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Benchmark comparison

Speed (wall time per call)

baseline ceeeb2a vs head ceeeb2a · python 3.11.15 · 5 repeats + 1 warmup

Showing the 5 most-changed measurements per case; the rest are collapsed. Rows with a baseline below 3 ms are tagged (noise) — runner jitter on those swamps any real change.

ct_3d — shape (73, 47, 73)

Measurement	baseline ms (median ±½·range)	head ms (median ±½·range)	Δ %	p
nii_rescale_seg	3.57 ±0.07	3.24 ±0.03	-9.3%	0.000
nii_dilate_msk	129.27 ±0.41	126.49 ±0.60	-2.1%	0.000
nii_load_seg	3.22 ±0.18	3.15 ±0.18	-2.1%	0.923
nii_erode_msk	6.51 ±0.05	6.40 ±0.08	-1.6%	0.250
nii_filter_connected_components	4.57 ±0.08	4.52 ±0.04	-1.1%	0.050

… 31 more measurements

Measurement	baseline ms (median ±½·range)	head ms (median ±½·range)	Δ %	p
nii_resample_from_to	42.82 ±1.09	42.34 ±0.30	-1.1%	0.221
nii_save	12.31 ±0.29	12.19 ±0.14	-0.9%	0.316
nii_load_img	11.18 ±0.17	11.28 ±0.12	+0.9%	0.142
nii_rescale	40.87 ±0.18	41.06 ±5.55	+0.5%	0.231
nii_fill_holes	4.73 ±0.05	4.75 ±0.10	+0.3%	0.963
poi_calc_centroids_nocrop	4.60 ±0.13	4.62 ±0.10	+0.3%	0.550
poi_calc_poi_from_subreg_vert	13.02 ±0.22	13.01 ±0.11	-0.1%	0.748
metric_voxels	250463.00 ±0.00	250463.00 ±0.00	+0.0%	—
metric_labels	3.00 ±0.00	3.00 ±0.00	+0.0%	—
metric_foreground_pct	14.51 ±0.00	14.51 ±0.00	+0.0%	—
nii_set_dtype	0.60 ±0.03	0.52 ±0.03	-12.3% (noise)	0.016
poi_local_to_global_arr	0.36 ±0.02	0.32 ±0.01	-11.0% (noise)	0.002
nii_reorient	0.97 ±0.03	0.87 ±0.02	-10.9% (noise)	0.000
nii_map_labels	1.23 ±0.03	1.13 ±0.02	-7.9% (noise)	0.000
nii_get_array	0.06 ±0.01	0.06 ±0.01	+7.8% (noise)	0.658
poi_rescale	0.24 ±0.02	0.25 ±0.01	+7.1% (noise)	0.407
poi_to_global	0.22 ±0.03	0.24 ±0.02	+5.2% (noise)	0.465
poi_resample_from_to	0.78 ±0.02	0.74 ±0.02	-5.1% (noise)	0.083
poi_save	0.52 ±0.03	0.50 ±0.02	-5.0% (noise)	0.031
nii_get_connected_components	2.52 ±0.06	2.40 ±0.05	-4.9% (noise)	0.014
nii_unique	0.73 ±0.02	0.70 ±0.01	-4.8% (noise)	0.006
poi_load	1.16 ±0.03	1.11 ±0.03	-4.8% (noise)	0.011
nii_volumes	1.98 ±0.06	1.89 ±0.03	-4.7% (noise)	0.026
nii_pad_to	0.75 ±0.03	0.72 ±0.02	-4.1% (noise)	0.036
nii_extract_label	0.50 ±0.03	0.48 ±0.01	-3.9% (noise)	0.165
poi_reorient	0.43 ±0.01	0.44 ±0.02	+2.4% (noise)	0.141
poi_calc_centroids	2.60 ±0.03	2.54 ±0.07	-2.2% (noise)	0.168
poi_map_labels	0.21 ±0.02	0.20 ±0.01	-1.7% (noise)	0.436
nii_compute_crop	0.34 ±0.01	0.33 ±0.01	-1.3% (noise)	0.626
nii_apply_crop	0.72 ±0.02	0.72 ±0.03	-1.2% (noise)	0.185
nii_center_of_masses	1.77 ±0.01	1.76 ±0.01	-0.7% (noise)	0.069

ct_2d — shape (73, 47, 1)

