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 23s

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 · c95d44218822130eebd6991443d932ea8eb3fc11
/home/runner/work/flying-circus/flying-circus/_runtimes/monty-main/bin/monty
Source build: https://github.com/pydantic/monty@c95d44218822130eebd6991443d932ea8eb3fc11; cargo build --locked --release -p monty-runtime --bin monty; rustc 1.99.0 (b940084d7 2026-09-28)
ee5dde3cf36acead98b665d6224771bd1cbf10d4e295de93b36a0de05cd1de9f

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
1.24	1.16	8.11	15.0

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	75.5 / 75.1	63.0 / 63.8	45.4 / 44.2	6.80 / 7.70
game_nbody	456 / 459	385 / 384	64.7 / 63.7	10.7 / 10.8
game_spectral_norm	371 / 373	302 / 304	67.0 / 65.8	12.5 / 12.6
game_fannkuch	n/a	n/a	236 / 235	51.1 / 51.2
expense_report	0.30 / 0.22	0.37 / 0.27	1.07 / 0.37	0.24 / 0.40
api_report	0.63 / 0.35	0.70 / 0.41	1.12 / 0.45	0.27 / 0.48
capacity_planning	36.1 / 34.8	36.3 / 35.0	10.4 / 9.06	2.52 / 2.79
order_cleanup	0.38 / 0.30	0.46 / 0.35	1.13 / 0.43	0.28 / 0.41
perf_float	227 / 199	254 / 210	50.6 / 44.6	13.5 / 13.0
perf_json_loads	1.11 / 0.79	1.24 / 0.91	2.07 / 1.24	0.70 / 0.80
perf_barnes_hut	3950 / 3960	3850 / 3860	592 / 588	378 / 306
game_regex_dna	n/a	n/a	177 / 170	127 / 91.8
stdout_lines	2.04 / 1.99	2.38 / 2.29	3.56 / 2.25	3.59 / 2.89
memory_string_list_short	183 / 162	184 / 151	81.6 / 73.7	49.7 / 56.1
perf_gc_traversal	n/a	n/a	12.9 / 13.4	7.91 / 1100
text_csv_aggregate_medium	332 / 318	340 / 329	67.4 / 63.0	55.1 / 41.4
game_pidigits	n/a	n/a	141 / 141	96.6 / 96.5
perf_json_dumps	8.66 / 6.97	9.70 / 7.86	11.4 / 10.1	12.4 / 10.4
text_json_parse_medium	9.80 / 7.09	10.3 / 7.51	9.06 / 7.92	6.33 / 6.25
memory_customer_records	414 / 361	377 / 337	140 / 138	126 / 97.3
text_json_transform_small	0.62 / 0.37	0.69 / 0.42	0.42 / 0.46	0.30 / 0.43
text_json_lines_medium	12.0 / 11.4	12.1 / 11.4	15.0 / 14.2	10.9 / 11.1
text_json_parse_small	0.51 / 0.27	0.54 / 0.29	0.27 / 0.30	0.20 / 0.33
game_meteor_contest	n/a	n/a	67.8 / 66.1	51.1 / 49.6
text_csv_cleanup_medium	647 / 627	672 / 658	128 / 123	110 / 96.0
memory_string_list_long	244 / 210	257 / 226	90.0 / 81.5	72.6 / 75.7
text_json_lines_small	0.63 / 0.39	0.67 / 0.42	0.46 / 0.48	0.41 / 0.48
memory_string_index_short	82.4 / 65.5	84.8 / 68.1	54.7 / 46.7	63.9 / 39.4
memory_string_index_long	115 / 91.6	124 / 101	62.4 / 53.8	72.0 / 45.9
text_json_transform_medium	11.7 / 8.86	12.1 / 9.17	9.73 / 8.28	9.05 / 8.73
text_line_logs_small	0.40 / 0.36	0.40 / 0.35	0.30 / 0.31	0.32 / 0.40
text_regex_logs_medium	21.8 / 20.8	20.1 / 19.2	12.5 / 11.6	15.7 / 12.7
text_regex_logs_small	1.00 / 0.63	1.04 / 0.66	0.53 / 0.43	1.48 / 0.62
text_line_logs_medium	17.1 / 16.8	14.9 / 14.5	7.06 / 5.98	10.4 / 9.85
ticket_search	24.2 / 23.1	22.8 / 21.8	7.61 / 6.78	11.6 / 11.7
perf_unpack_sequence	217 / 218	216 / 215	13.4 / 11.9	30.3 / 30.4
text_csv_aggregate_small	3.72 / 3.53	3.85 / 3.66	1.37 / 1.36	4.57 / 4.91
text_csv_cleanup_small	6.76 / 6.48	7.11 / 6.83	2.03 / 2.03	8.05 / 8.68

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
portfolio_risk	19.2	19.3	19.4	58.5
text_json_parse_small	19.4	19.3	19.4	58.0
capacity_planning	19.3	19.3	19.4	58.2
text_csv_aggregate_small	19.4	19.5	19.5	58.7
stdout_lines	19.3	19.4	19.4	59.4
text_json_lines_medium	23.6	23.6	23.6	124
text_json_transform_small	19.4	19.5	19.4	57.9
text_json_parse_medium	23.6	23.6	23.6	126
order_cleanup	19.4	19.3	19.3	57.5
ticket_search	19.3	19.4	19.3	60.3
perf_json_dumps	19.3	19.2	19.3	60.6
text_line_logs_small	19.4	19.4	19.4	57.9
game_spectral_norm	19.3	19.3	19.3	59.2
text_regex_logs_medium	21.5	21.6	21.5	127
text_line_logs_medium	23.6	23.7	23.7	125
api_report	19.3	19.3	19.3	57.5
expense_report	19.3	19.3	19.3	57.6
perf_barnes_hut	19.4	19.4	19.4	88.9
text_json_lines_small	19.5	19.5	19.5	57.9
perf_unpack_sequence	19.4	19.5	19.4	63.0
text_json_transform_medium	23.7	23.7	23.6	126
game_nbody	19.4	19.3	19.3	58.8
text_csv_cleanup_small	19.4	19.4	19.3	59.2
text_regex_logs_small	19.5	19.5	19.4	58.2
perf_json_loads	19.3	19.3	19.2	57.5
memory_string_index_long	67.6	67.7	53.4	124
memory_string_index_short	56.0	56.1	41.7	108
text_csv_cleanup_medium	49.9	49.4	33.1	147
text_csv_aggregate_medium	42.2	41.8	27.4	149
memory_string_list_long	112	113	69.2	125
memory_string_list_short	89.8	90.0	45.9	99.5
memory_customer_records	157	156	67.4	134
perf_float	57.7	57.2	28.4	69.9
game_fannkuch	n/a	n/a	19.3	58.7
game_meteor_contest	n/a	n/a	19.4	61.0
game_pidigits	n/a	n/a	19.3	65.0
perf_gc_traversal	n/a	n/a	19.3	66.1
game_regex_dna	n/a	n/a	19.4	87.2