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ZJIT: Create JIT Diff Skeleton #823
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- added a parent issue
on Oct 20, 2025 Diff of JSON stats that have been manually run and dumped sounds like a great first project
I talked with Alan today and learned that most folks on the team already have a "build multiple ruby versions" script that seems to work for them.
It seems like
ruby-benchalready has some mechanism to compare two ruby versions, but it's not for ZJIT stats yet. This is just a mental note here that there may be a light lift to make this possible. And even before we do a fancy diff, we could do something simpler -- list the changes from zjit stats side by side in two columns representing ruby versions, sort by "percent changed" and get fancier from there.Here is the relevant documentation to compare two ruby versions with ruby-bench.
Do ruby#16160 and ruby#16160 satisfy the needs, or do we still have problems that aren't addressed yet?
Create the initial skeleton structure in ruby, should be stored in
/tool/.Define the following components and implement nothing. Just add print statements about what a user should do waiting for key input between each. (At worst case, this is now a workflow for how to create diffs between ZJIT versions in a standardized manner, automation will come as needed.)
Components should be something like: