXS=1 perfcheck

# A single benchmark with custom parameters:
PATH="/usr/local/pgsql/bin:$PATH" \
    python3 -W ignore::DeprecationWarning \
    perf/<name>_perf.py --rows 100000

# Options for any benchmark:
python3 perf/<name>_perf.py --help

Drop a *_perf.py file into this directory; it is picked up automatically by the PERFCHECKS = $(sort $(wildcard perf/*_perf.py)) glob in the Makefile. Conventions:

• Start the script with a short module docstring describing what it measures and how each configuration is produced.
• Print # commit = ... and the parameter settings before the first result row.