Application benchmarks

CPU: AMD EPYC 9V74 80-Core Processor · 4 logical CPUs
OS: Linux-6.17.0-1022-azure-x86_64-with-glibc2.39
Samples: 10
Parallel jobs: 1
Run duration: 19m 1s

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 · @main: Monty 1.1.0 · Python 3.15: 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 · 07419285903bd6f929e779d2eb3b85eea902448f
/home/runner/work/flying-circus/flying-circus/_runtimes/monty-main/bin/monty
Source build: https://github.com/pydantic/monty@07419285903bd6f929e779d2eb3b85eea902448f; cargo build --locked --release -p monty-runtime --bin monty; rustc 1.99.1 (58cf8f9c3 2026-10-13)
e1ed9334115b786093d08b57587908ae07f74da9f0c6acc409d0e028e31da7cd

python3.15 · 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

Chart baseline

Process startup · ms

Monty	@main	Python 3.15	PyPy
1.89	1.76	14.4	25.9

Runtime · ms · one-shot / repeated

Bars: Python 3.15 = midpoint · blue above = faster, red below = slower · shared asinh scale (5% transition)

Workload	Monty	@main	Python 3.15	PyPy
game_nbody	834 / 835	554 / 555	167 / 144	19.5 / 19.5
portfolio_risk	154 / 154	147 / 147	97.1 / 87.7	13.5 / 14.4
game_spectral_norm	778 / 780	611 / 613	160 / 136	22.6 / 22.4
game_fannkuch	n/a	2320 / 2330	482 / 455	96.9 / 97.3
capacity_planning	86.2 / 84.2	72.9 / 70.8	21.3 / 16.8	4.51 / 4.66
expense_report	0.43 / 0.31	0.50 / 0.34	1.85 / 0.54	0.40 / 0.53
api_report	0.85 / 0.43	0.94 / 0.45	1.90 / 0.60	0.45 / 0.62
order_cleanup	0.50 / 0.35	0.58 / 0.42	1.95 / 0.61	0.48 / 0.63
perf_float	406 / 360	505 / 457	102 / 94.5	25.6 / 23.8
perf_json_loads	1.68 / 1.13	1.93 / 1.38	3.53 / 2.05	1.23 / 1.46
perf_barnes_hut	7370 / 7360	7450 / 7470	1360 / 1240	698 / 573
game_regex_dna	n/a	failed / failed	366 / 350	227 / 168
stdout_lines	3.61 / 3.70	3.96 / 3.96	7.19 / 4.54	6.46 / 4.81
memory_string_list_short	341 / 285	328 / 283	168 / 150	92.5 / 99.1
memory_customer_records	675 / 605	642 / 577	269 / 253	210 / 140
text_csv_aggregate_medium	639 / 615	675 / 647	139 / 131	99.4 / 77.6
text_json_lines_medium	21.2 / 20.3	23.8 / 23.1	27.2 / 25.6	18.5 / 18.4
text_json_parse_medium	16.3 / 11.4	19.4 / 14.5	15.4 / 12.8	10.7 / 10.1
perf_json_dumps	14.7 / 11.7	17.7 / 14.6	19.1 / 16.5	23.0 / 18.8
text_json_lines_small	0.97 / 0.56	1.06 / 0.65	0.81 / 0.80	0.72 / 0.76
memory_string_index_short	163 / 131	165 / 131	110 / 94.9	114 / 67.7
memory_string_list_long	472 / 413	448 / 383	179 / 161	128 / 132
game_meteor_contest	n/a	586 / 590	127 / 119	92.8 / 90.7
text_json_transform_small	0.94 / 0.51	1.00 / 0.57	0.70 / 0.69	0.52 / 0.64
text_csv_cleanup_medium	1250 / 1220	1320 / 1300	256 / 249	194 / 188
text_json_parse_small	0.77 / 0.39	0.85 / 0.46	0.47 / 0.47	0.37 / 0.48
game_pidigits	n/a	n/a	221 / 219	195 / 194
text_line_logs_small	0.59 / 0.54	0.60 / 0.56	0.54 / 0.58	0.60 / 0.64
text_json_transform_medium	19.7 / 14.7	22.6 / 17.6	16.9 / 14.1	15.8 / 15.3
memory_string_index_long	235 / 192	227 / 181	124 / 108	129 / 107
text_regex_logs_medium	38.7 / 37.4	38.7 / 37.3	23.4 / 21.0	28.2 / 21.9
text_regex_logs_small	1.50 / 0.95	1.57 / 1.02	0.91 / 0.71	2.64 / 0.95
text_line_logs_medium	27.6 / 27.0	24.6 / 24.1	13.2 / 11.8	17.6 / 16.3
ticket_search	44.2 / 42.1	39.9 / 37.7	15.1 / 11.5	20.4 / 19.5
perf_unpack_sequence	361 / 363	112 / 112	26.6 / 24.6	60.3 / 58.9
text_csv_aggregate_small	6.93 / 6.55	7.31 / 6.92	2.62 / 2.49	8.21 / 8.18
text_csv_cleanup_small	12.7 / 12.2	13.5 / 13.1	4.01 / 3.80	14.6 / 14.9

Peak RSS · MiB · one-shot

Bars: Python 3.15 = midpoint · blue above = less memory, red below = more memory · shared asinh scale (5% transition)

Workload	Monty	@main	Python 3.15	PyPy
text_json_lines_medium	24.7	24.7	24.8	124
text_json_parse_small	19.9	20.0	20.0	57.9
text_json_transform_medium	24.2	24.3	24.3	126
expense_report	19.9	20.0	20.0	57.5
api_report	19.9	20.0	20.0	57.4
order_cleanup	19.9	20.0	20.0	57.5
text_line_logs_medium	24.3	24.3	24.3	125
text_regex_logs_small	19.9	20.0	19.9	58.2
ticket_search	19.9	19.9	19.9	60.2
text_json_parse_medium	24.4	24.2	24.3	126
text_line_logs_small	19.9	19.9	19.9	57.9
text_json_transform_small	20.0	19.9	19.9	57.9
portfolio_risk	20.0	20.0	20.0	58.6
game_meteor_contest	n/a	19.9	19.9	60.9
game_fannkuch	n/a	19.9	19.9	58.6
text_json_lines_small	20.0	20.0	20.0	57.8
text_regex_logs_medium	22.2	22.1	22.1	127
text_csv_cleanup_small	20.0	19.9	19.9	59.2
game_nbody	20.0	20.0	19.9	58.7
perf_json_dumps	20.0	20.0	19.9	60.6
perf_json_loads	19.9	20.0	19.9	57.5
capacity_planning	20.0	20.0	19.9	58.1
perf_unpack_sequence	19.9	20.0	19.8	62.7
text_csv_aggregate_small	19.9	19.9	19.9	58.6
stdout_lines	20.0	20.0	19.9	59.4
game_spectral_norm	20.0	20.0	19.9	59.1
perf_barnes_hut	20.0	20.0	19.9	88.8
memory_string_index_long	67.6	67.8	53.9	124
memory_string_index_short	56.0	56.9	42.3	108
text_csv_cleanup_medium	49.6	49.6	33.8	147
text_csv_aggregate_medium	42.4	42.2	28.0	149
memory_string_list_long	113	113	69.7	125
memory_string_list_short	89.2	89.7	46.5	99.5
perf_float	57.5	57.8	29.4	69.9
memory_customer_records	156	157	68.0	134
game_pidigits	n/a	n/a	20.0	64.9
game_regex_dna	n/a	failed	20.0	87.2