Pillow-SIMD x86 operation comparison¶

Recorded 2026-10-21 on Ubuntu 24.04 · x86_64 (CPU: AMD EPYC 7763 64-Core Processor; Python: 3.12.10; Rust: 1.96.1; image: ubuntu24-20261012.334.1). This page compares only workloads run in that one benchmark run: Pillow 12.1.1, Pillow-SIMD 12.1.1.post0, and the pillow-rs CPU/SIMD profiles.

Pillow-SIMD installs the PIL namespace, so the two Pillow variants are run in isolated environments. The benchmark admits timings only after each source has independently passed the same exact-output parity cases against pillow-rs. These results are separate from the Apple ARM results on the main benchmark page.

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.

Compare each profile with its workload-matched baseline on the same runner. Parallel CPU is measured separately with the opt-in Rayon feature. Pillow-SIMD appears only for its matched x86 workload cohort. Lower time is better.

At a glance

Average speedup is the geometric mean of matched per-case ratios; typical case is the median. Each parity-checked case counts once. Runner and operation types stay separate.

Ubuntu 24.04 · x86_64

pillow-rs · CPU vs Pillow

Individual operations32 matched cases

Faster in 30 of 32 matched cases.

Average speedup: 3× faster

Typical case: 3.7× faster

30 faster0 tied2 slower

Slowest caseGrayscale material ycbcr noise 1024x768 · YCbCr · 1024 × 768 · 1 operation · observed_stepspillow-rs · CPU took 672 µs vs Pillow 143 µs · 4.7× slower
Fastest caseThumbnail material rgb 1024x768 · RGB · 1024 × 768 · 1 operation · whole workflowpillow-rs · CPU took 279 µs vs Pillow 2.2 ms · 7.88× faster

Complete pipelines5 matched cases

Faster in 4 of 5 matched cases.

Average speedup: 1.55× faster

Typical case: 1.17× faster

4 faster0 tied1 slower

Slowest casePil image image getchannel materialized rgb 1024x768 · RGB · 1024 × 768 · 1 operation · observed_stepspillow-rs · CPU took 380 µs vs Pillow 280 µs · 1.36× slower
Fastest casePil image image getchannel materialized l 1024x768 · L · 1024 × 768 · 1 operation · observed_stepspillow-rs · CPU took 39.4 µs vs Pillow 121 µs · 3.08× faster

Explore every matched workload on the ratio plot

Per-workload differences

Each point is one exact-output-verified workload. Pillow median time divided by pillow-rs median time means 1× is equal latency, above 1× is faster, and below 1× is slower. The plot is grouped by runner, profile, baseline, and workload type, with slowest cases first. Hover a point for both measured medians.

Timing-only results remain in the tables but are excluded from this parity-verified plot and summary.

Use the individual workload tables to compare absolute latency, mode, and measurement boundaries.

Pipeline benchmarks

Composed, matrix, lifecycle and quick workloads. Current snapshot: 5 pipelines.

Baseline Median · vs Pillow Median · vs Pillow Median · vs Pillow Median · vs Pillow Median · vs Pillow Lowest medianAmong comparable implementations

Pil imagefilter gaussianblur standard1024 × 768 · 2 operations · observed_steps Ubuntu 24.04 · x86_64 Operations RGB 30.4 msBaselinePillow. Baseline. 10.1 ms3.03× fasterpillow-rs · CPU. Output comparison passed. 10.8 ms2.8× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 9.58 ms3.17× fasterPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. Pillow-SIMD · SSE4Output comparison passed; Pillow-SIMD output matched regular Pillow

Pil imagefilter gaussianblur standard · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	30.4 ms	Not measured	32.2 ms	100	completed; parity_pass: pass
pillow-rs · CPU	10.1 ms	Not measured	10.4 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	10.8 ms	Not measured	10.9 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	9.58 ms	Not measured	9.63 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pil-imagefilter.gaussianblur.standard

Pil image image getchannel materialized l 1024x7681024 × 768 · 1 operation · observed_steps Ubuntu 24.04 · x86_64 Operations L 121 µsBaselinePillow. Baseline. 39.4 µs3.08× fasterpillow-rs · CPU. Output comparison passed. 88.6 µs1.37× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 109 µs1.11× fasterPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · CPUOutput comparison passed; Pillow-SIMD output matched regular Pillow

Pil image image getchannel materialized l 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	121 µs	Not measured	139 µs	100	completed; parity_pass: pass
pillow-rs · CPU	39.4 µs	Not measured	57.8 µs	100	completed; parity_pass: pass
pillow-rs · SIMD	88.6 µs	Not measured	106 µs	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	109 µs	Not measured	127 µs	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pil-image-image.getchannel.materialized.l-1024x768

Pil image image getchannel materialized rgb 1024x7681024 × 768 · 1 operation · observed_steps Ubuntu 24.04 · x86_64 Operations RGB 280 µsBaselinePillow. Baseline. 380 µs1.36× slowerpillow-rs · CPU. Output comparison passed. 83.8 µs3.34× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 207 µs1.35× fasterPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · SIMDOutput comparison passed; Pillow-SIMD output matched regular Pillow

Pil image image getchannel materialized rgb 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	280 µs	Not measured	304 µs	100	completed; parity_pass: pass
pillow-rs · CPU	380 µs	Not measured	408 µs	100	completed; parity_pass: pass
pillow-rs · SIMD	83.8 µs	Not measured	102 µs	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	207 µs	Not measured	238 µs	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pil-image-image.getchannel.materialized.rgb-1024x768

Pil image image getchannel materialized la 1024x7681024 × 768 · 1 operation · observed_steps Ubuntu 24.04 · x86_64 Operations LA 265 µsBaselinePillow. Baseline. 238 µs1.12× fasterpillow-rs · CPU. Output comparison passed. 85.1 µs3.12× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 202 µs1.31× fasterPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · SIMDOutput comparison passed; Pillow-SIMD output matched regular Pillow

Pil image image getchannel materialized la 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	265 µs	Not measured	296 µs	100	completed; parity_pass: pass
pillow-rs · CPU	238 µs	Not measured	259 µs	100	completed; parity_pass: pass
pillow-rs · SIMD	85.1 µs	Not measured	100 µs	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	202 µs	Not measured	234 µs	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pil-image-image.getchannel.materialized.la-1024x768

Pil image image getchannel materialized rgba 1024x7681024 × 768 · 1 operation · observed_steps Ubuntu 24.04 · x86_64 Operations RGBA 280 µsBaselinePillow. Baseline. 241 µs1.17× fasterpillow-rs · CPU. Output comparison passed. 109 µs2.56× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 218 µs1.29× fasterPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · SIMDOutput comparison passed; Pillow-SIMD output matched regular Pillow

Pil image image getchannel materialized rgba 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	280 µs	Not measured	302 µs	100	completed; parity_pass: pass
pillow-rs · CPU	241 µs	Not measured	265 µs	100	completed; parity_pass: pass
pillow-rs · SIMD	109 µs	Not measured	129 µs	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	218 µs	Not measured	343 µs	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pil-image-image.getchannel.materialized.rgba-1024x768

Individual operation benchmarks

Single-operation workloads; each row retains its declared timing boundary. Current snapshot: 32 operation workloads.