Measurement	baseline ms (median ±½·range)	head ms (median ±½·range)	Δ %	p
nii_rescale	5.79 ±0.20	5.41 ±0.07	-6.5%	0.029
nii_resample_from_to	7.59 ±0.06	7.74 ±0.07	+2.0%	0.008
nii_dilate_msk	15.11 ±0.09	14.93 ±0.03	-1.2%	0.006
metric_voxels	3431.00 ±0.00	3431.00 ±0.00	+0.0%	—
metric_labels	3.00 ±0.00	3.00 ±0.00	+0.0%	—

… 30 more measurements

Measurement	baseline ms (median ±½·range)	head ms (median ±½·range)	Δ %	p
metric_foreground_pct	37.60 ±0.00	37.60 ±0.00	+0.0%	—
nii_get_array	0.02 ±0.00	0.02 ±0.00	-11.6% (noise)	0.073
nii_set_dtype	0.47 ±0.02	0.43 ±0.01	-10.2% (noise)	0.003
poi_save	0.55 ±0.03	0.50 ±0.02	-9.7% (noise)	0.011
nii_volumes	0.33 ±0.02	0.30 ±0.01	-9.6% (noise)	0.010
nii_center_of_masses	0.24 ±0.06	0.22 ±0.01	-8.9% (noise)	0.201
poi_map_labels	0.24 ±0.02	0.22 ±0.01	-8.7% (noise)	0.114
nii_unique	0.14 ±0.01	0.13 ±0.00	-7.9% (noise)	0.028
nii_pad_to	0.64 ±0.03	0.59 ±0.02	-7.2% (noise)	0.006
poi_to_global	0.26 ±0.01	0.28 ±0.04	+6.1% (noise)	0.140
poi_load	1.26 ±0.04	1.19 ±0.06	-6.0% (noise)	0.075
nii_map_labels	0.55 ±0.03	0.52 ±0.03	-5.4% (noise)	0.091
poi_local_to_global_arr	0.37 ±0.01	0.35 ±0.04	-4.8% (noise)	0.433
nii_rescale_seg	0.85 ±0.03	0.81 ±0.01	-4.8% (noise)	0.020
nii_apply_crop	0.78 ±0.02	0.75 ±0.02	-4.6% (noise)	0.011
poi_rescale	0.30 ±0.02	0.29 ±0.01	-4.4% (noise)	0.707
nii_reorient	0.95 ±0.03	0.91 ±0.04	-3.9% (noise)	0.099
nii_fill_holes	0.95 ±0.01	0.91 ±0.02	-3.8% (noise)	0.084
nii_load_seg	1.87 ±0.05	1.80 ±0.02	-3.5% (noise)	0.038
nii_save	1.52 ±0.06	1.47 ±0.04	-3.3% (noise)	0.089
nii_erode_msk	1.10 ±0.04	1.07 ±0.02	-2.7% (noise)	0.075
nii_filter_connected_components	0.91 ±0.02	0.89 ±0.04	-2.3% (noise)	0.731
poi_calc_centroids_nocrop	1.21 ±0.05	1.24 ±0.03	+2.2% (noise)	0.974
nii_compute_crop	0.16 ±0.01	0.15 ±0.03	-2.1% (noise)	0.491
poi_calc_centroids	1.05 ±0.04	1.03 ±0.01	-2.0% (noise)	0.470
nii_load_img	1.64 ±0.09	1.66 ±0.03	+1.2% (noise)	0.883
nii_extract_label	0.50 ±0.02	0.49 ±0.03	-1.2% (noise)	0.235
nii_get_connected_components	0.70 ±0.01	0.70 ±0.03	-1.1% (noise)	0.118
poi_resample_from_to	0.79 ±0.11	0.78 ±0.02	-0.5% (noise)	0.412
poi_reorient	0.49 ±0.02	0.48 ±0.02	-0.2% (noise)	0.900

mri_3d — shape (68, 52, 67)

