Application benchmarks

CPU: AMD EPYC 7763 64-Core Processor · 4 logical CPUs
OS: Linux-6.17.0-1022-azure-x86_64-with-glibc2.39
Samples: 20
Parallel jobs: 1
Run duration: 33m 21s

Measurement details

Repeated warmups: 3
Timing: Median ms · one-shot / repeated · startup excluded
RSS: Median MiB · separate one-shot processes including startup
Startup: Empty -c command · launch through exit · normal defaults
Sort: Percentage advantage vs chart reference · largest improvement first; click headers to reorder

Monty 1.1.0 · Monty main: Monty 1.1.0 · cpython-baseline: CPython 3.14.8 · CPython 3.15.0 · PyPy 8.0.0

Runtimes and build details

monty · monty · 1.1.0
/home/runner/work/flying-circus/flying-circus/_runtimes/monty/bin/monty
Prebuilt PyPI wheel: pydantic-monty-runtime==1.1.0; source revision and compiler flags unverified
c9d19e7256886558c67678582d0d223de3eb05232f69da9da657ab9e090f3f35

monty-main · monty · c3045d5435859e5d679e9e427b98a1bc28c13877
/home/runner/work/flying-circus/flying-circus/_runtimes/monty-main/bin/monty
Source build: https://github.com/pydantic/monty@c3045d5435859e5d679e9e427b98a1bc28c13877; cargo build --locked --release -p monty-runtime --bin monty; rustc 1.99.0 (b940084d7 2026-09-28)
fc8793eb36ed04d2ee46e79844218874b332a0cdf5add06eeb0dbe9a845e6455

cpython-baseline · cpython · Python 3.14.8
/opt/hostedtoolcache/Python/3.14.8/x64/bin/python3.14
Source revision and compiler flags unverified
a5230d8adbd26c2185d77fb003597c4ee9c44c2369fc179122ff7c3a3a58ae59

cpython · cpython · Python 3.15.0
/opt/hostedtoolcache/Python/3.15.0/x64/bin/python3.15
Source revision and compiler flags unverified
fd580ad81787ecc7e71f91543dbe52ffccd3e5c4cf286565eceb539081e85992

pypy · pypy · Python 3.11.16 (78565394c9b5, Sep 18 2026, 08:00:14) [PyPy 8.0.0 with GCC 14.2.1 20250110 (Red Hat 14.2.1-11)]
/opt/hostedtoolcache/PyPy/3.11.16/x64/bin/pypy3.11
Source revision and compiler flags unverified
7aebd6513a8f1dc8529abecf80d25b66951ddb5e9bab14b2750a7dab7947a94d

Process startup · ms

Monty	Monty main	cpython-baseline	CPython	PyPy
1.81	1.78	13.2	13.3	25.5

Runtime · ms · one-shot / repeated

Bars: cpython-baseline = midpoint · blue above = faster, red below = slower · shared asinh scale (5% transition)

