russell@unturf.com
9a0253e724
selenium-0001: SessionCapabilitiesMutator list.contains O(NxM) -> LinkedHashSet O(N+M). Grid Node session mutation hot path. Bench: 192x at N=M=1000. selenium-0002: ChromiumOptions merge helpers consolidate four list.contains loops behind addArgumentsUnique/addEncodedExtensionsUnique. Bench: 254x at N=M=1000. playwright-0001: roleUtils validRoles / allowsNameFromContent Array.includes on 20-70 element constant arrays per element. Converted to Set<string> at module load. Bench: 11x at N=10000 elements. webdriverio-0001: xpath-conditions extractOrConditions orMatches.find + values.includes per regex match -> Map<attr, Set<values>>. Bench: 6x at K=V=60 in the 'mobileSelectorPerformanceOptimizer'. Each defect ships: ticket, patch with complexity-gate header, Python benchmark + correctness test, Makefile, outreach brief. All 16 tests pass. UNDF IDs: 1276 (playwright), 1277 (selenium-0001), 1288 (selenium-0002), 1289 (webdriverio).
65 lines
1.9 KiB
Python
65 lines
1.9 KiB
Python
#!/usr/bin/env python3
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# bench-selenium-0001.py
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# SessionCapabilitiesMutator: ArrayList.contains inside forEach vs LinkedHashSet dedup.
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#
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# Models the Grid Node session mutator merging client-requested caps with slot
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# stereotype caps. Defect: dedup via list.contains is O(M) per iteration; N
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# iterations give O(N*M). Fixed version pre-builds a set for O(1) dedup.
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import sys
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import time
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def bench_defective(n, m):
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"""Model forEach(arg -> if !stereotype.contains(arg) stereotype.add(arg))."""
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stereotype = [f"--stereo-{i}" for i in range(m)]
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incoming = [f"--inc-{i}" for i in range(n)]
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t0 = time.perf_counter()
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for arg in incoming:
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if arg not in stereotype:
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stereotype.append(arg)
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return time.perf_counter() - t0
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def bench_fixed(n, m):
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"""Pre-built set for O(1) dedup; list kept for ordering."""
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stereotype = [f"--stereo-{i}" for i in range(m)]
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incoming = [f"--inc-{i}" for i in range(n)]
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t0 = time.perf_counter()
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seen = set(stereotype)
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for arg in incoming:
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if arg not in seen:
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seen.add(arg)
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stereotype.append(arg)
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return time.perf_counter() - t0
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TRIALS = 3
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SIZES = [10, 50, 100, 500, 1000]
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def run():
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lines = []
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header = "=== selenium-0001: SessionCapabilitiesMutator List.contains vs Set ==="
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print(header)
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lines.append(header)
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for n in SIZES:
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m = n # N=M worst case: all incoming are new relative to stereotype
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def_times = [bench_defective(n, m) for _ in range(TRIALS)]
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fix_times = [bench_fixed(n, m) for _ in range(TRIALS)]
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d_ms = min(def_times) * 1000
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f_ms = min(fix_times) * 1000
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speedup = d_ms / f_ms if f_ms > 0 else float("inf")
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line = f"N=M={n:<5}: defective={d_ms:.3f}ms fixed={f_ms:.3f}ms speedup={speedup:.1f}x"
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print(line)
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lines.append(line)
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sys.stdout.flush()
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return lines
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if __name__ == "__main__":
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run()
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