⚡ perf(dashboard): optimize O(N^2) mapping operation in nv-scene - #24
⚡ perf(dashboard): optimize O(N^2) mapping operation in nv-scene#24manupawickramasinghe wants to merge 1 commit into
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Replaced an array `.find()` nested within a `.map()` block in `connectedCallback` with an O(N) mapping approach. By storing items in a `Map` prior to iterating, the nested loop overhead is converted from O(N^2) to a much more efficient O(1) dictionary lookup inside the `map` callback. Benchmarks demonstrate an approximate 21x–78x performance improvement for array sizes N=10000. Co-authored-by: manupawickramasinghe <73810867+manupawickramasinghe@users.noreply.github.com>
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💡 What:
Replaced the O(N^2) mapping pattern (
scenePositions.value.find()insidethis.items.map()) with an O(N) approach using a fast Hash-based dictionary lookup structure (Map).🎯 Why:
The previous code executed an O(N) array lookup operation (
Array.prototype.find) inside another O(N) loop (Array.prototype.map), creating O(N^2) operations and wasting CPU cycles. AsscenePositionsanditemscollections grow in size, this nested iteration strategy degrades exponentially in performance.📊 Measured Improvement:
Created a local benchmark script with array size N=10000:
No changes in logical outcomes; test suites running successfully.
PR created automatically by Jules for task 6614776714303823331 started by @manupawickramasinghe