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: 16m 34s

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 1.3.0 · @main: Monty 1.4.0 · Python 3.15: CPython 3.15.1 · PyPy 8.0.0

Runtimes and build details

monty · monty · 1.3.0
/home/runner/work/flying-circus/flying-circus/_runtimes/monty/bin/monty
Prebuilt PyPI wheel: pydantic-monty-runtime==1.3.0; source revision and compiler flags unverified
4fdda193d2e9d21a9656c2a6fa428715d51c69a3755aed5b5a72177aeffec4a7

monty-main · monty · ebdccb09ab3fbd0cbc39382f501c67fea62e7541
/home/runner/work/flying-circus/flying-circus/_runtimes/monty-main/bin/monty
Source build: https://github.com/pydantic/monty@ebdccb09ab3fbd0cbc39382f501c67fea62e7541; cargo build --locked --release -p monty-runtime --bin monty; rustc 1.99.1 (58cf8f9c3 2026-10-13)
5b29b70816fc9f28b650989d6cbcccd0f21022e109c59a66b3a48b19e8ecc992

python3.15 · cpython · Python 3.15.1
/opt/hostedtoolcache/Python/3.15.1/x64/bin/python3.15
Source revision and compiler flags unverified
3359482397c7a8e9b84606a9d825c3b4e2c2b89ff622d8ddb9a84e939699180a

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
1.52	1.54	12.2	20.5

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	483 / 482	473 / 472	117 / 115	17.9 / 17.6
portfolio_risk	116 / 116	115 / 114	84.1 / 83.4	14.2 / 14.3
perf_float	370 / 343	410 / 368	87.9 / 84.1	17.9 / 15.7
game_spectral_norm	498 / 496	477 / 476	118 / 116	26.5 / 22.9
game_fannkuch	1850 / 1840	1910 / 1890	429 / 429	104 / 90.1
expense_report	0.45 / 0.36	0.48 / 0.36	1.79 / 0.52	0.41 / 0.54
api_report	0.85 / 0.54	0.94 / 0.52	1.80 / 0.59	0.47 / 0.60
capacity_planning	62.0 / 60.7	59.7 / 58.2	16.1 / 14.4	4.25 / 4.20
order_cleanup	0.52 / 0.37	0.57 / 0.46	1.83 / 0.60	0.48 / 0.63
perf_json_loads	1.67 / 1.33	1.78 / 1.38	3.33 / 1.98	1.17 / 1.31
text_json_parse_medium	14.6 / 12.1	15.5 / 12.9	14.3 / 12.8	7.06 / 7.34
perf_barnes_hut	5370 / 5360	5820 / 5790	1100 / 1090	596 / 589
stdout_lines	3.59 / 3.33	3.63 / 3.03	6.38 / 4.52	5.63 / 4.68
game_regex_dna	failed / failed	failed / failed	311 / 303	258 / 192
memory_customer_records	542 / 514	547 / 516	237 / 241	171 / 159
memory_string_list_short	302 / 273	294 / 262	138 / 130	97.4 / 89.8
memory_string_list_long	389 / 357	394 / 364	150 / 140	109 / 121
text_csv_aggregate_medium	553 / 540	573 / 561	117 / 113	90.5 / 84.5
text_json_transform_medium	17.4 / 14.8	18.4 / 15.5	15.7 / 14.3	12.1 / 11.4
text_json_lines_medium	18.2 / 17.8	19.4 / 19.1	23.4 / 22.6	18.9 / 18.2
perf_json_dumps	14.0 / 12.4	14.8 / 13.1	17.2 / 15.2	21.8 / 16.1
game_meteor_contest	449 / 447	480 / 480	122 / 119	113 / 98.2
memory_string_index_short	153 / 141	148 / 134	107 / 97.2	90.3 / 93.7
memory_string_index_long	202 / 183	206 / 184	116 / 108	103 / 105
text_json_lines_small	0.90 / 0.66	0.96 / 0.69	0.74 / 0.73	0.94 / 0.78
text_line_logs_small	0.51 / 0.48	0.53 / 0.50	0.52 / 0.50	0.82 / 0.64
game_pidigits	n/a	n/a	201 / 200	201 / 191
text_csv_cleanup_medium	1080 / 1060	1140 / 1120	218 / 213	240 / 215
text_json_transform_small	0.89 / 0.63	0.94 / 0.62	0.64 / 0.60	0.77 / 0.66
text_json_parse_small	0.75 / 0.49	0.79 / 0.51	0.45 / 0.43	0.62 / 0.52
text_line_logs_medium	19.8 / 19.1	19.4 / 19.0	11.8 / 10.9	17.3 / 15.4
text_regex_logs_medium	32.3 / 30.9	34.3 / 33.0	21.7 / 20.6	43.3 / 29.6
text_regex_logs_small	1.40 / 1.00	1.44 / 1.03	0.84 / 0.67	2.21 / 1.01
ticket_search	30.8 / 29.1	32.5 / 30.9	13.3 / 10.2	20.7 / 19.2
perf_unpack_sequence	148 / 147	101 / 100	22.7 / 20.3	57.7 / 53.4
text_csv_aggregate_small	6.13 / 5.77	6.23 / 5.94	2.26 / 2.23	8.15 / 7.86
text_csv_cleanup_small	11.1 / 10.9	11.6 / 11.3	3.34 / 3.23	14.7 / 14.4

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
perf_barnes_hut	19.9	20.0	20.0	191
game_nbody	19.9	20.0	20.0	78.0
ticket_search	19.9	19.9	20.0	85.0
text_json_lines_medium	24.9	24.8	24.9	238
perf_json_dumps	19.9	19.9	20.0	92.6
expense_report	19.9	20.0	20.0	67.2
text_regex_logs_small	19.9	19.9	20.0	69.4
perf_unpack_sequence	20.0	20.0	20.1	138
portfolio_risk	19.9	20.0	20.0	93.8
text_csv_aggregate_small	20.1	20.0	20.1	73.7
stdout_lines	20.0	19.9	20.0	70.6
text_json_transform_small	20.0	19.9	19.9	69.2
api_report	19.9	19.9	20.0	67.1
text_json_parse_medium	24.3	24.4	24.3	222
text_line_logs_small	20.0	20.0	20.0	69.1
text_json_parse_small	20.0	19.9	20.0	69.1
text_regex_logs_medium	22.2	22.2	22.2	267
game_meteor_contest	20.0	19.9	19.9	186
capacity_planning	20.0	20.0	20.0	71.4
text_csv_cleanup_small	20.1	20.1	20.1	80.2
game_spectral_norm	20.0	20.0	20.0	114
order_cleanup	20.0	19.9	19.9	67.1
game_fannkuch	20.0	20.0	20.0	184
text_json_lines_small	19.9	20.0	19.9	69.1
text_json_transform_medium	24.4	24.4	24.3	228
perf_json_loads	20.0	20.0	19.9	67.1
text_line_logs_medium	24.4	24.4	24.2	242
memory_string_index_long	68.6	68.3	54.0	236
memory_string_index_short	57.0	56.5	42.3	210
text_csv_cleanup_medium	50.4	49.9	33.9	277
text_csv_aggregate_medium	42.7	42.2	28.1	269
memory_string_list_long	113	113	69.8	234
memory_string_list_short	90.3	89.9	46.5	232
perf_float	57.9	58.1	29.3	93.6
memory_customer_records	157	157	68.2	258
game_pidigits	n/a	n/a	20.0	185
game_regex_dna	failed	failed	20.0	218