Measurement	baseline ms (median ±½·range)	head ms (median ±½·range)	Δ %	p
nii_load_seg	3.10 ±0.11	3.00 ±0.08	-3.4%	0.393
nii_dilate_msk	167.70 ±0.26	164.68 ±1.69	-1.8%	0.092
nii_load_img	9.04 ±0.15	8.90 ±0.05	-1.6%	0.026
nii_filter_connected_components	4.91 ±0.08	4.97 ±0.04	+1.3%	0.651
poi_calc_centroids_nocrop	8.97 ±0.16	8.87 ±0.43	-1.1%	0.388

… 31 more measurements

Measurement	baseline ms (median ±½·range)	head ms (median ±½·range)	Δ %	p
nii_rescale	38.40 ±0.08	38.80 ±5.25	+1.0%	0.341
nii_save	9.81 ±0.18	9.72 ±0.14	-1.0%	0.379
nii_fill_holes	5.54 ±0.09	5.51 ±0.09	-0.7%	0.469
nii_erode_msk	7.99 ±0.13	7.94 ±0.07	-0.6%	0.206
nii_rescale_seg	3.44 ±0.07	3.42 ±0.05	-0.6%	0.825
nii_resample_from_to	40.58 ±0.27	40.78 ±0.17	+0.5%	0.260
poi_calc_poi_from_subreg_vert	12.21 ±0.12	12.24 ±0.08	+0.2%	0.673
metric_voxels	236912.00 ±0.00	236912.00 ±0.00	+0.0%	—
metric_labels	8.00 ±0.00	8.00 ±0.00	+0.0%	—
metric_foreground_pct	18.21 ±0.00	18.21 ±0.00	+0.0%	—
poi_reorient	0.55 ±0.02	0.50 ±0.02	-8.0% (noise)	0.021
nii_map_labels	1.20 ±0.03	1.12 ±0.02	-7.0% (noise)	0.002
nii_get_connected_components	2.51 ±0.12	2.37 ±0.04	-5.6% (noise)	0.147
nii_get_array	0.06 ±0.00	0.05 ±0.00	-5.1% (noise)	0.572
nii_apply_crop	0.81 ±0.03	0.78 ±0.03	-4.1% (noise)	0.046
poi_rescale	0.33 ±0.01	0.32 ±0.02	-3.3% (noise)	0.023
nii_set_dtype	0.58 ±0.03	0.57 ±0.02	-2.0% (noise)	0.422
poi_resample_from_to	0.84 ±0.03	0.86 ±0.02	+1.5% (noise)	0.940
nii_volumes	2.01 ±0.02	2.04 ±0.02	+1.4% (noise)	0.028
poi_map_labels	0.27 ±0.01	0.27 ±0.01	+1.3% (noise)	0.799
poi_local_to_global_arr	0.35 ±0.02	0.35 ±0.02	+0.9% (noise)	0.698
poi_save	0.60 ±0.03	0.59 ±0.02	-0.9% (noise)	0.767
nii_center_of_masses	2.09 ±0.05	2.08 ±0.03	-0.8% (noise)	0.862
poi_to_global	0.29 ±0.01	0.29 ±0.01	+0.7% (noise)	0.623
poi_load	2.50 ±0.07	2.48 ±0.08	-0.5% (noise)	0.957
nii_pad_to	0.79 ±0.03	0.79 ±0.05	-0.4% (noise)	0.790
nii_extract_label	0.53 ±0.01	0.53 ±0.01	+0.3% (noise)	0.834
poi_calc_centroids	2.90 ±0.05	2.91 ±0.06	+0.3% (noise)	0.953
nii_reorient	0.92 ±0.04	0.92 ±0.03	-0.3% (noise)	0.599
nii_compute_crop	0.36 ±0.02	0.36 ±0.05	+0.1% (noise)	0.687
nii_unique	0.70 ±0.02	0.70 ±0.02	-0.0% (noise)	0.748

mri_2d — shape (68, 52, 1)

