Application benchmarks

CPU: INTEL(R) XEON(R) PLATINUM 8573C · 4 logical CPUs
OS: Linux-6.17.0-1022-azure-x86_64-with-glibc2.39
Samples: 10
Parallel jobs: 1
Run duration: 11m 46s

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 · 5e67aa85bdf3e026c046a92f6e94aa02fd94c0fb
/home/runner/work/flying-circus/flying-circus/_runtimes/monty-main/bin/monty
Source build: https://github.com/pydantic/monty@5e67aa85bdf3e026c046a92f6e94aa02fd94c0fb; cargo build --locked --release -p monty-runtime --bin monty; rustc 1.99.0 (b940084d7 2026-09-28)
ba6b1a92f0098585713682f32b84ef5ce7356841679d74b7a7a61b8ec38414e8

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
1.05	1.03	9.57	13.1

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	501 / 506	358 / 358	102 / 101	15.2 / 14.8
portfolio_risk	92.3 / 92.2	80.6 / 80.4	71.0 / 70.5	12.1 / 10.9
perf_float	294 / 277	316 / 285	72.9 / 71.5	15.1 / 13.7
game_spectral_norm	454 / 455	335 / 337	100 / 99.3	22.6 / 19.5
game_fannkuch	n/a	n/a	367 / 367	87.6 / 75.6
expense_report	0.36 / 0.32	0.43 / 0.34	1.46 / 0.43	0.33 / 0.43
api_report	0.69 / 0.46	0.74 / 0.44	1.52 / 0.54	0.39 / 0.51
order_cleanup	0.43 / 0.31	0.50 / 0.38	1.50 / 0.51	0.40 / 0.56
capacity_planning	49.3 / 48.1	47.0 / 45.8	13.4 / 12.0	3.59 / 3.47
perf_json_loads	1.38 / 1.06	1.46 / 1.18	2.72 / 1.67	0.95 / 1.08
perf_barnes_hut	4710 / 4720	4460 / 4480	925 / 928	393 / 409
text_json_parse_medium	11.8 / 9.82	12.4 / 11.0	12.1 / 10.9	5.83 / 6.06
stdout_lines	2.98 / 2.95	2.78 / 3.18	5.46 / 3.86	4.85 / 4.08
game_regex_dna	n/a	failed / failed	275 / 270	208 / 158
text_csv_aggregate_medium	438 / 429	458 / 450	96.9 / 94.9	69.8 / 62.2
memory_customer_records	411 / 384	406 / 357	197 / 195	137 / 129
memory_string_index_short	113 / 106	114 / 105	87.4 / 79.6	76.8 / 54.3
memory_string_list_short	245 / 220	233 / 209	119 / 112	82.3 / 79.7
memory_string_list_long	321 / 297	314 / 286	128 / 122	91.9 / 105
perf_json_dumps	11.0 / 9.61	12.0 / 10.6	14.4 / 12.8	18.5 / 13.7
text_json_transform_medium	14.5 / 12.6	15.4 / 13.6	12.9 / 12.5	10.0 / 9.49
text_json_lines_medium	15.4 / 15.0	16.3 / 16.1	19.7 / 19.2	16.0 / 15.0
text_json_lines_small	0.75 / 0.54	0.82 / 0.63	0.61 / 0.64	0.78 / 0.68
game_pidigits	n/a	n/a	178 / 179	158 / 156
game_meteor_contest	n/a	failed / failed	104 / 102	94.1 / 91.1
text_json_transform_small	0.71 / 0.49	0.81 / 0.55	0.53 / 0.54	0.65 / 0.55
memory_string_index_long	154 / 140	165 / 144	95.5 / 89.5	87.8 / 85.3
text_csv_cleanup_medium	857 / 843	896 / 885	182 / 179	173 / 166
text_line_logs_small	0.47 / 0.43	0.46 / 0.43	0.44 / 0.46	0.70 / 0.59
text_json_parse_small	0.62 / 0.42	0.62 / 0.40	0.38 / 0.37	0.52 / 0.42
text_regex_logs_medium	26.9 / 25.9	25.7 / 24.7	18.0 / 17.6	34.9 / 23.9
text_line_logs_medium	18.1 / 17.9	16.0 / 15.7	10.1 / 9.22	14.6 / 12.8
text_regex_logs_small	1.16 / 0.86	1.16 / 0.85	0.70 / 0.58	1.87 / 0.89
ticket_search	29.6 / 28.8	26.0 / 24.8	11.0 / 8.80	17.3 / 16.3
perf_unpack_sequence	286 / 294	83.3 / 82.6	19.9 / 17.9	49.3 / 45.1
text_csv_aggregate_small	4.94 / 4.73	5.09 / 4.89	1.87 / 1.88	6.87 / 6.67
text_csv_cleanup_small	9.01 / 8.70	9.42 / 9.17	2.78 / 2.75	12.4 / 12.3

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
ticket_search	20.1	19.9	20.1	85.0
game_nbody	20.0	20.0	20.1	77.9
api_report	20.0	20.0	20.1	67.1
text_csv_aggregate_small	20.0	20.0	20.1	73.7
perf_json_loads	20.0	20.0	20.0	67.1
text_json_parse_medium	24.3	24.4	24.4	222
capacity_planning	20.0	20.0	20.0	71.4
perf_barnes_hut	20.0	20.0	20.1	191
text_line_logs_small	20.1	20.0	20.1	69.1
order_cleanup	20.0	20.1	20.1	67.1
stdout_lines	20.0	20.0	20.0	70.6
text_json_lines_small	20.0	20.0	20.1	69.1
text_regex_logs_small	20.0	20.1	20.0	69.3
text_json_lines_medium	24.8	24.9	24.8	238
expense_report	20.0	20.0	20.0	67.1
text_line_logs_medium	24.3	24.3	24.3	242
perf_json_dumps	20.1	20.1	20.1	92.5
portfolio_risk	20.1	20.1	20.0	93.8
text_csv_cleanup_small	20.0	20.0	20.0	80.2
game_spectral_norm	20.0	20.1	19.9	114
text_json_transform_small	20.0	20.0	19.9	69.1
text_regex_logs_medium	22.3	22.3	22.2	267
text_json_transform_medium	24.4	24.4	24.3	228
text_json_parse_small	20.1	20.1	20.0	69.1
perf_unpack_sequence	20.0	20.0	19.9	138
memory_string_index_long	67.6	67.7	54.0	236
memory_string_index_short	56.0	56.5	42.4	210
text_csv_cleanup_medium	50.0	49.6	33.8	277
text_csv_aggregate_medium	42.2	42.2	28.1	268
memory_string_list_long	112	113	69.8	234
memory_string_list_short	89.9	89.7	46.6	232
perf_float	57.7	57.4	29.4	93.7
memory_customer_records	157	157	68.1	257
game_fannkuch	n/a	n/a	20.0	184
game_pidigits	n/a	n/a	20.0	185
game_meteor_contest	n/a	failed	20.0	186
game_regex_dna	n/a	failed	20.1	218