Baseline Median · vs Pillow Median · vs Pillow Median · vs Pillow Median · vs Pillow Median · vs Pillow Lowest medianAmong comparable implementations

Boxblur material l noise 1024x768 radius 11024 × 768 · 2 operations · observed_steps Ubuntu 24.04 · x86_64 neighborhood L 4.44 msBaselinePillow. Baseline. 1.22 ms3.64× fasterpillow-rs · CPU. Output comparison passed. 931 µs4.77× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 4.45 ms0.236% more timePillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · SIMDOutput comparison passed; Pillow-SIMD output matched regular Pillow

Boxblur material l noise 1024x768 radius 1 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	4.44 ms	Not measured	4.48 ms	100	completed; parity_pass: pass
pillow-rs · CPU	1.22 ms	Not measured	1.24 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	931 µs	Not measured	945 µs	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	4.45 ms	Not measured	4.52 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.boxblur.material-l-noise-1024x768-radius-1

Boxblur material rgb noise 1024x768 radius 11024 × 768 · 2 operations · observed_steps Ubuntu 24.04 · x86_64 neighborhood RGB 13.3 msBaselinePillow. Baseline. 3.13 ms4.25× fasterpillow-rs · CPU. Output comparison passed. 2.17 ms6.13× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 5.87 ms2.26× fasterPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · SIMDOutput comparison passed; Pillow-SIMD output matched regular Pillow

Boxblur material rgb noise 1024x768 radius 1 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	13.3 ms	Not measured	13.4 ms	100	completed; parity_pass: pass
pillow-rs · CPU	3.13 ms	Not measured	3.29 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	2.17 ms	Not measured	2.2 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	5.87 ms	Not measured	5.93 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.boxblur.material-rgb-noise-1024x768-radius-1

Gaussianblur material l noise 1024x7681024 × 768 · 2 operations · observed_steps Ubuntu 24.04 · x86_64 point L 9.56 msBaselinePillow. Baseline. 3.43 ms2.79× fasterpillow-rs · CPU. Output comparison passed. 4.32 ms2.21× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 9.58 ms0.164% more timePillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · CPUOutput comparison passed; Pillow-SIMD output matched regular Pillow

Gaussianblur material l noise 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	9.56 ms	Not measured	9.64 ms	100	completed; parity_pass: pass
pillow-rs · CPU	3.43 ms	Not measured	3.46 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	4.32 ms	Not measured	4.58 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	9.58 ms	Not measured	9.71 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.gaussianblur.material-l-noise-1024x768

Gaussianblur material la noise 1024x7681024 × 768 · 2 operations · observed_steps Ubuntu 24.04 · x86_64 point LA 31.9 msBaselinePillow. Baseline. 6.91 ms4.62× fasterpillow-rs · CPU. Output comparison passed. 7.38 ms4.32× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 8.76 ms3.64× fasterPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · CPUOutput comparison passed; Pillow-SIMD output matched regular Pillow

Gaussianblur material la noise 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	31.9 ms	Not measured	32 ms	100	completed; parity_pass: pass
pillow-rs · CPU	6.91 ms	Not measured	6.96 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	7.38 ms	Not measured	7.7 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	8.76 ms	Not measured	8.81 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.gaussianblur.material-la-noise-1024x768

Unsharpmask material rgb noise 1024x768 radius 21024 × 768 · 2 operations · observed_steps Ubuntu 24.04 · x86_64 neighborhood RGB 42.6 msBaselinePillow. Baseline. 11.4 ms3.75× fasterpillow-rs · CPU. Output comparison passed. 10.8 ms3.96× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 21.6 ms1.97× fasterPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · SIMDOutput comparison passed; Pillow-SIMD output matched regular Pillow

Unsharpmask material rgb noise 1024x768 radius 2 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	42.6 ms	Not measured	44.3 ms	100	completed; parity_pass: pass
pillow-rs · CPU	11.4 ms	Not measured	11.7 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	10.8 ms	Not measured	11.4 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	21.6 ms	Not measured	21.7 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.unsharpmask.material-rgb-noise-1024x768-radius-2

Convert mode cmyk to rgb 1024x7681024 × 768 · 1 operation · observed_steps Ubuntu 24.04 · x86_64 point CMYK 5.39 msBaselinePillow. Baseline. 2.1 ms2.57× fasterpillow-rs · CPU. Output comparison passed. 2.23 ms2.42× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 3.66 ms1.47× fasterPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · CPUOutput comparison passed; Pillow-SIMD output matched regular Pillow

Convert mode cmyk to rgb 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	5.39 ms	Not measured	5.57 ms	100	completed; parity_pass: pass
pillow-rs · CPU	2.1 ms	Not measured	2.13 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	2.23 ms	Not measured	2.4 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	3.66 ms	Not measured	3.93 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.convert-mode-cmyk-to-rgb-1024x768

Thumbnail material rgb 1024x7681024 × 768 · 1 operation · whole workflow Ubuntu 24.04 · x86_64 point RGB 2.2 msBaselinePillow. Baseline. 279 µs7.88× fasterpillow-rs · CPU. Output comparison passed. 456 µs4.83× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 590 µs3.73× fasterPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · CPUOutput comparison passed; Pillow-SIMD output matched regular Pillow

Thumbnail material rgb 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: whole_workflow. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	2.2 ms	Not measured	2.3 ms	100	completed; parity_pass: pass
pillow-rs · CPU	279 µs	Not measured	299 µs	100	completed; parity_pass: pass
pillow-rs · SIMD	456 µs	Not measured	477 µs	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	590 µs	Not measured	640 µs	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.thumbnail.material-rgb-1024x768