Measurement	baseline ms (median ±½·range)	head ms (median ±½·range)	Δ %	p
nii_rescale	5.64 ±0.07	5.46 ±0.04	-3.2%	0.002
nii_dilate_msk	20.20 ±0.14	19.85 ±0.04	-1.8%	0.003
nii_resample_from_to	7.73 ±0.04	7.70 ±0.07	-0.4%	0.225
metric_voxels	3536.00 ±0.00	3536.00 ±0.00	+0.0%	—
metric_labels	7.00 ±0.00	7.00 ±0.00	+0.0%	—

… 30 more measurements

Measurement	baseline ms (median ±½·range)	head ms (median ±½·range)	Δ %	p
metric_foreground_pct	50.17 ±0.00	50.17 ±0.00	+0.0%	—
nii_get_array	0.02 ±0.00	0.02 ±0.00	-10.4% (noise)	0.022
nii_map_labels	0.56 ±0.02	0.50 ±0.01	-10.1% (noise)	0.000
nii_load_seg	1.96 ±0.09	1.79 ±0.05	-8.6% (noise)	0.010
nii_get_connected_components	0.74 ±0.02	0.68 ±0.04	-8.2% (noise)	0.153
poi_save	0.60 ±0.02	0.56 ±0.02	-7.7% (noise)	0.017
nii_erode_msk	1.40 ±0.03	1.31 ±0.04	-6.2% (noise)	0.002
poi_calc_centroids	1.29 ±0.10	1.21 ±0.06	-5.8% (noise)	0.199
nii_unique	0.13 ±0.01	0.13 ±0.00	-5.8% (noise)	0.276
nii_pad_to	0.61 ±0.01	0.58 ±0.02	-5.7% (noise)	0.005
nii_volumes	0.52 ±0.03	0.49 ±0.03	-4.9% (noise)	0.374
nii_reorient	0.92 ±0.05	0.88 ±0.03	-4.7% (noise)	0.148
nii_center_of_masses	0.46 ±0.02	0.45 ±0.01	-3.8% (noise)	0.051
nii_extract_label	0.45 ±0.04	0.44 ±0.01	-3.6% (noise)	0.152
nii_apply_crop	0.73 ±0.02	0.70 ±0.04	-3.5% (noise)	0.850
poi_to_global	0.30 ±0.01	0.29 ±0.01	-3.3% (noise)	0.096
nii_set_dtype	0.43 ±0.01	0.42 ±0.01	-3.2% (noise)	0.084
nii_save	1.47 ±0.04	1.43 ±0.02	-3.0% (noise)	0.011
poi_load	2.25 ±0.06	2.32 ±0.08	+3.0% (noise)	0.117
nii_fill_holes	1.16 ±0.03	1.13 ±0.01	-2.7% (noise)	0.046
nii_compute_crop	0.15 ±0.01	0.15 ±0.01	+2.5% (noise)	0.092
poi_calc_centroids_nocrop	1.55 ±0.04	1.52 ±0.02	-2.1% (noise)	0.864
nii_rescale_seg	0.84 ±0.03	0.83 ±0.03	-2.0% (noise)	0.983
poi_reorient	0.52 ±0.01	0.51 ±0.01	-1.9% (noise)	0.573
poi_local_to_global_arr	0.34 ±0.01	0.35 ±0.01	+1.8% (noise)	0.267
poi_resample_from_to	0.84 ±0.02	0.83 ±0.03	-1.3% (noise)	0.868
poi_rescale	0.30 ±0.01	0.30 ±0.01	+0.9% (noise)	0.947
nii_filter_connected_components	0.91 ±0.01	0.90 ±0.03	-0.7% (noise)	0.907
nii_load_img	1.65 ±0.06	1.63 ±0.04	-0.7% (noise)	0.388
poi_map_labels	0.27 ±0.02	0.27 ±0.04	-0.2% (noise)	0.974

