{ "schemaVersion": 1, "benchmark": { "id": "istimthal-synthetic-showcase-72-v1", "matrix": { "scenarios": [ "mixed-fleet", "memory-pressure", "scale-pressure" ], "modes": [ "balanced", "safe" ], "cpuDemandPercentages": [ 100, 120, 140 ], "candidateBudgets": [ 64, 128, 256, 512 ] }, "declaredCaseCount": 72, "methods": { "baseline": "Input-order first fit; cheapest feasible new host", "strongerBaseline": "Five-rule heuristic portfolio", "candidate": "Bounded demonstration search" } }, "provenance": { "generatedAt": "2026-10-05T15:54:45.250Z", "sourceSha256": { "src/demo-model.js": "f1d53abaa1039156edd837386d283b6fc7ec2ae575ba95cc3156feac0de62427", "src/company-demo-service.js": "67893db887595b0d9e2c0e3623d9d98dc21c25edd70f30977cade9c318a4de7d", "scripts/run-showcase-benchmark.mjs": "eda57b02df5437187c8293b80767ebbf8f4620ec8cb8634fb53a82e508fe77c9", "scripts/verify-showcase-benchmark.mjs": "afed7e444c18468b738319c08b9ad5e73cda5e6de875168220ebd367c22c854b" }, "environment": { "node": "v22.23.3", "platform": "darwin", "architecture": "arm64", "osRelease": "24.6.0", "cpuModel": "Apple M4 Pro", "logicalCpuCount": 14 }, "operatorCommand": "node scripts/run-showcase-benchmark.mjs --output " }, "timingPolicy": { "unit": "milliseconds", "repetitionsPerCase": 1, "excludedWarmupRuns": 1, "hardExecutionDeadlineMilliseconds": 5000, "hardExecutionDeadlineScope": "Whole configuration: worker startup, both references, candidate search, independent rechecks and service rerun. The parent interrupts overdue workers; this is an offline limit, not a server latency guarantee.", "measurement": "Local elapsed selection and separate post-selection verification. Internal search verification is included in selection time; worker startup, network and operator I/O are excluded from method timings. 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128 }, "timings": { "baselineSelection": 0.4, "strongerBaselineSelection": 1.105, "candidateSelection": 12.142, "postSelectionVerification": 0.496, "serviceRerun": 10.155, "wholeConfiguration": 41.73 }, "comparison": { "costDifference": 131, "costReductionPercent": 24.3, "eligible": true }, "strongerComparison": { "costDifference": 16, "costReductionPercent": 3.77, "eligible": true }, "outcome": "improved" }, "failures": [] }, { "id": "scale-pressure:safe:cpu100:budget256", "settings": { "scenario": "scale-pressure", "mode": "safe", "cpuDemandPercent": 100, "budget": 256 }, "workloadCount": 64, "reserveFraction": 0.8, "status": "completed", "result": { "baseline": { "cost": 539, "hostCount": 35, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "strongerBaseline": { "cost": 424, "hostCount": 12, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "candidate": { "cost": 403, "hostCount": 13, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "evaluations": { "baseline": 1, "strongerBaseline": 5, "candidate": 256, "candidateFeasible": 256 }, "timings": { "baselineSelection": 0.404, "strongerBaselineSelection": 1.143, "candidateSelection": 20.511, "postSelectionVerification": 0.467, "serviceRerun": 14.102, "wholeConfiguration": 54.442 }, "comparison": { "costDifference": 136, "costReductionPercent": 25.23, "eligible": true }, "strongerComparison": { "costDifference": 21, "costReductionPercent": 4.95, "eligible": true }, "outcome": "improved" }, "failures": [] }, { "id": "scale-pressure:safe:cpu100:budget512", "settings": { "scenario": "scale-pressure", "mode": "safe", "cpuDemandPercent": 100, "budget": 512 }, "workloadCount": 64, "reserveFraction": 0.8, "status": "completed", "result": { "baseline": { "cost": 539, "hostCount": 35, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "strongerBaseline": { "cost": 424, "hostCount": 12, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "candidate": { "cost": 400, "hostCount": 12, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "evaluations": { "baseline": 1, "strongerBaseline": 5, "candidate": 512, "candidateFeasible": 512 }, "timings": { "baselineSelection": 0.448, "strongerBaselineSelection": 1.216, "candidateSelection": 31.137, "postSelectionVerification": 0.449, "serviceRerun": 12.797, "wholeConfiguration": 63.781 }, "comparison": { "costDifference": 139, "costReductionPercent": 25.79, "eligible": true }, "strongerComparison": { "costDifference": 24, "costReductionPercent": 5.66, "eligible": true }, "outcome": "improved" }, "failures": [] }, { "id": "scale-pressure:safe:cpu120:budget64", "settings": { "scenario": "scale-pressure", "mode": "safe", "cpuDemandPercent": 120, "budget": 64 }, "workloadCount": 64, "reserveFraction": 0.8, "status": "completed", "result": { "baseline": { "cost": 608, "hostCount": 41, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "strongerBaseline": { "cost": 434, "hostCount": 13, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "candidate": { "cost": 426, "hostCount": 13, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "evaluations": { "baseline": 1, "strongerBaseline": 5, "candidate": 64, "candidateFeasible": 64 }, "timings": { "baselineSelection": 0.474, "strongerBaselineSelection": 1.575, "candidateSelection": 7.414, "postSelectionVerification": 0.417, "serviceRerun": 6.956, "wholeConfiguration": 34.609 }, "comparison": { "costDifference": 182, "costReductionPercent": 29.93, "eligible": true }, "strongerComparison": { "costDifference": 8, "costReductionPercent": 1.84, "eligible": true }, "outcome": "improved" }, "failures": [] }, { "id": "scale-pressure:safe:cpu120:budget128", "settings": { "scenario": "scale-pressure", "mode": "safe", "cpuDemandPercent": 120, "budget": 128 }, "workloadCount": 64, "reserveFraction": 0.8, "status": "completed", "result": { "baseline": { "cost": 608, "hostCount": 41, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "strongerBaseline": { "cost": 434, "hostCount": 13, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "candidate": { "cost": 426, "hostCount": 13, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "evaluations": { "baseline": 1, "strongerBaseline": 5, "candidate": 128, "candidateFeasible": 128 }, "timings": { "baselineSelection": 0.482, "strongerBaselineSelection": 1.484, "candidateSelection": 13.208, "postSelectionVerification": 0.585, "serviceRerun": 10.878, "wholeConfiguration": 44.107 }, "comparison": { "costDifference": 182, "costReductionPercent": 29.93, "eligible": true }, "strongerComparison": { "costDifference": 8, "costReductionPercent": 1.84, "eligible": true }, "outcome": "improved" }, "failures": [] }, { "id": "scale-pressure:safe:cpu120:budget256", "settings": { "scenario": "scale-pressure", "mode": "safe", "cpuDemandPercent": 120, "budget": 256 }, "workloadCount": 64, "reserveFraction": 0.8, "status": "completed", "result": { "baseline": { "cost": 608, "hostCount": 41, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "strongerBaseline": { "cost": 434, "hostCount": 13, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "candidate": { "cost": 424, "hostCount": 12, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "evaluations": { "baseline": 1, "strongerBaseline": 5, "candidate": 256, "candidateFeasible": 256 }, "timings": { "baselineSelection": 0.436, "strongerBaselineSelection": 1.638, "candidateSelection": 22.472, "postSelectionVerification": 0.455, "serviceRerun": 18.887, "wholeConfiguration": 61.678 }, "comparison": { "costDifference": 184, "costReductionPercent": 30.26, "eligible": true }, "strongerComparison": { "costDifference": 10, "costReductionPercent": 2.3, "eligible": true }, "outcome": "improved" }, "failures": [] }, { "id": "scale-pressure:safe:cpu120:budget512", "settings": { "scenario": "scale-pressure", "mode": "safe", "cpuDemandPercent": 120, "budget": 512 }, "workloadCount": 64, "reserveFraction": 0.8, "status": "completed", "result": { "baseline": { "cost": 608, "hostCount": 41, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "strongerBaseline": { "cost": 434, "hostCount": 13, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "candidate": { "cost": 424, "hostCount": 12, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "evaluations": { "baseline": 1, "strongerBaseline": 5, "candidate": 512, "candidateFeasible": 512 }, "timings": { "baselineSelection": 0.42, "strongerBaselineSelection": 1.552, "candidateSelection": 34.232, "postSelectionVerification": 0.496, "serviceRerun": 13.757, "wholeConfiguration": 70.223 }, "comparison": { "costDifference": 184, "costReductionPercent": 30.26, "eligible": true }, "strongerComparison": { "costDifference": 10, "costReductionPercent": 2.3, "eligible": true }, "outcome": "improved" }, "failures": [] }, { "id": "scale-pressure:safe:cpu140:budget64", "settings": { "scenario": "scale-pressure", "mode": "safe", "cpuDemandPercent": 140, "budget": 64 }, "workloadCount": 64, "reserveFraction": 0.8, "status": "completed", "result": { "baseline": { "cost": 655, "hostCount": 43, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "strongerBaseline": { "cost": 487, "hostCount": 14, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "candidate": { "cost": 468, "hostCount": 13, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "evaluations": { "baseline": 1, "strongerBaseline": 5, "candidate": 64, "candidateFeasible": 64 }, "timings": { "baselineSelection": 0.48, "strongerBaselineSelection": 1.722, "candidateSelection": 8.141, "postSelectionVerification": 0.51, "serviceRerun": 