Merge material rgb l 1024x7681024 × 768 · 1 operation · observed_steps Ubuntu 24.04 · x86_64 point RGB 2.68 msBaselinePillow. Baseline. 2.17 ms1.24× fasterpillow-rs · CPU. Output comparison passed. 1.69 ms1.59× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 2.7 ms1.01× slowerPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · SIMDOutput comparison passed; Pillow-SIMD output matched regular Pillow

Merge material rgb l 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	2.68 ms	Not measured	2.71 ms	100	completed; parity_pass: pass
pillow-rs · CPU	2.17 ms	Not measured	2.2 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	1.69 ms	Not measured	1.73 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	2.7 ms	Not measured	2.92 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.merge.material-rgb-l-1024x768

Posterize material l noise 1024x7681024 × 768 · 1 operation · observed_steps Ubuntu 24.04 · x86_64 point L 568 µsBaselinePillow. Baseline. 87.3 µs6.51× fasterpillow-rs · CPU. Output comparison passed. 95 µs5.98× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 535 µs1.06× fasterPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · CPUOutput comparison passed; Pillow-SIMD output matched regular Pillow

Posterize material l noise 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	568 µs	Not measured	577 µs	100	completed; parity_pass: pass
pillow-rs · CPU	87.3 µs	Not measured	103 µs	100	completed; parity_pass: pass
pillow-rs · SIMD	95 µs	Not measured	101 µs	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	535 µs	Not measured	577 µs	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.posterize.material-l-noise-1024x768

Posterize material rgb noise 1024x7681024 × 768 · 1 operation · observed_steps Ubuntu 24.04 · x86_64 point RGB 2.79 msBaselinePillow. Baseline. 1.75 ms1.59× fasterpillow-rs · CPU. Output comparison passed. 1.19 ms2.35× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 2.81 ms1.01× slowerPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · SIMDOutput comparison passed; Pillow-SIMD output matched regular Pillow

Posterize material rgb noise 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	2.79 ms	Not measured	2.82 ms	100	completed; parity_pass: pass
pillow-rs · CPU	1.75 ms	Not measured	1.78 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	1.19 ms	Not measured	1.22 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	2.81 ms	Not measured	3.03 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.posterize.material-rgb-noise-1024x768

Medianfilter material l noise 1024x7681024 × 768 · 2 operations · observed_steps Ubuntu 24.04 · x86_64 neighborhood L 66.4 msBaselinePillow. Baseline. 12.4 ms5.38× fasterpillow-rs · CPU. Output comparison passed. 13.5 ms4.92× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 68 ms1.02× slowerPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · CPUOutput comparison passed; Pillow-SIMD output matched regular Pillow

Medianfilter material l noise 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	66.4 ms	Not measured	67 ms	100	completed; parity_pass: pass
pillow-rs · CPU	12.4 ms	Not measured	12.9 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	13.5 ms	Not measured	13.9 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	68 ms	Not measured	68.9 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.medianfilter.material-l-noise-1024x768

Medianfilter material la noise 1024x7681024 × 768 · 2 operations · observed_steps Ubuntu 24.04 · x86_64 neighborhood LA 132 msBaselinePillow. Baseline. 21.6 ms6.11× fasterpillow-rs · CPU. Output comparison passed. 26.8 ms4.92× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 136 ms1.03× slowerPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · CPUOutput comparison passed; Pillow-SIMD output matched regular Pillow

Medianfilter material la noise 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	132 ms	Not measured	135 ms	100	completed; parity_pass: pass
pillow-rs · CPU	21.6 ms	Not measured	22.9 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	26.8 ms	Not measured	27.9 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	136 ms	Not measured	139 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.medianfilter.material-la-noise-1024x768

Medianfilter material rgb noise 1024x7681024 × 768 · 2 operations · observed_steps Ubuntu 24.04 · x86_64 neighborhood RGB 193 msBaselinePillow. Baseline. 31.1 ms6.23× fasterpillow-rs · CPU. Output comparison passed. 43.8 ms4.42× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 205 ms1.06× slowerPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · CPUOutput comparison passed; Pillow-SIMD output matched regular Pillow

Medianfilter material rgb noise 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	193 ms	Not measured	201 ms	100	completed; parity_pass: pass
pillow-rs · CPU	31.1 ms	Not measured	32.9 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	43.8 ms	Not measured	45.3 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	205 ms	Not measured	209 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.medianfilter.material-rgb-noise-1024x768

Maxfilter material rgb noise 1024x7681024 × 768 · 2 operations · observed_steps Ubuntu 24.04 · x86_64 neighborhood RGB 137 msBaselinePillow. Baseline. 24.1 ms5.68× fasterpillow-rs · CPU. Output comparison passed. 20.6 ms6.63× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 151 ms1.1× slowerPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · SIMDOutput comparison passed; Pillow-SIMD output matched regular Pillow

Maxfilter material rgb noise 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	137 ms	Not measured	144 ms	100	completed; parity_pass: pass
pillow-rs · CPU	24.1 ms	Not measured	25.3 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	20.6 ms	Not measured	21.4 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	151 ms	Not measured	153 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.maxfilter.material-rgb-noise-1024x768

Minfilter material rgb noise 1024x7681024 × 768 · 2 operations · observed_steps Ubuntu 24.04 · x86_64 neighborhood RGB 137 msBaselinePillow. Baseline. 24.1 ms5.67× fasterpillow-rs · CPU. Output comparison passed. 20.9 ms6.53× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 146 ms1.07× slowerPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · SIMDOutput comparison passed; Pillow-SIMD output matched regular Pillow

Minfilter material rgb noise 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	137 ms	Not measured	143 ms	100	completed; parity_pass: pass
pillow-rs · CPU	24.1 ms	Not measured	25.2 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	20.9 ms	Not measured	21.7 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	146 ms	Not measured	151 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.minfilter.material-rgb-noise-1024x768

Maxfilter material l noise 1024x7681024 × 768 · 2 operations · observed_steps Ubuntu 24.04 · x86_64 neighborhood L 45.7 msBaselinePillow. Baseline. 18 ms2.54× fasterpillow-rs · CPU. Output comparison passed. 7.15 ms6.39× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 47.5 ms1.04× slowerPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · SIMDOutput comparison passed; Pillow-SIMD output matched regular Pillow