Gate: a measurement fails when the baseline is ≥ 1 ms, the median grows by ≥ 50%, and Welch's t-test gives p < 0.05. metric_* rows are context only.

Memory (peak RSS growth per call)

baseline ceeeb2a vs head ceeeb2a · python 3.11.15 · 5 repeats + 1 warmup · sampler proc-status, isolation fork · measurement floor ≈ 0.96 MiB

Showing the 5 most-changed measurements per case; the rest are collapsed. Rows with a baseline below 3 MiB are tagged (noise) — runner jitter on those swamps any real change.

ct_3d — shape (73, 47, 73)

Measurement	baseline MiB (median ±½·range)	head MiB (median ±½·range)	Δ %	p
nii_load_img	3.51 ±0.00	3.60 ±0.00	+2.7%	—
nii_save	3.69 ±0.00	3.79 ±0.00	+2.5%	—
poi_to_global	3.09 ±0.00	3.15 ±0.00	+2.2%	—
nii_center_of_masses	3.28 ±0.00	3.34 ±0.00	+2.0%	—
nii_volumes	3.53 ±0.00	3.59 ±0.00	+1.9%	—

… 31 more measurements

Measurement	baseline MiB (median ±½·range)	head MiB (median ±½·range)	Δ %	p
nii_load_seg	5.89 ±0.00	6.00 ±0.00	+1.8%	—
nii_apply_crop	5.79 ±0.00	5.89 ±0.00	+1.8%	—
poi_reorient	3.84 ±0.00	3.90 ±0.00	+1.7%	—
nii_rescale_seg	5.86 ±0.00	5.96 ±0.00	+1.6%	—
nii_get_connected_components	6.54 ±0.00	6.64 ±0.00	+1.6%	—
nii_rescale	6.05 ±0.00	6.14 ±0.00	+1.5%	—
nii_resample_from_to	6.18 ±0.00	6.27 ±0.00	+1.5%	—
nii_set_dtype	5.18 ±0.00	5.26 ±0.00	+1.5%	—
nii_filter_connected_components	6.79 ±0.00	6.89 ±0.00	+1.5%	—
nii_extract_label	5.37 ±0.00	5.45 ±0.00	+1.5%	—
poi_calc_poi_from_subreg_vert	7.02 ±0.00	7.12 ±0.00	+1.4%	—
nii_map_labels	5.43 ±0.00	5.51 ±0.00	+1.4%	—
poi_resample_from_to	5.18 ±0.00	5.25 ±0.00	+1.4%	—
poi_calc_centroids	6.00 ±0.00	6.07 ±0.00	+1.3%	—
nii_fill_holes	6.23 ±0.00	6.30 ±0.00	+1.3%	—
nii_pad_to	5.37 ±0.00	5.43 ±0.00	+1.2%	—
nii_reorient	5.81 ±0.00	5.88 ±0.00	+1.2%	—
poi_calc_centroids_nocrop	5.87 ±0.00	5.93 ±0.00	+1.1%	—
nii_dilate_msk	5.87 ±0.00	5.93 ±0.00	+1.0%	—
nii_erode_msk	5.89 ±0.00	5.93 ±0.00	+0.7%	—
metric_voxels	250463.00 ±0.00	250463.00 ±0.00	+0.0%	—
metric_labels	3.00 ±0.00	3.00 ±0.00	+0.0%	—
metric_foreground_pct	14.51 ±0.00	14.51 ±0.00	+0.0%	—
poi_save	1.41 ±0.00	1.47 ±0.00	+4.4% (noise)	—
poi_load	1.62 ±0.00	1.68 ±0.00	+3.9% (noise)	—
nii_get_array	1.66 ±0.00	1.72 ±0.00	+3.8% (noise)	—
poi_map_labels	1.78 ±0.00	1.84 ±0.00	+3.5% (noise)	—
poi_rescale	2.61 ±0.00	2.68 ±0.00	+2.5% (noise)	—
nii_compute_crop	2.90 ±0.00	2.97 ±0.00	+2.3% (noise)	—
poi_local_to_global_arr	2.96 ±0.00	3.03 ±0.00	+2.2% (noise)	—
nii_unique	2.96 ±0.00	3.03 ±0.00	+2.2% (noise)	—

