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: 29m 19s

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 · ae5d3f03ae20b80677b1d9a8808653358fc21785
/home/runner/work/flying-circus/flying-circus/_runtimes/monty-main/bin/monty
Source build: https://github.com/pydantic/monty@ae5d3f03ae20b80677b1d9a8808653358fc21785; cargo build --locked --release -p monty-runtime --bin monty; rustc 1.99.0 (b940084d7 2026-09-28)
9da2d67989738f54fb7cd0b375fd99a52bc8362ee8ab88d22b86aa182dbd9b3e

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
1.83	1.69	13.3	25.1

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
game_nbody	756 / 756	723 / 717	146 / 144	19.7 / 19.3
portfolio_risk	149 / 148	108 / 108	88.3 / 83.0	12.8 / 13.8
game_spectral_norm	685 / 688	606 / 605	144 / 139	22.9 / 22.5
game_fannkuch	n/a	n/a	504 / 492	87.9 / 88.0
capacity_planning	77.3 / 75.2	61.8 / 59.5	22.7 / 19.7	4.69 / 4.54
expense_report	0.41 / 0.32	0.46 / 0.36	1.98 / 0.56	0.48 / 0.54
order_cleanup	0.48 / 0.39	0.56 / 0.44	2.05 / 0.62	0.55 / 0.62
perf_float	390 / 348	469 / 400	97.0 / 89.8	25.1 / 22.5
api_report	0.84 / 0.47	0.92 / 0.52	2.02 / 0.61	0.55 / 0.63
perf_json_loads	1.63 / 1.21	1.81 / 1.32	3.83 / 2.16	1.33 / 1.41
game_regex_dna	n/a	n/a	323 / 311	220 / 150
perf_barnes_hut	6960 / 6950	7490 / 7500	1280 / 1260	740 / 633
stdout_lines	3.66 / 3.88	4.09 / 3.67	7.03 / 4.62	6.83 / 4.91
memory_string_list_short	330 / 285	313 / 274	157 / 144	86.1 / 172
text_csv_aggregate_medium	597 / 577	627 / 605	142 / 133	99.2 / 77.3
perf_json_dumps	14.3 / 11.9	16.5 / 13.6	22.1 / 19.6	24.5 / 20.4
text_json_parse_medium	15.4 / 11.3	17.3 / 13.0	17.6 / 15.7	10.8 / 12.1
text_json_lines_medium	21.1 / 20.4	21.9 / 20.9	28.5 / 26.5	19.0 / 19.7
memory_customer_records	601 / 507	567 / 505	262 / 258	207 / 173
game_meteor_contest	n/a	n/a	127 / 121	93.1 / 88.0
memory_string_list_long	445 / 387	442 / 399	168 / 156	122 / 168
text_csv_cleanup_medium	1180 / 1140	1240 / 1210	263 / 252	198 / 186
text_json_lines_small	0.95 / 0.62	1.01 / 0.68	0.85 / 0.84	0.78 / 0.77
text_json_transform_small	0.91 / 0.55	0.97 / 0.60	0.73 / 0.72	0.58 / 0.67
memory_string_index_short	168 / 137	168 / 128	115 / 98.2	112 / 77.1
text_json_parse_small	0.77 / 0.43	0.85 / 0.50	0.51 / 0.51	0.41 / 0.58
text_json_transform_medium	18.7 / 14.2	20.2 / 15.6	18.9 / 16.8	16.2 / 16.0
game_pidigits	n/a	n/a	197 / 196	179 / 180
memory_string_index_long	231 / 188	244 / 190	127 / 110	131 / 104
text_regex_logs_medium	38.8 / 37.5	37.6 / 35.6	25.3 / 23.8	29.0 / 23.0
text_line_logs_small	0.59 / 0.57	0.62 / 0.59	0.57 / 0.59	0.64 / 0.67
text_regex_logs_small	1.45 / 0.95	1.50 / 1.01	0.98 / 0.76	2.83 / 1.02
text_line_logs_medium	26.9 / 26.4	27.1 / 26.5	14.0 / 12.1	17.7 / 16.9
ticket_search	41.8 / 39.5	43.0 / 41.0	14.6 / 11.3	21.2 / 20.4
perf_unpack_sequence	334 / 341	338 / 344	28.1 / 23.5	58.7 / 57.4
text_csv_aggregate_small	6.43 / 6.05	6.74 / 6.38	2.61 / 2.51	8.55 / 8.57
text_csv_cleanup_small	11.9 / 11.4	12.6 / 12.1	3.89 / 3.74	15.3 / 15.6

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_transform_small	19.4	19.3	19.4	57.9
capacity_planning	19.2	19.2	19.3	58.1
text_csv_aggregate_small	19.3	19.3	19.4	58.6
text_json_transform_medium	23.6	23.6	23.7	126
text_regex_logs_small	19.3	19.4	19.4	58.1
perf_barnes_hut	19.3	19.4	19.4	88.8
stdout_lines	19.2	19.2	19.2	59.4
order_cleanup	19.3	19.3	19.3	57.5
perf_json_dumps	19.3	19.2	19.2	60.6
portfolio_risk	19.2	19.2	19.2	58.4
text_json_parse_medium	23.6	23.7	23.6	126
text_json_lines_medium	23.5	23.7	23.5	124
api_report	19.3	19.2	19.2	57.5
game_spectral_norm	19.2	19.3	19.2	59.1
perf_unpack_sequence	19.3	19.3	19.3	62.9
game_nbody	19.3	19.2	19.2	58.8
text_regex_logs_medium	21.5	21.5	21.5	127
text_csv_cleanup_small	19.4	19.4	19.3	59.1
text_line_logs_small	19.4	19.4	19.3	57.9
text_json_lines_small	19.4	19.4	19.4	57.9
perf_json_loads	19.3	19.3	19.2	57.4
expense_report	19.3	19.3	19.2	57.5
text_json_parse_small	19.4	19.4	19.3	57.9
ticket_search	19.3	19.3	19.2	60.2
text_line_logs_medium	23.7	23.7	23.5	125
memory_string_index_long	67.5	67.9	53.2	124
memory_string_index_short	55.8	56.3	41.6	108
text_csv_cleanup_medium	49.8	49.4	33.1	147
text_csv_aggregate_medium	42.1	41.8	27.4	149
memory_string_list_long	112	112	69.0	125
memory_string_list_short	89.3	89.1	45.8	99.4
memory_customer_records	156	157	67.3	134
perf_float	57.6	57.1	28.4	70.0
game_fannkuch	n/a	n/a	19.2	58.7
game_meteor_contest	n/a	n/a	19.2	60.9
game_pidigits	n/a	n/a	19.3	64.9
game_regex_dna	n/a	n/a	19.3	87.2