Maxfilter material l noise 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	45.7 ms	Not measured	48.1 ms	100	completed; parity_pass: pass
pillow-rs · CPU	18 ms	Not measured	19.2 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	7.15 ms	Not measured	7.2 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	47.5 ms	Not measured	50.1 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.maxfilter.material-l-noise-1024x768

Maxfilter material la noise 1024x7681024 × 768 · 2 operations · observed_steps Ubuntu 24.04 · x86_64 neighborhood LA 91.9 msBaselinePillow. Baseline. 21.2 ms4.33× fasterpillow-rs · CPU. Output comparison passed. 13.7 ms6.7× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 98.2 ms1.07× slowerPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · SIMDOutput comparison passed; Pillow-SIMD output matched regular Pillow

Maxfilter material la noise 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	91.9 ms	Not measured	97.3 ms	100	completed; parity_pass: pass
pillow-rs · CPU	21.2 ms	Not measured	21.7 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	13.7 ms	Not measured	14.3 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	98.2 ms	Not measured	102 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.maxfilter.material-la-noise-1024x768

Minfilter material l noise 1024x7681024 × 768 · 2 operations · observed_steps Ubuntu 24.04 · x86_64 neighborhood L 45 msBaselinePillow. Baseline. 16.3 ms2.76× fasterpillow-rs · CPU. Output comparison passed. 7 ms6.43× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 49.4 ms1.1× slowerPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · SIMDOutput comparison passed; Pillow-SIMD output matched regular Pillow

Minfilter material l noise 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	45 ms	Not measured	47.5 ms	100	completed; parity_pass: pass
pillow-rs · CPU	16.3 ms	Not measured	17.3 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	7 ms	Not measured	7.23 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	49.4 ms	Not measured	50.1 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.minfilter.material-l-noise-1024x768

Minfilter material la noise 1024x7681024 × 768 · 2 operations · observed_steps Ubuntu 24.04 · x86_64 neighborhood LA 93.5 msBaselinePillow. Baseline. 21.1 ms4.42× fasterpillow-rs · CPU. Output comparison passed. 13.9 ms6.73× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 99.7 ms1.07× slowerPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · SIMDOutput comparison passed; Pillow-SIMD output matched regular Pillow

Minfilter material la noise 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	93.5 ms	Not measured	96.2 ms	100	completed; parity_pass: pass
pillow-rs · CPU	21.1 ms	Not measured	21.4 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	13.9 ms	Not measured	14.4 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	99.7 ms	Not measured	101 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.minfilter.material-la-noise-1024x768

Grayscale material rgb noise 1024x7681024 × 768 · 1 operation · observed_steps Ubuntu 24.04 · x86_64 point RGB 515 µsBaselinePillow. Baseline. 1.26 ms2.45× slowerpillow-rs · CPU. Output comparison passed. 785 µs1.52× slowerpillow-rs · SIMD. Output comparison passed. Not measured Not measured 327 µsNot comparablePillow-SIMD · SSE4. Output differs · speed comparison withheld. pillow-rs · SIMDOutput comparison passed; Output differs · speed comparison withheld

Grayscale material rgb noise 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	515 µs	Not measured	543 µs	100	completed; parity_pass: pass
pillow-rs · CPU	1.26 ms	Not measured	1.36 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	785 µs	Not measured	803 µs	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	327 µs	Not measured	346 µs	100	completed; Pillow-SIMD compatibility: fail

Workload ID: pipeline-op.grayscale.material-rgb-noise-1024x768

Grayscale material ycbcr noise 1024x7681024 × 768 · 1 operation · observed_steps Ubuntu 24.04 · x86_64 point YCbCr 143 µsBaselinePillow. Baseline. 672 µs4.7× slowerpillow-rs · CPU. Output comparison passed. 630 µs4.4× slowerpillow-rs · SIMD. Output comparison passed. Not measured Not measured 145 µs1.02× slowerPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. Pillow-SIMD · SSE4Output comparison passed; Pillow-SIMD output matched regular Pillow

Grayscale material ycbcr noise 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	143 µs	Not measured	164 µs	100	completed; parity_pass: pass
pillow-rs · CPU	672 µs	Not measured	692 µs	100	completed; parity_pass: pass
pillow-rs · SIMD	630 µs	Not measured	648 µs	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	145 µs	Not measured	163 µs	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.grayscale.material-ycbcr-noise-1024x768

Thumbnail native f32 1024x7681024 × 768 · 1 operation · observed_steps Ubuntu 24.04 · x86_64 geometry F 1.87 msBaselinePillow. Baseline. 1.23 ms1.52× fasterpillow-rs · CPU. Output comparison passed. 1.48 ms1.26× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 1.75 ms1.07× fasterPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · CPUOutput comparison passed; Pillow-SIMD output matched regular Pillow

Thumbnail native f32 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	1.87 ms	Not measured	1.89 ms	100	completed; parity_pass: pass
pillow-rs · CPU	1.23 ms	Not measured	1.25 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	1.48 ms	Not measured	1.53 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	1.75 ms	Not measured	1.89 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.thumbnail.native-f32-1024x768

Thumbnail native i32 1024x7681024 × 768 · 1 operation · observed_steps Ubuntu 24.04 · x86_64 geometry I 5.57 msBaselinePillow. Baseline. 2.07 ms2.69× fasterpillow-rs · CPU. Output comparison passed. 1.79 ms3.12× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 5.36 ms1.04× fasterPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · SIMDOutput comparison passed; Pillow-SIMD output matched regular Pillow

Thumbnail native i32 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	5.57 ms	Not measured	5.61 ms	100	completed; parity_pass: pass
pillow-rs · CPU	2.07 ms	Not measured	2.1 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	1.79 ms	Not measured	1.8 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	5.36 ms	Not measured	5.6 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.thumbnail.native-i32-1024x768

Filter material l noise 5x5 1024x7681024 × 768 · 2 operations · observed_steps Ubuntu 24.04 · x86_64 neighborhood L 12.6 msBaselinePillow. Baseline. 1.96 ms6.43× fasterpillow-rs · CPU. Output comparison passed. 1.19 ms10.6× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 4.05 msNot comparablePillow-SIMD · SSE4. Output differs · speed comparison withheld. pillow-rs · SIMDOutput comparison passed; Output differs · speed comparison withheld