ct_2d — shape (73, 47, 1)

Measurement	baseline MiB (median ±½·range)	head MiB (median ±½·range)	Δ %	p
nii_load_img	3.44 ±0.00	3.53 ±0.00	+2.7%	—
nii_save	3.62 ±0.00	3.71 ±0.00	+2.6%	—
poi_to_global	3.02 ±0.00	3.08 ±0.00	+2.2%	—
nii_center_of_masses	3.21 ±0.00	3.27 ±0.00	+2.1%	—
nii_volumes	3.46 ±0.00	3.52 ±0.00	+1.9%	—

… 30 more measurements

Measurement	baseline MiB (median ±½·range)	head MiB (median ±½·range)	Δ %	p
nii_load_seg	5.82 ±0.00	5.93 ±0.00	+1.8%	—
nii_apply_crop	5.71 ±0.00	5.82 ±0.00	+1.8%	—
poi_reorient	3.77 ±0.00	3.83 ±0.00	+1.8%	—
nii_rescale_seg	5.79 ±0.00	5.89 ±0.00	+1.6%	—
nii_get_connected_components	6.46 ±0.00	6.57 ±0.00	+1.6%	—
nii_rescale	5.98 ±0.00	6.07 ±0.00	+1.6%	—
nii_resample_from_to	6.11 ±0.00	6.20 ±0.00	+1.5%	—
nii_set_dtype	5.11 ±0.00	5.19 ±0.00	+1.5%	—
nii_filter_connected_components	6.71 ±0.00	6.82 ±0.00	+1.5%	—
nii_extract_label	5.30 ±0.00	5.38 ±0.00	+1.5%	—
nii_map_labels	5.36 ±0.00	5.44 ±0.00	+1.5%	—
poi_resample_from_to	5.11 ±0.00	5.18 ±0.00	+1.4%	—
poi_calc_centroids	5.93 ±0.00	6.00 ±0.00	+1.3%	—
nii_fill_holes	6.16 ±0.00	6.23 ±0.00	+1.3%	—
nii_pad_to	5.30 ±0.00	5.36 ±0.00	+1.3%	—
nii_reorient	5.74 ±0.00	5.81 ±0.00	+1.2%	—
poi_calc_centroids_nocrop	5.86 ±0.00	5.93 ±0.00	+1.1%	—
nii_dilate_msk	5.80 ±0.00	5.86 ±0.00	+1.0%	—
nii_erode_msk	5.82 ±0.00	5.86 ±0.00	+0.7%	—
metric_voxels	3431.00 ±0.00	3431.00 ±0.00	+0.0%	—
metric_labels	3.00 ±0.00	3.00 ±0.00	+0.0%	—
metric_foreground_pct	37.60 ±0.00	37.60 ±0.00	+0.0%	—
poi_save	1.34 ±0.00	1.40 ±0.00	+4.7% (noise)	—
poi_load	1.55 ±0.00	1.61 ±0.00	+4.0% (noise)	—
nii_get_array	1.59 ±0.00	1.65 ±0.00	+3.9% (noise)	—
poi_map_labels	1.71 ±0.00	1.77 ±0.00	+3.7% (noise)	—
poi_rescale	2.54 ±0.00	2.61 ±0.00	+2.6% (noise)	—
nii_compute_crop	2.83 ±0.00	2.90 ±0.00	+2.3% (noise)	—
poi_local_to_global_arr	2.89 ±0.00	2.96 ±0.00	+2.3% (noise)	—
nii_unique	2.89 ±0.00	2.96 ±0.00	+2.3% (noise)	—

mri_3d — shape (68, 52, 67)

