ui.load() has been available since d83ca854 and at the time of writing isn't
available on stable branch breaking benchmarking newer stable revisions.
Add historical portability policy note on contrib/benchmarks
This allows us to write doctests depending on a ui object, but not on global
configs.
ui.load() is a class method so we can do wsgiui.load(). All ui() calls but
for doctests are replaced with ui.load(). Some of them could be changed to
not load configs later.
Airspeed velocity (ASV) is a python framework for benchmarking Python packages
over their lifetime. The results are displayed in an interactive web frontend.
Add ASV benchmarks for mercurial that use contrib/perf.py extension that could
be run against multiple reference repositories.
The benchmark suite now includes revsets from contrib/base-revsets.txt with
variants, perftags, perfstatus, perfmanifest and perfheads.
Installation requires asv>=0.2, python-hglib and virtualenv
This is part of PerformanceTrackingSuitePlan
https://www.mercurial-scm.org/wiki/PerformanceTrackingSuitePlan