Filter material l noise 5x5 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	12.6 ms	Not measured	12.7 ms	100	completed; parity_pass: pass
pillow-rs · CPU	1.96 ms	Not measured	1.98 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	1.19 ms	Not measured	1.29 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	4.05 ms	Not measured	4.4 ms	100	completed; Pillow-SIMD compatibility: fail

Workload ID: pipeline-op.filter.material-l-noise-5x5-1024x768

Filter material l noise flat 5x5 1024x7681024 × 768 · 2 operations · observed_steps Ubuntu 24.04 · x86_64 neighborhood L 11.9 msBaselinePillow. Baseline. 1.55 ms7.64× fasterpillow-rs · CPU. Output comparison passed. 1.25 ms9.5× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 4.05 ms2.93× fasterPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · SIMDOutput comparison passed; Pillow-SIMD output matched regular Pillow

Filter material l noise flat 5x5 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	11.9 ms	Not measured	12.7 ms	100	completed; parity_pass: pass
pillow-rs · CPU	1.55 ms	Not measured	1.58 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	1.25 ms	Not measured	1.27 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	4.05 ms	Not measured	4.38 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.filter.material-l-noise-flat-5x5-1024x768

Filter material la noise 5x5 1024x7681024 × 768 · 2 operations · observed_steps Ubuntu 24.04 · x86_64 neighborhood LA 26 msBaselinePillow. Baseline. 8.33 ms3.12× fasterpillow-rs · CPU. Output comparison passed. 2.02 ms12.9× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 5.39 ms4.82× fasterPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · SIMDOutput comparison passed; Pillow-SIMD output matched regular Pillow

Filter material la noise 5x5 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	26 ms	Not measured	27.5 ms	100	completed; parity_pass: pass
pillow-rs · CPU	8.33 ms	Not measured	8.37 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	2.02 ms	Not measured	2.07 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	5.39 ms	Not measured	5.69 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.filter.material-la-noise-5x5-1024x768

Filter material la nonmatching 5x5 1024x7681024 × 768 · 2 operations · observed_steps Ubuntu 24.04 · x86_64 neighborhood LA 26 msBaselinePillow. Baseline. 6.44 ms4.04× fasterpillow-rs · CPU. Output comparison passed. 3.27 ms7.96× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 5.4 msNot comparablePillow-SIMD · SSE4. Output differs · speed comparison withheld. pillow-rs · SIMDOutput comparison passed; Output differs · speed comparison withheld

Filter material la nonmatching 5x5 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	26 ms	Not measured	27.5 ms	100	completed; parity_pass: pass
pillow-rs · CPU	6.44 ms	Not measured	6.49 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	3.27 ms	Not measured	3.45 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	5.4 ms	Not measured	5.8 ms	100	completed; Pillow-SIMD compatibility: fail

Workload ID: pipeline-op.filter.material-la-nonmatching-5x5-1024x768

Filter material la noise 3x3 1024x7681024 × 768 · 2 operations · observed_steps Ubuntu 24.04 · x86_64 neighborhood LA 11.5 msBaselinePillow. Baseline. 4.72 ms2.43× fasterpillow-rs · CPU. Output comparison passed. 4.77 ms2.41× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 2.9 ms3.95× fasterPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. Pillow-SIMD · SSE4Output comparison passed; Pillow-SIMD output matched regular Pillow

Filter material la noise 3x3 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	11.5 ms	Not measured	12 ms	100	completed; parity_pass: pass
pillow-rs · CPU	4.72 ms	Not measured	4.76 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	4.77 ms	Not measured	4.82 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	2.9 ms	Not measured	3.09 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.filter.material-la-noise-3x3-1024x768

Filter material i noise 5x5 1024x7681024 × 768 · 2 operations · observed_steps Ubuntu 24.04 · x86_64 neighborhood I 14.4 msBaselinePillow. Baseline. 4.52 ms3.2× fasterpillow-rs · CPU. Output comparison passed. 5.66 ms2.55× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 12.8 ms1.13× fasterPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · CPUOutput comparison passed; Pillow-SIMD output matched regular Pillow

Filter material i noise 5x5 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	14.4 ms	Not measured	15.2 ms	100	completed; parity_pass: pass
pillow-rs · CPU	4.52 ms	Not measured	4.59 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	5.66 ms	Not measured	5.84 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	12.8 ms	Not measured	14.3 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.filter.material-i-noise-5x5-1024x768

Filter material i bounded noise 5x5 1024x7681024 × 768 · 2 operations · observed_steps Ubuntu 24.04 · x86_64 neighborhood I 15.1 msBaselinePillow. Baseline. 4.01 ms3.75× fasterpillow-rs · CPU. Output comparison passed. 5.79 ms2.6× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 12.9 ms1.17× fasterPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · CPUOutput comparison passed; Pillow-SIMD output matched regular Pillow

Filter material i bounded noise 5x5 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	15.1 ms	Not measured	15.2 ms	100	completed; parity_pass: pass
pillow-rs · CPU	4.01 ms	Not measured	4.06 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	5.79 ms	Not measured	5.85 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	12.9 ms	Not measured	13.7 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.filter.material-i-bounded-noise-5x5-1024x768

Rotate material rgb nearest noise recovered 20261016 1024x7681024 × 768 · 1 operation · observed_steps Ubuntu 24.04 · x86_64 point RGB 2.94 msBaselinePillow. Baseline. 2.86 ms1.03× fasterpillow-rs · CPU. Output comparison passed. 1.47 ms2× fasterpillow-rs · SIMD. Output comparison passed. Not measured Not measured 2.94 ms0.0325% more timePillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · SIMDOutput comparison passed; Pillow-SIMD output matched regular Pillow

Rotate material rgb nearest noise recovered 20261016 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	2.94 ms	Not measured	2.98 ms	100	completed; parity_pass: pass
pillow-rs · CPU	2.86 ms	Not measured	2.91 ms	100	completed; parity_pass: pass
pillow-rs · SIMD	1.47 ms	Not measured	1.51 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	2.94 ms	Not measured	3.19 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.rotate.material-rgb-nearest-noise-recovered-20261016-1024x768

Rotate material rgba nearest 37deg noise fill 1024x7681024 × 768 · 1 operation · observed_steps Ubuntu 24.04 · x86_64 geometry RGBA 6.38 msBaselinePillow. Baseline. 3.75 ms1.7× fasterpillow-rs · CPU. Output comparison passed. Not measured Not measured Not measured 5.95 ms1.07× fasterPillow-SIMD · SSE4. Pillow-SIMD output matched regular Pillow. pillow-rs · CPUOutput comparison passed; Pillow-SIMD output matched regular Pillow

Rotate material rgba nearest 37deg noise fill 1024x768 · Runner: Ubuntu 24.04 · x86_64. Timing boundary: observed_steps. Sample unit: timed workflow execution. Percentiles show spread, not confidence intervals.