Measurement	baseline MiB (median ±½·range)	head MiB (median ±½·range)	Δ %	p
nii_load_img	3.50 ±0.00	3.59 ±0.00	+2.7%	—
nii_save	3.62 ±0.00	3.71 ±0.00	+2.6%	—
poi_to_global	3.02 ±0.00	3.08 ±0.00	+2.2%	—
nii_center_of_masses	3.21 ±0.00	3.27 ±0.00	+2.1%	—
nii_volumes	3.46 ±0.00	3.52 ±0.00	+1.9%	—

… 31 more measurements

Measurement	baseline MiB (median ±½·range)	head MiB (median ±½·range)	Δ %	p
nii_load_seg	5.82 ±0.00	5.93 ±0.00	+1.8%	—
nii_apply_crop	5.71 ±0.00	5.82 ±0.00	+1.8%	—
poi_reorient	3.77 ±0.00	3.83 ±0.00	+1.8%	—
nii_rescale_seg	5.79 ±0.00	5.89 ±0.00	+1.6%	—
nii_get_connected_components	6.46 ±0.00	6.57 ±0.00	+1.6%	—
nii_rescale	5.98 ±0.00	6.07 ±0.00	+1.6%	—
nii_resample_from_to	6.11 ±0.00	6.20 ±0.00	+1.5%	—
nii_filter_connected_components	6.71 ±0.00	6.82 ±0.00	+1.5%	—
nii_set_dtype	5.18 ±0.00	5.25 ±0.00	+1.5%	—
nii_extract_label	5.30 ±0.00	5.38 ±0.00	+1.5%	—
nii_map_labels	5.36 ±0.00	5.44 ±0.00	+1.5%	—
poi_calc_poi_from_subreg_vert	7.02 ±0.00	7.12 ±0.00	+1.4%	—
poi_resample_from_to	5.11 ±0.00	5.18 ±0.00	+1.4%	—
poi_calc_centroids	5.93 ±0.00	6.00 ±0.00	+1.3%	—
nii_fill_holes	6.16 ±0.00	6.23 ±0.00	+1.3%	—
nii_pad_to	5.30 ±0.00	5.36 ±0.00	+1.3%	—
nii_reorient	5.74 ±0.00	5.81 ±0.00	+1.2%	—
poi_calc_centroids_nocrop	5.80 ±0.00	5.86 ±0.00	+1.1%	—
nii_dilate_msk	5.80 ±0.00	5.86 ±0.00	+1.0%	—
nii_erode_msk	5.82 ±0.00	5.86 ±0.00	+0.7%	—
metric_voxels	236912.00 ±0.00	236912.00 ±0.00	+0.0%	—
metric_labels	8.00 ±0.00	8.00 ±0.00	+0.0%	—
metric_foreground_pct	18.21 ±0.00	18.21 ±0.00	+0.0%	—
poi_save	1.40 ±0.00	1.46 ±0.00	+4.5% (noise)	—
poi_load	1.55 ±0.00	1.61 ±0.00	+4.0% (noise)	—
nii_get_array	1.59 ±0.00	1.65 ±0.00	+3.9% (noise)	—
poi_map_labels	1.71 ±0.00	1.77 ±0.00	+3.7% (noise)	—
poi_rescale	2.54 ±0.00	2.61 ±0.00	+2.6% (noise)	—
nii_compute_crop	2.83 ±0.00	2.90 ±0.00	+2.3% (noise)	—
poi_local_to_global_arr	2.89 ±0.00	2.96 ±0.00	+2.3% (noise)	—
nii_unique	2.89 ±0.00	2.96 ±0.00	+2.3% (noise)	—

mri_2d — shape (68, 52, 1)

