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Pillow-SIMD timings are compared only where its outputs also match regular Pillow.", "notes": [ "This x86-only cohort compares pillow-rs CPU/SIMD, ordinary Pillow 12.1.1, and Pillow-SIMD 12.1.1.post0 on identical workloads and measurement policies.", "Pillow-SIMD and Pillow were run in separate virtual environments because both install the PIL namespace. pillow-rs CPU/SIMD parity uses regular Pillow; Pillow-SIMD compatibility is checked separately and incompatible baseline cells remain visible with their speed ratios withheld.", "The matched cohort covers 37 full-size, parity-backed workflow IDs: 32 pipeline-op workloads, the established RGB GaussianBlur case, and getchannel in L, LA, RGB, and RGBA. Each measured source uses the same input and measurement policy per workflow; target profiles appear only when declared by that workload.", "This cohort uses the Pillow-SIMD default SSE4 build. It is not comparable with the Apple ARM measurements on the main benchmark page.", "Pillow-SIMD output differed from regular Pillow on 3 workload(s); those baseline cells are retained and no Pillow-SIMD speed ratio is accepted: pipeline-op.filter.material-l-noise-5x5-1024x768, pipeline-op.filter.material-la-nonmatching-5x5-1024x768, pipeline-op.grayscale.material-rgb-noise-1024x768." ], "rows": [ { "workload": "pipeline-op.boxblur.material-l-noise-1024x768-radius-1", "subject": "pillow", "comparison_group": "default", "status": "completed", "median_us": 4443.401, "p90_us": null, "p95_us": 4482.86, "sample_count": 100, "sample_unit": "timed workflow execution", "policy": { "boundary": "observed_steps", "step_ids": [ "apply-filter", "observe-filter-result" ], "metrics": [ "latency", "throughput" ], "warmup_iterations": 5, "measurement_iterations": 20, "samples": 5, "concurrency": 1, "cache_state": "warm", "correctness_gate": "parity_pass" }, "context": { "size": [ 1024, 768 ], "mode": 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