Implementation	Median	P90	P95	Samples	Recorded result
Pillow	6.38 ms	Not measured	6.76 ms	100	completed; parity_pass: pass
pillow-rs · CPU	3.75 ms	Not measured	3.9 ms	100	completed; parity_pass: pass
Pillow-SIMD · SSE4	5.95 ms	Not measured	6.26 ms	100	completed; Pillow-SIMD compatibility: pass

Workload ID: pipeline-op.rotate.material-rgba-nearest-37deg-noise-fill-1024x768

37 recorded workloads: 5 pipeline and 32 individual-operation rows · 2026-10-21 · Ubuntu 24.04 · x86_64

Python API operations and complete pipelines, including their declared setup and output steps. CPU, SIMD and GPU are separate implementations.

Matched source and parity runs¶

Source	Package version	Benchmark run	Parity run
pillow	12.1.1	migration-benchmark-15a619ce4f8547ff84fb69e2fa482c31	migration-parity-benchmark-gate-56d27f0a20624474867fbc4268210f38
pillow-simd	12.1.1.post0	migration-benchmark-231f0c51d0f845048dcc2e801d85d6d7	migration-parity-benchmark-gate-56d27f0a20624474867fbc4268210f38

Workload-level evidence¶

Workload	Mode	Implementation	Median µs	Samples	Output/backend evidence
pipeline-op.boxblur.material-l-noise-1024x768-radius-1	L	pillow	4,443.401	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.boxblur.material-l-noise-1024x768-radius-1	L	python-cpu	1,220.286	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.boxblur.material-l-noise-1024x768-radius-1	L	python-simd	931.054	100	completed; parity_pass: pass; simd → simd
pipeline-op.boxblur.material-rgb-noise-1024x768-radius-1	RGB	pillow	13,285.029	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.boxblur.material-rgb-noise-1024x768-radius-1	RGB	python-cpu	3,125.683	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.boxblur.material-rgb-noise-1024x768-radius-1	RGB	python-simd	2,168.686	100	completed; parity_pass: pass; simd → simd
pipeline-op.gaussianblur.material-l-noise-1024x768	L	pillow	9,560.385	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.gaussianblur.material-l-noise-1024x768	L	python-cpu	3,429.735	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.gaussianblur.material-l-noise-1024x768	L	python-simd	4,319.062	100	completed; parity_pass: pass; simd → simd
pipeline-op.gaussianblur.material-la-noise-1024x768	LA	pillow	31,895.100	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.gaussianblur.material-la-noise-1024x768	LA	python-cpu	6,910.231	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.gaussianblur.material-la-noise-1024x768	LA	python-simd	7,376.618	100	completed; parity_pass: pass; simd → simd
pipeline-op.unsharpmask.material-rgb-noise-1024x768-radius-2	RGB	pillow	42,599.025	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.unsharpmask.material-rgb-noise-1024x768-radius-2	RGB	python-cpu	11,360.725	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.unsharpmask.material-rgb-noise-1024x768-radius-2	RGB	python-simd	10,764.781	100	completed; parity_pass: pass; simd → simd
pipeline-op.convert-mode-cmyk-to-rgb-1024x768	CMYK	pillow	5,386.092	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.convert-mode-cmyk-to-rgb-1024x768	CMYK	python-cpu	2,099.300	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.convert-mode-cmyk-to-rgb-1024x768	CMYK	python-simd	2,229.160	100	completed; parity_pass: pass; simd → simd
pipeline-op.thumbnail.material-rgb-1024x768	RGB	pillow	2,203.553	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.thumbnail.material-rgb-1024x768	RGB	python-cpu	279.483	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.thumbnail.material-rgb-1024x768	RGB	python-simd	456.472	100	completed; parity_pass: pass; simd → simd
pipeline-op.merge.material-rgb-l-1024x768	RGB	pillow	2,682.023	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.merge.material-rgb-l-1024x768	RGB	python-cpu	2,167.757	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.merge.material-rgb-l-1024x768	RGB	python-simd	1,688.213	100	completed; parity_pass: pass; simd → simd
pipeline-op.posterize.material-l-noise-1024x768	L	pillow	568.261	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.posterize.material-l-noise-1024x768	L	python-cpu	87.318	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.posterize.material-l-noise-1024x768	L	python-simd	95.043	100	completed; parity_pass: pass; simd → simd
pipeline-op.posterize.material-rgb-noise-1024x768	RGB	pillow	2,788.367	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.posterize.material-rgb-noise-1024x768	RGB	python-cpu	1,749.996	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.posterize.material-rgb-noise-1024x768	RGB	python-simd	1,185.770	100	completed; parity_pass: pass; simd → simd
pipeline-op.medianfilter.material-l-noise-1024x768	L	pillow	66,407.862	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.medianfilter.material-l-noise-1024x768	L	python-cpu	12,354.336	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.medianfilter.material-l-noise-1024x768	L	python-simd	13,504.724	100	completed; parity_pass: pass; simd → simd
pipeline-op.medianfilter.material-la-noise-1024x768	LA	pillow	132,056.009	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.medianfilter.material-la-noise-1024x768	LA	python-cpu	21,625.999	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.medianfilter.material-la-noise-1024x768	LA	python-simd	26,814.144	100	completed; parity_pass: pass; simd → simd
pipeline-op.medianfilter.material-rgb-noise-1024x768	RGB	pillow	193,491.458	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.medianfilter.material-rgb-noise-1024x768	RGB	python-cpu	31,076.338	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.medianfilter.material-rgb-noise-1024x768	RGB	python-simd	43,809.310	100	completed; parity_pass: pass; simd → simd
pipeline-op.maxfilter.material-rgb-noise-1024x768	RGB	pillow	136,804.921	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.maxfilter.material-rgb-noise-1024x768	RGB	python-cpu	24,087.931	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.maxfilter.material-rgb-noise-1024x768	RGB	python-simd	20,623.565	100	completed; parity_pass: pass; simd → simd
pipeline-op.minfilter.material-rgb-noise-1024x768	RGB	pillow	136,687.663	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.minfilter.material-rgb-noise-1024x768	RGB	python-cpu	24,115.332	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.minfilter.material-rgb-noise-1024x768	RGB	python-simd	20,926.029	100	completed; parity_pass: pass; simd → simd