Measurement	baseline MiB (median ±½·range)	head MiB (median ±½·range)	Δ %	p
nii_load_img	3.50 ±0.00	3.59 ±0.00	+2.7%	—
nii_save	3.62 ±0.00	3.71 ±0.00	+2.6%	—
poi_to_global	3.02 ±0.00	3.08 ±0.00	+2.2%	—
nii_center_of_masses	3.21 ±0.00	3.27 ±0.00	+2.1%	—
nii_volumes	3.46 ±0.00	3.52 ±0.00	+1.9%	—

… 30 more measurements

Measurement	baseline MiB (median ±½·range)	head MiB (median ±½·range)	Δ %	p
nii_load_seg	5.82 ±0.00	5.93 ±0.00	+1.8%	—
nii_apply_crop	5.71 ±0.00	5.82 ±0.00	+1.8%	—
poi_reorient	3.77 ±0.00	3.83 ±0.00	+1.8%	—
nii_rescale_seg	5.79 ±0.00	5.89 ±0.00	+1.6%	—
nii_get_connected_components	6.46 ±0.00	6.57 ±0.00	+1.6%	—
nii_rescale	5.98 ±0.00	6.07 ±0.00	+1.6%	—
nii_resample_from_to	6.11 ±0.00	6.20 ±0.00	+1.5%	—
nii_filter_connected_components	6.71 ±0.00	6.82 ±0.00	+1.5%	—
nii_set_dtype	5.18 ±0.00	5.25 ±0.00	+1.5%	—
nii_extract_label	5.30 ±0.00	5.38 ±0.00	+1.5%	—
nii_map_labels	5.36 ±0.00	5.44 ±0.00	+1.5%	—
poi_resample_from_to	5.11 ±0.00	5.18 ±0.00	+1.4%	—
poi_calc_centroids	5.93 ±0.00	6.00 ±0.00	+1.3%	—
nii_fill_holes	6.16 ±0.00	6.23 ±0.00	+1.3%	—
nii_pad_to	5.30 ±0.00	5.36 ±0.00	+1.3%	—
nii_reorient	5.74 ±0.00	5.81 ±0.00	+1.2%	—
poi_calc_centroids_nocrop	5.86 ±0.00	5.93 ±0.00	+1.1%	—
nii_dilate_msk	5.80 ±0.00	5.86 ±0.00	+1.0%	—
nii_erode_msk	5.82 ±0.00	5.86 ±0.00	+0.7%	—
metric_voxels	3536.00 ±0.00	3536.00 ±0.00	+0.0%	—
metric_labels	7.00 ±0.00	7.00 ±0.00	+0.0%	—
metric_foreground_pct	50.17 ±0.00	50.17 ±0.00	+0.0%	—
poi_save	1.40 ±0.00	1.46 ±0.00	+4.5% (noise)	—
poi_load	1.55 ±0.00	1.61 ±0.00	+4.0% (noise)	—
nii_get_array	1.59 ±0.00	1.65 ±0.00	+3.9% (noise)	—
poi_map_labels	1.71 ±0.00	1.77 ±0.00	+3.7% (noise)	—
poi_rescale	2.54 ±0.00	2.61 ±0.00	+2.6% (noise)	—
nii_compute_crop	2.83 ±0.00	2.90 ±0.00	+2.3% (noise)	—
poi_local_to_global_arr	2.89 ±0.00	2.96 ±0.00	+2.3% (noise)	—
nii_unique	2.89 ±0.00	2.96 ±0.00	+2.3% (noise)	—

Gate: a measurement fails when the baseline is ≥ 1 MiB, the median grows by ≥ 50%, and Welch's t-test gives p < 0.05. metric_* rows are context only.