performance testing

Richard Eisenberg rae at
Tue Mar 10 23:05:04 UTC 2020

Hi all,

I'm very confused by how to do performance testing.

I have a patch that seems to cause a performance regression. So I built the patch locally (`validate` flavor, with `make`) and then reproduced the regression. Good. Then, I make a small change, rebuild, commit, and then test. But now it seems that the baseline has changed. (This took some time to discover after seemingly non-deterministic results!)

So: how can I make several different commits, with different experiments, switch between them at will, all without changing my baseline? I do *not* have the magic "metric decrease" bit in my commit message. Or, at least, I didn't put it there.


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