pipeline-op.maxfilter.material-l-noise-1024x768	L	pillow	45,742.084	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.maxfilter.material-l-noise-1024x768	L	python-cpu	17,996.262	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.maxfilter.material-l-noise-1024x768	L	python-simd	7,152.801	100	completed; parity_pass: pass; simd → simd
pipeline-op.maxfilter.material-la-noise-1024x768	LA	pillow	91,868.298	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.maxfilter.material-la-noise-1024x768	LA	python-cpu	21,225.220	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.maxfilter.material-la-noise-1024x768	LA	python-simd	13,702.446	100	completed; parity_pass: pass; simd → simd
pipeline-op.minfilter.material-l-noise-1024x768	L	pillow	45,007.355	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.minfilter.material-l-noise-1024x768	L	python-cpu	16,314.076	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.minfilter.material-l-noise-1024x768	L	python-simd	7,003.066	100	completed; parity_pass: pass; simd → simd
pipeline-op.minfilter.material-la-noise-1024x768	LA	pillow	93,467.211	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.minfilter.material-la-noise-1024x768	LA	python-cpu	21,133.570	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.minfilter.material-la-noise-1024x768	LA	python-simd	13,889.540	100	completed; parity_pass: pass; simd → simd
pipeline-op.grayscale.material-rgb-noise-1024x768	RGB	pillow	514.942	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.grayscale.material-rgb-noise-1024x768	RGB	python-cpu	1,260.393	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.grayscale.material-rgb-noise-1024x768	RGB	python-simd	785.061	100	completed; parity_pass: pass; simd → simd
pipeline-op.grayscale.material-ycbcr-noise-1024x768	YCbCr	pillow	143.022	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.grayscale.material-ycbcr-noise-1024x768	YCbCr	python-cpu	672.109	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.grayscale.material-ycbcr-noise-1024x768	YCbCr	python-simd	629.791	100	completed; parity_pass: pass; simd → simd
pipeline-op.thumbnail.native-f32-1024x768	F	pillow	1,868.807	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.thumbnail.native-f32-1024x768	F	python-cpu	1,229.216	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.thumbnail.native-f32-1024x768	F	python-simd	1,484.653	100	completed; parity_pass: pass; simd → simd
pipeline-op.thumbnail.native-i32-1024x768	I	pillow	5,572.069	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.thumbnail.native-i32-1024x768	I	python-cpu	2,071.054	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.thumbnail.native-i32-1024x768	I	python-simd	1,787.804	100	completed; parity_pass: pass; simd → simd
pipeline-op.filter.material-l-noise-5x5-1024x768	L	pillow	12,614.929	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.filter.material-l-noise-5x5-1024x768	L	python-cpu	1,961.496	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.filter.material-l-noise-5x5-1024x768	L	python-simd	1,185.389	100	completed; parity_pass: pass; simd → simd
pipeline-op.filter.material-l-noise-flat-5x5-1024x768	L	pillow	11,862.164	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.filter.material-l-noise-flat-5x5-1024x768	L	python-cpu	1,552.843	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.filter.material-l-noise-flat-5x5-1024x768	L	python-simd	1,249.049	100	completed; parity_pass: pass; simd → simd
pipeline-op.filter.material-la-noise-5x5-1024x768	LA	pillow	25,980.285	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.filter.material-la-noise-5x5-1024x768	LA	python-cpu	8,327.507	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.filter.material-la-noise-5x5-1024x768	LA	python-simd	2,019.704	100	completed; parity_pass: pass; simd → simd
pipeline-op.filter.material-la-nonmatching-5x5-1024x768	LA	pillow	25,994.562	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.filter.material-la-nonmatching-5x5-1024x768	LA	python-cpu	6,438.567	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.filter.material-la-nonmatching-5x5-1024x768	LA	python-simd	3,265.797	100	completed; parity_pass: pass; simd → simd
pipeline-op.filter.material-la-noise-3x3-1024x768	LA	pillow	11,481.015	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.filter.material-la-noise-3x3-1024x768	LA	python-cpu	4,721.932	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.filter.material-la-noise-3x3-1024x768	LA	python-simd	4,765.635	100	completed; parity_pass: pass; simd → simd
pipeline-op.filter.material-i-noise-5x5-1024x768	I	pillow	14,448.288	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.filter.material-i-noise-5x5-1024x768	I	python-cpu	4,521.573	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.filter.material-i-noise-5x5-1024x768	I	python-simd	5,663.172	100	completed; parity_pass: pass; simd → simd
pipeline-op.filter.material-i-bounded-noise-5x5-1024x768	I	pillow	15,055.198	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.filter.material-i-bounded-noise-5x5-1024x768	I	python-cpu	4,014.099	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.filter.material-i-bounded-noise-5x5-1024x768	I	python-simd	5,792.338	100	completed; parity_pass: pass; simd → simd
pipeline-op.rotate.material-rgb-nearest-noise-recovered-20261016-1024x768	RGB	pillow	2,941.822	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.rotate.material-rgb-nearest-noise-recovered-20261016-1024x768	RGB	python-cpu	2,862.403	100	completed; parity_pass: pass; cpu → cpu
pipeline-op.rotate.material-rgb-nearest-noise-recovered-20261016-1024x768	RGB	python-simd	1,468.062	100	completed; parity_pass: pass; simd → simd
pipeline-op.rotate.material-rgba-nearest-37deg-noise-fill-1024x768	RGBA	pillow	6,382.981	100	completed; parity_pass: pass; pillow → pillow
pipeline-op.rotate.material-rgba-nearest-37deg-noise-fill-1024x768	RGBA	python-cpu	3,749.189	100	completed; parity_pass: pass; cpu → cpu
pil-imagefilter.gaussianblur.standard	RGB	pillow	30,419.845	100	completed; parity_pass: pass; pillow → pillow
pil-imagefilter.gaussianblur.standard	RGB	python-cpu	10,052.572	100	completed; parity_pass: pass; cpu → cpu
pil-imagefilter.gaussianblur.standard	RGB	python-simd	10,846.753	100	completed; parity_pass: pass; simd → simd
pil-image-image.getchannel.materialized.l-1024x768	L	pillow	121.311	100	completed; parity_pass: pass; pillow → pillow