Workload	Monty	Monty main	cpython-baseline	CPython	PyPy
game_nbody	782 / 781	744 / 746	150 / 148	140 / 137	19.3 / 19.3
portfolio_risk	169 / 169	108 / 108	84.4 / 84.6	88.0 / 87.7	12.4 / 14.1
game_spectral_norm	684 / 683	571 / 572	135 / 138	142 / 136	22.4 / 22.5
game_fannkuch	n/a	n/a	492 / 490	458 / 453	87.7 / 87.8
capacity_planning	81.8 / 79.9	62.3 / 60.8	21.7 / 20.2	18.1 / 16.5	4.33 / 4.87
expense_report	0.39 / 0.34	0.45 / 0.37	1.90 / 0.58	1.76 / 0.57	0.45 / 0.58
order_cleanup	0.48 / 0.43	0.52 / 0.43	1.95 / 0.64	1.82 / 0.63	0.52 / 0.64
perf_float	388 / 348	485 / 421	95.4 / 88.7	95.2 / 89.8	24.5 / 22.5
api_report	0.82 / 0.47	0.90 / 0.54	1.94 / 0.63	1.80 / 0.62	0.51 / 0.64
perf_json_loads	1.62 / 1.20	1.80 / 1.35	3.68 / 2.24	3.45 / 2.09	1.28 / 1.61
game_regex_dna	n/a	n/a	316 / 311	344 / 333	218 / 150
stdout_lines	3.65 / 3.85	4.30 / 4.49	6.86 / 4.81	6.92 / 4.88	6.61 / 5.15
memory_string_list_short	323 / 276	296 / 246	157 / 150	162 / 150	85.1 / 174
perf_barnes_hut	7010 / 7050	7570 / 7570	1260 / 1260	1250 / 1240	712 / 699
perf_json_dumps	14.3 / 11.9	16.2 / 13.7	21.5 / 19.7	18.9 / 17.2	23.7 / 18.6
text_json_parse_medium	14.9 / 11.0	16.7 / 12.8	17.0 / 15.8	15.7 / 14.4	10.5 / 11.0
text_csv_aggregate_medium	586 / 572	624 / 610	137 / 133	137 / 133	97.1 / 83.2
memory_customer_records	596 / 496	557 / 456	257 / 262	257 / 264	205 / 173
text_json_lines_medium	20.0 / 19.4	21.9 / 21.1	28.2 / 26.9	26.8 / 26.2	18.6 / 19.2
memory_string_index_short	148 / 130	150 / 125	105 / 109	111 / 111	106 / 77.8
game_meteor_contest	n/a	n/a	123 / 122	122 / 120	90.7 / 88.0
memory_string_list_long	440 / 375	416 / 345	165 / 159	174 / 160	120 / 177
memory_string_index_long	213 / 185	215 / 179	117 / 119	122 / 121	120 / 88.2
text_csv_cleanup_medium	1150 / 1140	1230 / 1230	257 / 257	264 / 261	195 / 195
text_json_transform_small	0.88 / 0.58	0.97 / 0.61	0.71 / 0.73	0.68 / 0.73	0.54 / 0.66
text_json_lines_small	0.93 / 0.67	0.99 / 0.69	0.80 / 0.83	0.79 / 0.84	0.73 / 0.78
text_json_parse_small	0.77 / 0.47	0.81 / 0.49	0.49 / 0.52	0.47 / 0.50	0.40 / 0.65
text_json_transform_medium	18.1 / 14.5	19.7 / 16.1	18.5 / 17.0	17.1 / 15.8	15.8 / 16.5
game_pidigits	n/a	n/a	197 / 196	205 / 205	177 / 180
text_line_logs_small	0.58 / 0.57	0.60 / 0.57	0.55 / 0.61	0.55 / 0.61	0.62 / 0.71
text_regex_logs_medium	38.1 / 37.4	35.6 / 34.1	24.9 / 24.2	25.4 / 24.3	28.7 / 23.0
perf_unpack_sequence	333 / 341	347 / 345	27.1 / 23.6	26.4 / 23.5	58.1 / 59.5
ticket_search	41.4 / 40.1	42.6 / 41.4	14.1 / 11.8	13.9 / 11.7	20.4 / 20.5
text_csv_aggregate_small	6.34 / 6.01	6.72 / 6.43	2.53 / 2.48	2.51 / 2.47	8.29 / 8.90
text_csv_cleanup_small	11.7 / 11.3	12.6 / 12.2	3.80 / 3.76	3.85 / 3.77	14.9 / 16.2
text_line_logs_medium	26.3 / 25.7	26.1 / 25.8	13.7 / 12.2	13.8 / 12.5	17.5 / 17.1
text_regex_logs_small	1.44 / 0.99	1.48 / 1.03	0.92 / 0.79	0.92 / 0.81	2.68 / 1.07

Peak RSS · MiB · one-shot

Bars: cpython-baseline = midpoint · blue above = less memory, red below = more memory · shared asinh scale (5% transition)

Workload	Monty	Monty main	cpython-baseline	CPython	PyPy
perf_unpack_sequence	19.9	19.9	20.0	20.0	62.9
order_cleanup	19.9	20.0	20.0	20.0	57.5
capacity_planning	19.9	19.9	20.0	20.0	58.1
perf_json_dumps	20.0	19.8	19.9	20.0	60.6
api_report	20.0	19.9	20.0	19.9	57.5
portfolio_risk	19.9	19.9	20.0	20.0	58.5
game_regex_dna	n/a	n/a	20.0	19.9	87.2
text_regex_logs_small	20.0	19.9	20.0	20.0	58.1
text_json_lines_small	20.0	20.0	20.0	19.9	57.9
text_line_logs_small	20.0	20.0	20.0	20.0	57.9
stdout_lines	20.0	19.9	20.0	19.9	59.4
text_json_transform_small	19.9	19.9	19.9	19.9	57.9
text_json_lines_medium	24.9	24.8	24.8	24.8	124
game_pidigits	n/a	n/a	19.9	19.9	64.9
text_json_parse_medium	24.3	24.2	24.3	24.3	126
text_json_parse_small	20.0	20.0	20.0	20.0	57.9
expense_report	20.0	20.0	20.0	20.0	57.5
text_line_logs_medium	24.3	24.4	24.3	24.3	125
perf_json_loads	20.0	20.0	19.9	19.9	57.5
game_fannkuch	n/a	n/a	20.0	20.0	58.8
ticket_search	19.9	20.0	19.9	20.0	60.2
text_regex_logs_medium	22.2	22.1	22.1	22.2	127
text_csv_aggregate_small	20.0	19.9	19.9	20.0	58.6
game_meteor_contest	n/a	n/a	20.0	20.0	60.9
game_nbody	19.9	19.9	19.9	20.0	58.7
perf_barnes_hut	19.9	20.0	19.9	20.0	88.8
game_spectral_norm	20.0	19.9	19.9	20.0	59.1
text_json_transform_medium	24.2	24.3	24.1	24.3	126
text_csv_cleanup_small	20.0	20.0	19.9	20.0	59.2
memory_string_list_long	112	112	68.9	69.7	125
memory_customer_records	156	157	67.2	68.0	134
memory_string_index_long	67.6	67.6	53.2	53.9	124
memory_string_list_short	89.5	89.7	45.7	46.5	99.4
memory_string_index_short	55.9	55.9	41.5	42.3	108
text_csv_cleanup_medium	49.7	49.3	33.2	33.8	147
text_csv_aggregate_medium	41.9	41.7	27.3	27.9	149
perf_float	57.5	57.5	28.3	29.4	69.9