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
Run duration: 18m 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 CPython · largest improvement first; click headers to reorder

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

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	CPython	PyPy
1.76	12.7	23.9

Runtime · ms · one-shot / repeated

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

Workload	Monty	CPython	PyPy
game_nbody	779 / 780	144 / 142	19.1 / 18.9
portfolio_risk	153 / 153	84.1 / 83.0	12.2 / 13.2
game_spectral_norm	687 / 687	135 / 134	22.3 / 22.0
game_fannkuch	n/a	489 / 480	87.1 / 86.1
capacity_planning	80.3 / 78.3	21.6 / 19.5	4.31 / 4.36
expense_report	0.40 / 0.35	1.88 / 0.54	0.43 / 0.56
order_cleanup	0.48 / 0.39	1.94 / 0.63	0.48 / 0.63
perf_float	383 / 346	94.5 / 89.0	24.1 / 22.0
api_report	0.82 / 0.50	1.91 / 0.63	0.48 / 0.64
perf_json_loads	1.61 / 1.21	3.66 / 2.16	1.25 / 1.39
perf_barnes_hut	6980 / 7020	1260 / 1260	707 / 559
game_regex_dna	n/a	316 / 310	216 / 147
stdout_lines	3.59 / 3.85	6.71 / 4.93	6.47 / 4.87
memory_string_list_short	329 / 287	154 / 149	85.5 / 164
perf_json_dumps	14.0 / 11.5	21.6 / 19.6	23.6 / 17.4
text_csv_aggregate_medium	584 / 568	137 / 129	95.5 / 76.7
perf_gc_traversal	n/a	22.3 / 20.7	13.8 / 1550
text_json_parse_medium	15.0 / 10.8	16.9 / 15.3	10.6 / 11.3
memory_customer_records	599 / 549	257 / 255	201 / 170
text_json_lines_medium	20.5 / 19.8	27.9 / 26.8	18.7 / 18.5
memory_string_index_short	153 / 132	102 / 96.0	104 / 67.2
game_meteor_contest	n/a	123 / 120	90.7 / 85.4
memory_string_list_long	448 / 410	166 / 159	119 / 163
text_csv_cleanup_medium	1140 / 1130	253 / 255	194 / 182
memory_string_index_long	217 / 187	115 / 108	118 / 78.0
text_json_transform_small	0.88 / 0.54	0.70 / 0.73	0.53 / 0.64
text_json_lines_small	0.91 / 0.62	0.80 / 0.82	0.73 / 0.78
text_json_parse_small	0.76 / 0.45	0.49 / 0.52	0.40 / 0.61
text_json_transform_medium	18.1 / 13.9	18.3 / 16.5	15.8 / 15.0
game_pidigits	n/a	197 / 196	176 / 170
text_regex_logs_medium	38.0 / 37.4	24.7 / 23.5	28.3 / 21.9
text_line_logs_small	0.60 / 0.59	0.54 / 0.60	0.62 / 0.67
text_line_logs_medium	27.4 / 27.1	13.6 / 12.2	17.4 / 16.6
text_regex_logs_small	1.44 / 0.96	0.91 / 0.73	2.59 / 1.00
ticket_search	41.4 / 39.7	13.8 / 11.4	20.2 / 19.8
perf_unpack_sequence	335 / 340	27.0 / 23.5	58.0 / 57.4
text_csv_aggregate_small	6.38 / 6.06	2.51 / 2.46	8.23 / 8.33
text_csv_cleanup_small	11.7 / 11.4	3.81 / 3.73	14.7 / 15.0

Peak RSS · MiB · one-shot

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

Workload	Monty	CPython	PyPy
text_json_transform_medium	23.5	23.6	126
perf_barnes_hut	19.3	19.4	88.6
expense_report	19.3	19.3	57.4
text_regex_logs_small	19.3	19.4	58.2
text_line_logs_small	19.3	19.4	57.9
portfolio_risk	19.3	19.3	58.4
ticket_search	19.3	19.3	60.2
text_json_transform_small	19.4	19.4	57.9
text_json_parse_small	19.4	19.4	57.9
text_csv_cleanup_small	19.4	19.4	59.2
text_json_lines_medium	23.5	23.5	124
text_json_lines_small	19.4	19.4	57.9
game_spectral_norm	19.3	19.3	59.1
order_cleanup	19.2	19.2	57.5
text_csv_aggregate_small	19.4	19.4	58.6
text_json_parse_medium	23.6	23.5	126
capacity_planning	19.3	19.2	58.1
text_line_logs_medium	23.6	23.6	125
perf_json_dumps	19.2	19.2	60.6
text_regex_logs_medium	21.5	21.4	127
perf_json_loads	19.2	19.2	57.3
game_nbody	19.3	19.2	58.8
api_report	19.3	19.2	57.5
perf_unpack_sequence	19.4	19.3	62.8
stdout_lines	19.3	19.2	59.4
memory_string_index_long	67.5	53.3	124
memory_string_index_short	55.9	41.6	108
text_csv_cleanup_medium	49.7	33.1	147
text_csv_aggregate_medium	42.1	27.4	149
memory_string_list_long	112	69.0	125
memory_string_list_short	89.8	45.8	99.5
memory_customer_records	157	67.3	134
perf_float	57.7	28.4	69.9
game_fannkuch	n/a	19.2	58.7
game_meteor_contest	n/a	19.2	61.0
game_pidigits	n/a	19.3	64.9
perf_gc_traversal	n/a	19.3	66.1
game_regex_dna	n/a	19.3	87.1