CodSpeed HQ / CodSpeed Performance Analysis
failed
Jan 19, 2026
Performance Regression: -41.88%
⚡ 34 improved benchmarks
❌ 27 regressed benchmarks
✅ 1193 untouched benchmarks
⏩ 1254 skipped benchmarks1
⚠️ Please fix the performance issues or acknowledge them on CodSpeed .
Performance Changes
Mode
Benchmark
BASE
HEAD
Efficiency
⚡
Simulation
bench_compare_primitive[(100000, 128)]
849.5 µs
745.3 µs
+13.98%
⚡
Simulation
bench_compare_primitive[(100000, 2048)]
926.1 µs
822.1 µs
+12.65%
⚡
Simulation
bench_compare_primitive[(100000, 2)]
846.9 µs
743.1 µs
+13.97%
⚡
Simulation
bench_compare_primitive[(100000, 32)]
847.3 µs
743.2 µs
+14.02%
⚡
Simulation
bench_compare_primitive[(100000, 4)]
847.3 µs
743.3 µs
+13.99%
⚡
Simulation
bench_compare_primitive[(100000, 8)]
846.2 µs
743 µs
+13.9%
⚡
Simulation
bench_compare_primitive[(100000, 512)]
901.9 µs
798.3 µs
+12.98%
❌
Simulation
bench_compare_sliced_dict_varbinview[(2000, 10000)]
324.7 µs
417.3 µs
-22.19%
❌
Simulation
bench_compare_sliced_dict_varbinview[(1000, 10000)]
242.7 µs
289 µs
-16.04%
❌
Simulation
bench_compare_sliced_dict_varbinview[(10000, 10000)]
494.7 µs
836.1 µs
-40.84%
❌
Simulation
bench_compare_sliced_dict_varbinview[(20000, 10000)]
690 µs
1,154.8 µs
-40.25%
❌
Simulation
bench_compare_sliced_dict_varbinview[(2500, 10000)]
381.1 µs
497.4 µs
-23.38%
❌
Simulation
bench_compare_sliced_dict_varbinview[(9999, 10000)]
494.7 µs
836.3 µs
-40.85%
❌
Simulation
bench_compare_sliced_dict_varbinview[(5000, 10000)]
661.3 µs
895.1 µs
-26.12%
❌
Simulation
bench_compare_sliced_dict_varbinview[(7500, 10000)]
474.1 µs
815.7 µs
-41.88%
❌
Simulation
bench_compare_varbin[(10000, 512)]
214 µs
238.4 µs
-10.22%
⚡
Simulation
bench_compare_varbin[(100000, 2)]
853.8 µs
750.6 µs
+13.76%
⚡
Simulation
bench_compare_varbin[(100000, 128)]
862.2 µs
765.1 µs
+12.69%
❌
Simulation
bench_compare_sliced_dict_varbinview[(3333, 10000)]
474.9 µs
630.5 µs
-24.68%
❌
Simulation
bench_compare_varbin[(10000, 2048)]
304.9 µs
410.5 µs
-25.71%
...
...
...
...
...
...
ℹ️ Only the first 20 benchmarks are displayed. Go to the app to view all benchmarks .
Comparing ji/remove-vector-from-arrow (4205757 ) with develop (6838253 )2