Gate cost
gstack now prices its paid PR gate for free, from runs it already recorded
gstack now prices its paid pull request gate for free, from runs it already recorded. A full gate costs about 93 dollars, almost all of it spent on Fable 5.1, the model under test.
Per merge
A screening rule would cut the gate bill per merged PR almost in half
Across 92 merges, today's test selection costs about 79 dollars per merged pull request. A screening rule would cut that to about 45, though those figures stay provisional until a real hunk classifier lands.
Merge train
A seeded merge-train model prices screening by the week
A second model simulates a merge train, where unscreened pull requests carry defects four times as often and gates flake. Each red build pays for a bisect. It prices screening all, half, or none.
Your gate
Every gate still runs what it ran before
CHANGELOG.mdfirst step of a plan to cut the paid gate bill about 4xEvery gate still runs what it ran before. This is the first step of a plan to cut the paid gate bill to about a quarter. What does one full run of your own test suite cost?
