A review of the suite after the new operations:
- Dead helpers and duplicate nodes go; the lineage reset and swap
nodes are constructors of reset and swap-shape.
- Repeated helpers are shared: grid boards (tho/add-grid-frame,
tho/place-in-grid-columns), n/nested-head-under, n/child-shape,
r/sync-cascade (the benchmark uses it too), the frontend fixture and
fill helpers, and the plugin getMainComponent.
- Runner tests that repeated cases B, C and D go.
- Comments say what the code does, and the wrong ones are fixed.
- Case K's remote edit painted red on red and its unedited variants
asserted nothing; it starts grey and every variant asserts.
- F43 is pinned in one case, AJ, by the value one undo leaves. L, M, Q
and K get real frame sizes, since their pins depended on when the
100 ms layout buffer flushed.
- make-nested-component takes a level count and depth-sweep gives each
depth once, so K, Q, R, T and W stop running depth 1 twice.
- The completion-contract tests no longer depend on fixed pauses or
on how the watcher batches its events.
Benchmark against the baseline (lower quantile): ratios 0.92 to 1.03,
no world flagged.
The coming refactors and fixes change sync code, and a slowdown must be
seen and explained in the commit that causes it. A JVM benchmark now
times component sync on fixed-size worlds:
- one main into 10, 100 and 1000 copies;
- a change in the deepest of three nesting levels;
- a chain of dependents (a in b in c, with copies of each);
- a variant switch in a main with 100 copies;
- a library update into a file with 500 copies.
Each world is built once; only the sync an edit causes is timed, run
to a fixpoint as the frontend watcher does. Each checks its result, so
a world that synced nothing fails instead of timing nothing.
`scripts/bench-components record` writes the baseline, recorded here on
the code before this commit; `scripts/bench-components` compares against
it and exits 1 when a world is more than 10% slower. It compares the lower
quantile: with the devenv running, the mean of the same code moved
from 0.41 to 1.13 of the baseline, the lower quantile by under 12%.
