Fix several failures.

[ericsnowcurrently]

A few bugs have crept in with some of my recent changes. Part of the problem is that there hasn't been great test coverage for a bunch of pyperformance code. In this PR I've added a bunch of testing. I've also fixed a number of problems.

[gvanrossum]

I wonder how much of my Windows woes this fixes? I'll give it a try. @ericsnowcurrently please note that I accidentally pushed a change to greenlet==2.0.0a2. I meant to create a PR but due to my git clumsiness pushed to main. Sorry. But I think it's the right fix, so I hope we can keep it.

[ericsnowcurrently]

I wonder how much of my Windows woes this fixes? I'll give it a try.

+1

@ericsnowcurrently please note that I accidentally pushed a change to greenlet==2.0.0a2. I meant to create a PR but due to my git clumsiness pushed to main. Sorry. But I think it's the right fix, so I hope we can keep it.

No worries.

[gvanrossum]

I still have four failing benchmarks on Windows:

• dulwich_log
• genshi
• sqlalchemy_declarative
• sqlalchemy_imperative

The other failures I had were due to the broken --python flag (#107). I also still have the psutil issue (#148).

The biggest mystery is greenlet (the failing dependency for the sqlalchemy benchmarks), for which I can make the install pass by causing a cached wheel to appear in pip's cache. I do that by running the following in the cpython repo (whose binary is also the one I use to run the benchmarks):

.\python.bat -m pip cache purge
.\python.bat -m pip uninstall greenlet==2.0.0a2
.\python.bat -m pip install greenlet==2.0.0a2

[brandtbucher]

Just a note: you can use the --no-cache-dir option to ignore cached wheels, and --force-reinstall to skip the uninstall step. So...

.\python.bat -m pip install --no-cache-dir --force-reinstall greenlet==2.0.0a2

...should do it in one command.

[gvanrossum]

Remembering those options might be harder than the original steps. :-)

Let's continue the discussion in faster-cpython/ideas#333