7.625, "wholeConfiguration": 36.685 }, "comparison": { "costDifference": 187, "costReductionPercent": 28.55, "eligible": true }, "strongerComparison": { "costDifference": 19, "costReductionPercent": 3.9, "eligible": true }, "outcome": "improved" }, "failures": [] }, { "id": "scale-pressure:safe:cpu140:budget128", "settings": { "scenario": "scale-pressure", "mode": "safe", "cpuDemandPercent": 140, "budget": 128 }, "workloadCount": 64, "reserveFraction": 0.8, "status": "completed", "result": { "baseline": { "cost": 655, "hostCount": 43, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "strongerBaseline": { "cost": 487, "hostCount": 14, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "candidate": { "cost": 462, "hostCount": 13, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "evaluations": { "baseline": 1, "strongerBaseline": 5, "candidate": 128, "candidateFeasible": 128 }, "timings": { "baselineSelection": 0.56, "strongerBaselineSelection": 1.63, "candidateSelection": 13.689, "postSelectionVerification": 0.485, "serviceRerun": 11.065, "wholeConfiguration": 45.705 }, "comparison": { "costDifference": 193, "costReductionPercent": 29.47, "eligible": true }, "strongerComparison": { "costDifference": 25, "costReductionPercent": 5.13, "eligible": true }, "outcome": "improved" }, "failures": [] }, { "id": "scale-pressure:safe:cpu140:budget256", "settings": { "scenario": "scale-pressure", "mode": "safe", "cpuDemandPercent": 140, "budget": 256 }, "workloadCount": 64, "reserveFraction": 0.8, "status": "completed", "result": { "baseline": { "cost": 655, "hostCount": 43, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "strongerBaseline": { "cost": 487, "hostCount": 14, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "candidate": { "cost": 462, "hostCount": 13, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "evaluations": { "baseline": 1, "strongerBaseline": 5, "candidate": 256, "candidateFeasible": 256 }, "timings": { "baselineSelection": 0.476, "strongerBaselineSelection": 1.571, "candidateSelection": 22.034, "postSelectionVerification": 0.536, "serviceRerun": 18.583, "wholeConfiguration": 61.575 }, "comparison": { "costDifference": 193, "costReductionPercent": 29.47, "eligible": true }, "strongerComparison": { "costDifference": 25, "costReductionPercent": 5.13, "eligible": true }, "outcome": "improved" }, "failures": [] }, { "id": "scale-pressure:safe:cpu140:budget512", "settings": { "scenario": "scale-pressure", "mode": "safe", "cpuDemandPercent": 140, "budget": 512 }, "workloadCount": 64, "reserveFraction": 0.8, "status": "completed", "result": { "baseline": { "cost": 655, "hostCount": 43, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "strongerBaseline": { "cost": 487, "hostCount": 14, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "candidate": { "cost": 460, "hostCount": 13, "checks": { "assignment": true, "capacity": true, "headroom": true } }, "evaluations": { "baseline": 1, "strongerBaseline": 5, "candidate": 512, "candidateFeasible": 512 }, "timings": { "baselineSelection": 0.444, "strongerBaselineSelection": 1.587, "candidateSelection": 38.283, "postSelectionVerification": 0.496, "serviceRerun": 13.424, "wholeConfiguration": 71.372 }, "comparison": { "costDifference": 195, "costReductionPercent": 29.77, "eligible": true }, "strongerComparison": { "costDifference": 27, "costReductionPercent": 5.54, "eligible": true }, "outcome": "improved" }, "failures": [] } ], "summary": { "declaredCases": 72, "completedCases": 72, "failedCases": 0, "failedConstraintCases": 0, "improvedVsBasic": 72, "tiedVsBasic": 0, "noGoVsBasic": 0, "improvedVsStronger": 69, "tiedVsStronger": 3, "noGoVsStronger": 0 }, "limits": "Synthetic web showcase only: not the full Istimthal engine, real provider prices, customer savings, global optimality or competitor performance. The five-rule comparison is a fixed heuristic portfolio from the same demonstration; it is not an external solver. Cases share synthetic scenario families and are not 72 independent customer problems. Each offline configuration has a parent-enforced 5,000 ms execution ceiling, including worker startup, both references, search, independent rechecks and service rerun. An overdue worker is terminated, its failure retained and remaining configurations skipped; such a report does not pass. Method timings are observed local elapsed time, include internal search checks, exclude startup and network, and are not a Cloudflare latency guarantee. Public evidence contains aggregate outcomes only; no workloads, host catalog, plans, mappings, generator seed, source code or access credentials. Invitation reruns remain subject to the existing server quota." }