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).
90 lines
3.2 KiB
Python
90 lines
3.2 KiB
Python
#!/usr/bin/env python3
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# bench-playwright-0001.py
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# roleUtils validRoles / allowsNameFromContent: per-element role validation
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# during ARIA snapshot walks. Defect: Array.includes(role) on 70-entry const
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# array = O(k) per element. N elements x k roles = O(N*k) per snapshot.
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# Fix: Set.has(role) is O(1) per element -> O(N+k).
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import sys
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import time
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# 70+ ARIA roles mirroring validRoles in roleUtils.ts
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VALID_ROLES = [
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"alert", "alertdialog", "application", "article", "banner", "blockquote",
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"button", "caption", "cell", "checkbox", "code", "columnheader", "combobox",
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"complementary", "contentinfo", "definition", "deletion", "dialog",
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"directory", "document", "emphasis", "feed", "figure", "form", "generic",
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"grid", "gridcell", "group", "heading", "img", "insertion", "link", "list",
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"listbox", "listitem", "log", "main", "mark", "marquee", "math", "meter",
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"menu", "menubar", "menuitem", "menuitemcheckbox", "menuitemradio",
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"navigation", "none", "note", "option", "paragraph", "presentation",
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"progressbar", "radio", "radiogroup", "region", "row", "rowgroup",
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"rowheader", "scrollbar", "search", "searchbox", "separator", "slider",
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"spinbutton", "status", "strong", "subscript", "superscript", "switch",
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"tab", "table", "tablist", "tabpanel", "term", "textbox", "time", "timer",
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"toolbar", "tooltip", "tree", "treegrid", "treeitem",
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]
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# Roles most commonly present on real pages (bias toward frequent matches)
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ELEMENT_ROLE_POOL = ["button", "link", "heading", "textbox", "row", "cell",
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"img", "list", "listitem", "", "main", "navigation"]
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def bench_defective(n):
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"""Array.includes on validRoles per element -> O(N*k)."""
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# Simulate N page elements with attribute-derived roles
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roles_to_check = [ELEMENT_ROLE_POOL[i % len(ELEMENT_ROLE_POOL)] for i in range(n)]
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t0 = time.perf_counter()
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found = 0
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for role in roles_to_check:
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# Array.includes scan
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if role in VALID_ROLES: # python list __contains__ is O(k) linear
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found += 1
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dt = time.perf_counter() - t0
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assert found >= 0
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return dt
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def bench_fixed(n):
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"""Set.has on validRolesSet per element -> O(1) per element."""
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valid_roles_set = set(VALID_ROLES)
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roles_to_check = [ELEMENT_ROLE_POOL[i % len(ELEMENT_ROLE_POOL)] for i in range(n)]
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t0 = time.perf_counter()
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found = 0
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for role in roles_to_check:
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if role in valid_roles_set: # O(1)
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found += 1
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dt = time.perf_counter() - t0
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assert found >= 0
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return dt
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TRIALS = 3
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SIZES = [100, 500, 1000, 5000, 10000]
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def run():
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lines = []
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header = "=== playwright-0001: roleUtils Array.includes vs Set.has ==="
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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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def_times = [bench_defective(n) for _ in range(TRIALS)]
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fix_times = [bench_fixed(n) 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={n:<6}: 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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