{ "schema_version": 1, "title": "Telebugs Rails 1.23.3 vs Rust 2.0.1 benchmark results", "contents": "All five measured rounds for the two releases compared in the article. Values retain source precision. These are per-trial statistics, not per-request samples or fixture payloads.", "versions": { "rails": { "telebugs": "1.23.3", "framework": "Rails 8.1.3.1", "ruby": "4.0.6" }, "rust": { "telebugs": "2.0.1", "rust_compiler": "1.92.0", "build_profile": "release" } }, "environment": { "platform": "Native AMD64 Linux containers in an OrbStack VM on a shared Intel i7-9750H laptop", "resource_limits_and_counts": { "app_cpus": 2, "app_memory_bytes": 2147483648, "swap": false, "client_cpus": 2, "client_memory_bytes": 536870912, "rounds": 5, "seed_reports": 2000, "seed_groups": 100, "ingest_warmup": 100, "page_requests_per_route": 100, "ingest_count": 1000, "ingest_concurrency": 4 }, "default_background_worker_processes_per_application": 6, "sqlite_policy": { "databases": [ "primary", "queue", "cache" ], "journal_mode": "WAL", "synchronous": "NORMAL" }, "external_notifications_configured": false, "network": "Loopback within the local Linux environment; persistent HTTP connections and identity encoding.", "client_isolation": "Load client and read-only SQLite observer run outside the application CPU accounting group with separate resource limits." }, "fixture_and_execution": { "seed_projects": 1, "reset": "Each trial starts from an identical cold copy of the stopped seed databases.", "warmup": "100 ingestion events before measured work; page routes and connections are warmed before timed page requests. Warmups are excluded from reported request and report counts.", "pages": "Each trial measures 100 authenticated full HTML requests per route at concurrency 1, then another 100 per route at concurrency 4: 600 requests per mode.", "ingestion": "Each trial sends one fixed burst of 1,000 events over four connections, within the existing 3,000-events-per-minute admission policy.", "execution_order": "Version order varied across rounds. Within each application trial, serial pages, concurrent pages, and ingestion were measured as separate phases.", "measured_page_requests_per_version": 6000, "measured_reports_per_version": 5000, "validation": "Expected event IDs and report counts were accounted for, no pending payloads or unfinished/failed jobs remained, and stopped databases passed integrity checks." }, "metric_definitions": { "p50_ms": "Per-route nearest-rank 50th percentile of full-response latency, in milliseconds, within one trial.", "p95_ms": "Per-route nearest-rank 95th percentile of full-response latency, in milliseconds, within one trial.", "mean_ms": "Per-route arithmetic mean full-response latency in milliseconds within one trial.", "mean_body_bytes": "Mean response body size in bytes; the released versions return different HTML.", "batch_elapsed_seconds": "Elapsed seconds to finish all 600 authenticated page requests in that concurrency mode.", "cpu_seconds_per_1000_requests": "Whole application cgroup CPU time, including background workers, normalized to 1,000 page requests.", "elapsed_seconds": "Seconds from the first ingestion send until all 1,000 reports are stored and the queue is drained.", "stored_reports_per_second": "1,000 divided by elapsed_seconds; completed fixed-burst throughput.", "cpu_seconds_per_1000_reports": "Whole application cgroup CPU time during the 1,000-report ingestion burst through completion.", "acceptance_seconds": "Seconds to receive HTTP acknowledgments for the entire ingestion burst; not individual-request latency.", "drain_seconds": "Additional seconds after the final HTTP acknowledgment until the complete ingestion burst finishes." }, "aggregation": { "per_version_medians": "Median of five per-trial values for each metric. Latency percentiles are computed within each trial first; requests are not pooled across trials.", "ratios": "Headline ratios compare the two version medians, rather than averaging per-round speedups.", "cpu_accounting": "Cumulative application CPU is bracketed after client preparation through completed work. Idle background CPU is included, not subtracted." }, "limitations": [ "One shared laptop, one synthetic dataset, and AMD64 only; not a dedicated VPS or ARM64 performance measurement.", "Page timings exclude sign-in, assets, browser rendering, and TLS.", "Fixed-burst ingestion results are not a sustained rate ceiling or a promise of capacity for every installation.", "The complete application versions differ in runtime, queries, rendered HTML, and configuration. These results do not isolate the language alone.", "Every measured round for these two releases is retained, including the slower Rust ingestion round and slower median HTTP acknowledgment