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: 10
Parallel jobs: 1
Run duration: 17m 39s

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 · 4246aa75724b133e55f8a82e2cf5dfc0120e62e8
/home/runner/work/flying-circus/flying-circus/_runtimes/monty-main/bin/monty
Source build: https://github.com/pydantic/monty@4246aa75724b133e55f8a82e2cf5dfc0120e62e8; cargo build --locked --release -p monty-runtime --bin monty; rustc 1.99.0 (b940084d7 2026-09-28)
9da5ff413932bbee02d63323c0c84804da457b4aa2a68e83ffd0a5204a8c7479

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
1.71	1.63	12.9	24.3

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	761 / 760	549 / 549	140 / 136	19.1 / 19.0
portfolio_risk	146 / 145	110 / 109	87.1 / 85.0	12.3 / 13.6
game_spectral_norm	695 / 696	510 / 508	142 / 136	22.2 / 21.8
game_fannkuch	n/a	2220 / 2220	460 / 457	87.1 / 91.1
expense_report	0.38 / 0.35	0.46 / 0.38	1.74 / 0.53	0.42 / 0.56
perf_float	382 / 343	475 / 417	94.5 / 88.6	24.0 / 20.1
capacity_planning	77.6 / 75.4	62.2 / 60.2	18.1 / 16.1	4.31 / 4.63
order_cleanup	0.45 / 0.36	0.53 / 0.41	1.80 / 0.64	0.50 / 0.61
api_report	0.80 / 0.44	0.88 / 0.45	1.77 / 0.64	0.47 / 0.62
perf_json_loads	1.58 / 1.15	1.80 / 1.33	3.38 / 2.05	1.23 / 1.34
game_regex_dna	n/a	failed / failed	341 / 330	215 / 154
perf_barnes_hut	7000 / 6930	6950 / 6930	1260 / 1230	706 / 577
stdout_lines	3.60 / 3.78	4.04 / 4.19	6.87 / 4.68	6.44 / 4.67
memory_string_list_short	329 / 291	313 / 269	160 / 147	84.7 / 101
memory_customer_records	600 / 549	565 / 460	258 / 258	199 / 146
text_csv_aggregate_medium	579 / 558	661 / 639	136 / 130	94.7 / 78.6
memory_string_index_short	149 / 125	147 / 126	106 / 94.6	102 / 64.7
text_json_parse_medium	14.8 / 10.7	16.5 / 12.3	15.4 / 13.5	10.5 / 9.73
perf_json_dumps	14.1 / 11.5	16.3 / 13.6	18.8 / 16.7	23.5 / 19.7
memory_string_list_long	443 / 410	427 / 361	171 / 157	119 / 150
text_json_lines_medium	21.0 / 20.2	22.1 / 21.4	26.6 / 25.4	18.6 / 19.2
text_json_lines_small	0.92 / 0.60	0.99 / 0.68	0.78 / 0.83	0.73 / 0.76
game_meteor_contest	n/a	failed / failed	121 / 118	90.1 / 86.5
text_csv_cleanup_medium	1130 / 1110	1300 / 1280	260 / 253	193 / 189
text_json_transform_small	0.86 / 0.54	0.93 / 0.57	0.68 / 0.67	0.53 / 0.66
text_json_parse_small	0.75 / 0.44	0.80 / 0.48	0.47 / 0.49	0.38 / 0.53
game_pidigits	n/a	n/a	205 / 204	176 / 178
text_line_logs_small	0.57 / 0.53	0.56 / 0.58	0.55 / 0.59	0.61 / 0.70
text_json_transform_medium	18.0 / 13.6	19.8 / 15.5	16.7 / 14.7	15.8 / 14.7
text_regex_logs_medium	38.3 / 36.8	36.6 / 35.5	25.2 / 23.8	28.2 / 22.5
memory_string_index_long	212 / 176	208 / 176	117 / 106	117 / 100
text_regex_logs_small	1.41 / 0.94	1.47 / 0.98	0.91 / 0.77	2.58 / 0.97
text_line_logs_medium	26.9 / 26.3	24.0 / 23.5	13.5 / 12.2	17.3 / 16.6
ticket_search	41.0 / 39.1	37.1 / 35.4	13.9 / 11.2	20.1 / 19.4
perf_unpack_sequence	332 / 338	103 / 102	25.9 / 23.0	57.8 / 58.3
text_csv_aggregate_small	6.35 / 6.02	7.19 / 6.87	2.50 / 2.42	8.17 / 8.50
text_csv_cleanup_small	11.7 / 11.3	13.4 / 13.0	3.84 / 3.70	14.6 / 15.1

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
text_regex_logs_small	20.0	19.9	20.0	58.1
text_csv_aggregate_small	19.9	20.0	20.0	58.6
text_json_transform_medium	24.2	24.2	24.3	126
ticket_search	19.9	19.9	20.0	60.1
api_report	19.9	19.9	20.0	57.5
order_cleanup	19.9	20.0	20.0	57.4
perf_barnes_hut	19.9	20.0	20.0	88.8
capacity_planning	19.9	20.0	20.0	58.2
text_json_lines_medium	24.7	24.8	24.8	124
perf_unpack_sequence	19.9	20.0	19.9	62.7
text_regex_logs_medium	22.2	22.2	22.2	127
text_line_logs_small	19.9	20.0	20.0	57.9
text_json_transform_small	19.9	20.0	19.9	57.9
game_fannkuch	n/a	19.9	19.9	58.6
stdout_lines	20.0	20.0	20.0	59.4
game_spectral_norm	20.0	19.9	19.9	59.1
perf_json_loads	20.0	20.0	20.0	57.4
portfolio_risk	19.9	20.0	19.9	58.5
text_line_logs_medium	24.4	24.4	24.3	125
text_json_parse_medium	24.3	24.3	24.2	126
perf_json_dumps	20.0	20.0	20.0	60.6
game_nbody	20.0	19.9	19.9	58.7
text_json_parse_small	20.0	20.0	19.9	57.9
expense_report	20.0	20.0	19.9	57.4
text_csv_cleanup_small	20.0	20.0	19.9	59.2
text_json_lines_small	20.0	20.0	19.9	57.8
memory_string_index_long	67.4	67.9	54.0	124
memory_string_index_short	56.0	56.3	42.3	108
text_csv_cleanup_medium	49.7	49.3	33.8	147
text_csv_aggregate_medium	42.3	42.1	28.0	149
memory_string_list_long	112	113	69.8	125
memory_string_list_short	89.3	89.7	46.4	99.5
perf_float	57.6	57.6	29.4	69.9
memory_customer_records	156	157	68.0	134
game_meteor_contest	n/a	failed	20.0	61.0
game_pidigits	n/a	n/a	20.0	64.9
game_regex_dna	n/a	failed	19.9	87.1