Application benchmarks

CPU: AMD EPYC 9V45 96-Core Processor · 4 logical CPUs
OS: Linux-6.17.0-1022-azure-x86_64-with-glibc2.39
Samples: 20
Parallel jobs: 1
Run duration: 16m 40s

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 3.14.8 · 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 · e74249051f6bb3df88fe8a0178e022272e14c1c6
/home/runner/work/flying-circus/flying-circus/_runtimes/monty-main/bin/monty
Source build: https://github.com/pydantic/monty@e74249051f6bb3df88fe8a0178e022272e14c1c6; cargo build --locked --release -p monty-runtime --bin monty; rustc 1.99.0 (b940084d7 2026-09-28)
05ab1e28d68cf4e7cf218a8902cb81b8fad4890b1230ff9cc979f81d908a7b87

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

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	PyPy
1.43	1.39	8.92	17.2

Runtime · ms · one-shot / repeated

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

Workload	Monty	Monty main	CPython	PyPy
portfolio_risk	76.5 / 76.2	63.6 / 63.0	46.0 / 44.6	7.28 / 7.75
game_nbody	444 / 439	426 / 420	66.0 / 65.2	11.0 / 10.9
game_spectral_norm	365 / 356	326 / 321	69.6 / 68.6	13.2 / 13.7
game_fannkuch	n/a	n/a	241 / 234	53.3 / 51.6
expense_report	0.34 / 0.23	0.40 / 0.29	1.13 / 0.35	0.27 / 0.40
capacity_planning	36.9 / 35.0	37.4 / 35.7	10.8 / 9.57	2.70 / 2.99
api_report	0.67 / 0.35	0.75 / 0.39	1.17 / 0.43	0.30 / 0.52
order_cleanup	0.41 / 0.32	0.48 / 0.35	1.17 / 0.45	0.31 / 0.49
perf_float	244 / 208	262 / 211	53.5 / 46.6	14.6 / 13.5
perf_json_loads	1.18 / 0.85	1.33 / 0.92	2.13 / 1.25	0.73 / 0.92
perf_barnes_hut	4070 / 4010	3980 / 3910	610 / 596	397 / 251
game_regex_dna	n/a	n/a	182 / 174	133 / 93.7
stdout_lines	2.17 / 2.19	2.50 / 2.33	3.71 / 2.27	3.82 / 3.07
memory_string_list_short	202 / 179	191 / 163	83.7 / 74.3	51.7 / 73.7
perf_json_dumps	8.68 / 6.80	9.91 / 7.83	11.8 / 10.3	13.0 / 11.1
game_pidigits	n/a	n/a	145 / 141	98.7 / 99.6
memory_customer_records	437 / 351	414 / 358	147 / 142	136 / 97.3
text_json_parse_medium	10.0 / 7.09	10.6 / 7.63	9.79 / 8.61	6.80 / 6.76
text_csv_aggregate_medium	350 / 320	365 / 331	70.5 / 64.0	60.1 / 46.1
text_json_transform_small	0.66 / 0.40	0.74 / 0.44	0.45 / 0.46	0.33 / 0.46
text_json_lines_medium	12.6 / 12.0	12.4 / 11.7	15.6 / 14.4	11.6 / 12.6
game_meteor_contest	n/a	n/a	69.5 / 66.1	53.3 / 49.6
text_json_parse_small	0.55 / 0.28	0.58 / 0.30	0.29 / 0.32	0.22 / 0.36
text_csv_cleanup_medium	710 / 630	746 / 678	134 / 125	115 / 101
text_json_lines_small	0.68 / 0.42	0.73 / 0.45	0.49 / 0.51	0.44 / 0.50
memory_string_list_long	265 / 229	263 / 231	92.5 / 83.4	76.0 / 76.1
memory_string_index_short	98.0 / 76.6	94.6 / 72.2	58.8 / 48.6	70.5 / 41.0
text_json_transform_medium	12.0 / 8.87	12.6 / 9.25	10.3 / 9.17	9.78 / 8.97
memory_string_index_long	134 / 102	142 / 103	69.6 / 54.1	81.2 / 56.5
text_line_logs_small	0.42 / 0.38	0.44 / 0.37	0.32 / 0.35	0.35 / 0.41
text_regex_logs_medium	22.7 / 21.8	21.2 / 20.2	12.9 / 11.6	16.7 / 13.2
text_regex_logs_small	1.05 / 0.65	1.10 / 0.70	0.54 / 0.45	1.56 / 0.60
text_line_logs_medium	17.2 / 16.6	16.0 / 15.6	7.47 / 6.08	11.0 / 10.2
ticket_search	24.1 / 22.2	25.5 / 23.5	7.93 / 6.18	12.2 / 12.2
perf_unpack_sequence	217 / 216	222 / 219	13.8 / 12.0	31.5 / 31.0
text_csv_aggregate_small	3.79 / 3.56	3.94 / 3.69	1.41 / 1.43	4.86 / 5.07
text_csv_cleanup_small	6.75 / 6.42	7.22 / 6.92	2.08 / 2.05	8.39 / 9.07

Peak RSS · MiB · one-shot

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

Workload	Monty	Monty main	CPython	PyPy
text_json_lines_small	19.5	19.2	19.4	58.0
order_cleanup	19.3	19.4	19.4	57.6
game_nbody	19.2	19.3	19.3	58.8
ticket_search	19.3	19.3	19.4	60.2
perf_json_dumps	19.3	19.3	19.4	60.6
text_json_transform_small	19.4	19.4	19.5	57.9
text_regex_logs_small	19.4	19.4	19.5	58.2
stdout_lines	19.3	19.3	19.4	59.4
portfolio_risk	19.3	19.3	19.3	58.7
text_line_logs_small	19.5	19.4	19.5	57.9
text_json_parse_medium	23.7	23.7	23.7	126
capacity_planning	19.3	19.3	19.3	58.2
text_csv_cleanup_small	19.5	19.5	19.5	59.2
perf_json_loads	19.3	19.4	19.4	57.5
perf_unpack_sequence	19.4	19.4	19.4	62.9
text_line_logs_medium	23.6	23.7	23.7	125
api_report	19.3	19.4	19.3	57.6
text_csv_aggregate_small	19.5	19.5	19.5	58.7
text_json_lines_medium	23.6	23.6	23.6	124
text_json_transform_medium	23.7	23.7	23.7	126
expense_report	19.3	19.3	19.3	57.5
game_spectral_norm	19.3	19.4	19.3	59.2
perf_barnes_hut	19.4	19.5	19.4	88.9
text_json_parse_small	19.5	19.5	19.4	57.9
text_regex_logs_medium	21.6	21.6	21.5	127
memory_string_index_long	67.7	67.9	53.3	124
memory_string_index_short	56.0	56.5	41.7	108
text_csv_cleanup_medium	49.8	49.6	33.1	147
text_csv_aggregate_medium	42.3	41.8	27.4	149
memory_string_list_long	112	113	69.2	125
memory_string_list_short	89.6	90.1	45.9	99.6
memory_customer_records	156	157	67.4	134
perf_float	57.6	57.5	28.4	70.0
game_fannkuch	n/a	n/a	19.3	58.8
game_meteor_contest	n/a	n/a	19.4	61.0
game_pidigits	n/a	n/a	19.3	64.9
game_regex_dna	n/a	n/a	19.3	87.2