time." ], "page_labels": { "projects": "Projects", "project_overview": "Project overview", "errors": "All errors", "reports": "All reports", "error_reports": "Occurrences of one error", "report_detail": "Report detail" }, "summary": { "headline_comparison": { "page_throughput_ratio_concurrency_4": 5.965477966162385, "page_cpu_reduction_percent_concurrency_4": 68.66757691244656, "completed_ingestion_throughput_ratio": 1.693760734398537, "ingestion_cpu_reduction_percent": 33.12601918471528, "rounds_with_faster_rust_ingestion": 4 }, "per_version_medians": { "rails": { "pages": { "concurrency_1": { "batch_elapsed_seconds": 34.03616794000118, "cpu_seconds_per_1000_requests": 58.477891666666665, "routes": { "projects": { "p50_ms": 15.232737998303492, "p95_ms": 21.445446996949613, "mean_ms": 16.476696450190502, "mean_body_bytes": 69568.0 }, "project_overview": { "p50_ms": 78.20848299888894, "p95_ms": 164.31458300212398, "mean_ms": 87.66178792029677, "mean_body_bytes": 297033.0 }, "errors": { "p50_ms": 104.6465619947412, "p95_ms": 134.87463600176852, "mean_ms": 108.24446277023526, "mean_body_bytes": 501666.0 }, "reports": { "p50_ms": 34.0785579974181, "p95_ms": 40.45146800490329, "mean_ms": 34.71684780997748, "mean_body_bytes": 283356.0 }, "error_reports": { "p50_ms": 49.38100399886025, "p95_ms": 56.53172600432299, "mean_ms": 50.797950189880794, "mean_body_bytes": 236705.0 }, "report_detail": { "p50_ms": 39.975929001229815, "p95_ms": 48.795999995491, "mean_ms": 42.0296515897644, "mean_body_bytes": 169081.0 } } }, "concurrency_4": { "batch_elapsed_seconds": 34.29179744800058, "cpu_seconds_per_1000_requests": 61.12756833333333, "routes": { "projects": { "p50_ms": 120.49136899440782, "p95_ms": 252.13290200190386, "mean_ms": 128.66294551968167, "mean_body_bytes": 69568.0 }, "project_overview": { "p50_ms": 231.42843400273705, "p95_ms": 475.2675359995919, "mean_ms": 250.26804798966623, "mean_body_bytes": 297033.0 }, "errors": { "p50_ms": 320.08890599536244, "p95_ms": 522.902017000888, "mean_ms": 333.11647365015233, "mean_body_bytes": 501666.0 }, "reports": { "p50_ms": 138.3802080017631, "p95_ms": 289.7053819979192, "mean_ms": 155.0517424701684, "mean_body_bytes": 283356.0 }, "error_reports": { "p50_ms": 185.02828299824614, "p95_ms": 369.7043089996441, "mean_ms": 198.39143673983926, "mean_body_bytes": 236705.0 }, "report_detail": { "p50_ms": 260.47470699995756, "p95_ms": 499.47615699784365, "mean_ms": 281.07243552978616, "mean_body_bytes": 169081.0 } } } }, "ingestion": { "elapsed_seconds": 22.613019441007054, "stored_reports_per_second": 44.22231195656133, "cpu_seconds_per_1000_reports": 30.445904, "acceptance_seconds": 10.293296102005115, "drain_seconds": 12.31972333900194 } }, "rust": { "pages": { "concurrency_1": { "batch_elapsed_seconds": 8.946124733003671, "cpu_seconds_per_1000_requests": 15.076516666666667, "routes": { "projects": { "p50_ms": 6.402254999557044, "p95_ms": 7.145251998736057, "mean_ms": 6.435537259603734, "mean_body_bytes": 58457.0 }, "project_overview": { "p50_ms": 22.886328006279655, "p95_ms": 25.180589997034986, "mean_ms": 22.98839629002032, "mean_body_bytes": 299094.0 }, "errors": { "p50_ms": 18.044535994704347, "p95_ms": 19.745782999962103, "mean_ms": 17.913563800029806, "mean_body_bytes": 299677.0 }, "reports": { "p50_ms": 14.47772400570102, "p95_ms": 15.576377998513635, "mean_ms": 14.332013660095981, "mean_body_bytes": 162684.0 }, "error_reports": { "p50_ms": 16.329687998222653, "p95_ms": 17.98419200349599, "mean_ms": 16.257418360255542, "mean_body_bytes": 244657.0 }, "report_detail": { "p50_ms": 11.058477000915445, "p95_ms": 12.009419995592907, "mean_ms": 11.051840430445736, "mean_body_bytes": 169798.0 } } }, "concurrency_4": { "batch_elapsed_seconds": 5.748373834001541, 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"cpu_seconds_per_1000_reports": 20.360388, "acceptance_seconds": 12.293679807000444, "drain_seconds": 0.8527628400042886 } } } }, "trials": [ { "round": 1, "results": { "rails": { "pages": { "concurrency_1": { "batch_elapsed_seconds": 36.510085785004776, "cpu_seconds_per_1000_requests": 62.951035, "routes": { "projects": { "p50_ms": 15.232737998303492, "p95_ms": 24.471920005453285, "mean_ms": 17.09089230003883, "mean_body_bytes": 69568.0 }, "project_overview": { "p50_ms": 76.73696699930588, "p95_ms": 179.68292700243182, "mean_ms": 92.33402332996775, "mean_body_bytes": 296973.0 }, "errors": { "p50_ms": 100.60230000090087, "p95_ms": 187.2556899979827, "mean_ms": 117.35947344001033, "mean_body_bytes": 501516.0 }, "reports": { "p50_ms": 33.19649399782065, "p95_ms": 55.27033500402467, "mean_ms": 36.60851291992003, "mean_body_bytes": 283256.0 }, "error_reports": { "p50_ms": 49.200192996067926, "p95_ms": 84.57688899943605, "mean_ms": 55.0193847099581, "mean_body_bytes": 236661.0 }, 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