pil-image-image.getchannel.materialized.l-1024x768	L	python-cpu	39.424	100	completed; parity_pass: pass; cpu → cpu
pil-image-image.getchannel.materialized.l-1024x768	L	python-simd	88.620	100	completed; parity_pass: pass; simd → simd
pil-image-image.getchannel.materialized.rgb-1024x768	RGB	pillow	279.602	100	completed; parity_pass: pass; pillow → pillow
pil-image-image.getchannel.materialized.rgb-1024x768	RGB	python-cpu	380.361	100	completed; parity_pass: pass; cpu → cpu
pil-image-image.getchannel.materialized.rgb-1024x768	RGB	python-simd	83.772	100	completed; parity_pass: pass; simd → simd
pil-image-image.getchannel.materialized.la-1024x768	LA	pillow	265.435	100	completed; parity_pass: pass; pillow → pillow
pil-image-image.getchannel.materialized.la-1024x768	LA	python-cpu	238.004	100	completed; parity_pass: pass; cpu → cpu
pil-image-image.getchannel.materialized.la-1024x768	LA	python-simd	85.059	100	completed; parity_pass: pass; simd → simd
pil-image-image.getchannel.materialized.rgba-1024x768	RGBA	pillow	280.284	100	completed; parity_pass: pass; pillow → pillow
pil-image-image.getchannel.materialized.rgba-1024x768	RGBA	python-cpu	240.574	100	completed; parity_pass: pass; cpu → cpu
pil-image-image.getchannel.materialized.rgba-1024x768	RGBA	python-simd	109.429	100	completed; parity_pass: pass; simd → simd
pipeline-op.boxblur.material-l-noise-1024x768-radius-1	L	pillow-simd	4,453.895	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.boxblur.material-rgb-noise-1024x768-radius-1	RGB	pillow-simd	5,870.788	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.gaussianblur.material-l-noise-1024x768	L	pillow-simd	9,576.044	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.gaussianblur.material-la-noise-1024x768	LA	pillow-simd	8,758.592	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.unsharpmask.material-rgb-noise-1024x768-radius-2	RGB	pillow-simd	21,579.616	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.convert-mode-cmyk-to-rgb-1024x768	CMYK	pillow-simd	3,662.311	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.thumbnail.material-rgb-1024x768	RGB	pillow-simd	590.278	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.merge.material-rgb-l-1024x768	RGB	pillow-simd	2,703.490	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.posterize.material-l-noise-1024x768	L	pillow-simd	535.024	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.posterize.material-rgb-noise-1024x768	RGB	pillow-simd	2,813.867	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.medianfilter.material-l-noise-1024x768	L	pillow-simd	67,976.042	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.medianfilter.material-la-noise-1024x768	LA	pillow-simd	136,044.523	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.medianfilter.material-rgb-noise-1024x768	RGB	pillow-simd	205,486.457	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.maxfilter.material-rgb-noise-1024x768	RGB	pillow-simd	150,568.542	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.minfilter.material-rgb-noise-1024x768	RGB	pillow-simd	146,498.686	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.maxfilter.material-l-noise-1024x768	L	pillow-simd	47,483.084	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.maxfilter.material-la-noise-1024x768	LA	pillow-simd	98,182.954	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.minfilter.material-l-noise-1024x768	L	pillow-simd	49,392.347	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.minfilter.material-la-noise-1024x768	LA	pillow-simd	99,672.582	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.grayscale.material-rgb-noise-1024x768	RGB	pillow-simd	326.841	100	completed; Pillow-SIMD compatibility: fail; pillow-simd → pillow-simd
pipeline-op.grayscale.material-ycbcr-noise-1024x768	YCbCr	pillow-simd	145.371	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.thumbnail.native-f32-1024x768	F	pillow-simd	1,752.864	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.thumbnail.native-i32-1024x768	I	pillow-simd	5,359.658	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.filter.material-l-noise-5x5-1024x768	L	pillow-simd	4,049.775	100	completed; Pillow-SIMD compatibility: fail; pillow-simd → pillow-simd
pipeline-op.filter.material-l-noise-flat-5x5-1024x768	L	pillow-simd	4,049.735	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.filter.material-la-noise-5x5-1024x768	LA	pillow-simd	5,385.305	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.filter.material-la-nonmatching-5x5-1024x768	LA	pillow-simd	5,395.283	100	completed; Pillow-SIMD compatibility: fail; pillow-simd → pillow-simd
pipeline-op.filter.material-la-noise-3x3-1024x768	LA	pillow-simd	2,903.980	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.filter.material-i-noise-5x5-1024x768	I	pillow-simd	12,779.783	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.filter.material-i-bounded-noise-5x5-1024x768	I	pillow-simd	12,892.733	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.rotate.material-rgb-nearest-noise-recovered-20261016-1024x768	RGB	pillow-simd	2,942.778	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pipeline-op.rotate.material-rgba-nearest-37deg-noise-fill-1024x768	RGBA	pillow-simd	5,952.751	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pil-imagefilter.gaussianblur.standard	RGB	pillow-simd	9,582.246	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pil-image-image.getchannel.materialized.l-1024x768	L	pillow-simd	109.340	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pil-image-image.getchannel.materialized.rgb-1024x768	RGB	pillow-simd	206.710	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pil-image-image.getchannel.materialized.la-1024x768	LA	pillow-simd	202.173	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd
pil-image-image.getchannel.materialized.rgba-1024x768	RGBA	pillow-simd	217.667	100	completed; Pillow-SIMD compatibility: pass; pillow-simd → pillow-simd

Measurement 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.

Source revision: 5db7197532eb08b37d748a78fb789545ab8aa577 · Run: migration-benchmark-15a619ce4f8547ff84fb69e2fa482c31+migration-benchmark-231f0c51d0f845048dcc2e801d85d6d7 · Policy: Paired x86 cohort; pillow-rs CPU/SIMD correctness is gated against regular Pillow 12.1.1. Pillow-SIMD timings are compared only where its outputs also match regular Pillow..

Download the public measurement data or see the contributor benchmark guide.