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 44s

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
1.82	12.8	23.8

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	776 / 775	143 / 143	19.4 / 19.1
portfolio_risk	150 / 151	84.4 / 82.6	12.8 / 13.5
game_spectral_norm	694 / 698	136 / 134	22.6 / 22.2
game_fannkuch	n/a	491 / 485	87.1 / 86.1
capacity_planning	77.5 / 75.4	21.7 / 19.6	4.45 / 4.40
expense_report	0.39 / 0.34	1.90 / 0.58	0.45 / 0.57
perf_float	387 / 347	95.5 / 88.3	24.8 / 21.1
order_cleanup	0.48 / 0.42	1.94 / 0.61	0.53 / 0.63
api_report	0.83 / 0.46	1.96 / 0.62	0.52 / 0.62
perf_json_loads	1.65 / 1.21	3.74 / 2.19	1.30 / 1.39
game_regex_dna	n/a	320 / 310	219 / 148
perf_barnes_hut	7010 / 7040	1260 / 1250	716 / 634
memory_string_list_short	332 / 297	154 / 142	85.4 / 131
text_csv_aggregate_medium	595 / 572	137 / 131	97.6 / 75.8
perf_json_dumps	14.3 / 11.6	21.7 / 19.5	24.2 / 18.3
text_json_parse_medium	15.1 / 11.0	17.2 / 15.1	10.7 / 11.0
perf_gc_traversal	n/a	22.6 / 19.2	14.3 / 2050
memory_customer_records	616 / 523	257 / 247	203 / 164
text_json_lines_medium	21.0 / 20.6	28.1 / 26.5	18.9 / 18.7
memory_string_list_long	450 / 395	165 / 153	119 / 170
text_csv_cleanup_medium	1160 / 1140	262 / 256	197 / 187
game_meteor_contest	n/a	123 / 120	91.7 / 87.8
text_json_transform_small	0.88 / 0.54	0.72 / 0.74	0.56 / 0.64
text_json_lines_small	0.95 / 0.65	0.81 / 0.85	0.76 / 0.79
memory_string_index_short	159 / 135	109 / 95.4	108 / 72.8
memory_string_index_long	227 / 190	125 / 106	127 / 84.2
text_json_parse_small	0.78 / 0.47	0.49 / 0.53	0.41 / 0.57
text_json_transform_medium	18.4 / 14.1	18.6 / 16.6	15.9 / 14.5
game_pidigits	n/a	197 / 196	178 / 179
text_regex_logs_medium	39.0 / 37.9	24.9 / 23.8	28.6 / 22.4
text_line_logs_small	0.58 / 0.57	0.54 / 0.58	0.63 / 0.69
text_line_logs_medium	27.6 / 27.2	13.8 / 12.2	17.5 / 16.6
text_regex_logs_small	1.45 / 0.97	0.92 / 0.76	2.62 / 1.01
ticket_search	41.7 / 39.4	14.2 / 11.7	20.8 / 19.8
perf_unpack_sequence	333 / 338	27.8 / 23.6	58.2 / 57.5
text_csv_aggregate_small	6.40 / 6.09	2.55 / 2.50	8.34 / 8.27
text_csv_cleanup_small	11.8 / 11.4	3.82 / 3.76	14.9 / 15.3

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_small	19.3	19.4	57.9
text_json_lines_medium	23.9	24.0	124
order_cleanup	19.4	19.4	57.5
expense_report	19.3	19.4	57.5
capacity_planning	19.3	19.3	58.1
ticket_search	19.3	19.3	60.2
perf_barnes_hut	19.4	19.4	88.9
api_report	19.4	19.4	57.5
text_line_logs_medium	23.5	23.5	125
perf_json_dumps	19.4	19.4	60.6
perf_unpack_sequence	19.3	19.3	62.7
text_json_parse_medium	23.7	23.7	126
perf_json_loads	19.4	19.4	57.5
text_csv_cleanup_small	19.4	19.4	59.2
portfolio_risk	19.3	19.3	58.5
text_regex_logs_medium	21.4	21.4	127
text_line_logs_small	19.4	19.4	57.9
text_csv_aggregate_small	19.4	19.3	58.6
game_spectral_norm	19.4	19.3	59.1
text_json_transform_medium	23.6	23.6	126
text_regex_logs_small	19.4	19.4	58.1
game_nbody	19.4	19.3	58.8
text_json_parse_small	19.4	19.3	57.9
text_json_lines_small	19.4	19.3	57.9
memory_string_index_long	67.4	53.3	124
memory_string_index_short	56.3	41.6	108
text_csv_cleanup_medium	49.7	33.1	147
text_csv_aggregate_medium	41.8	27.4	149
memory_string_list_long	113	69.0	125
memory_string_list_short	89.8	45.8	99.5
memory_customer_records	157	67.3	134
perf_float	57.6	28.4	69.9
game_fannkuch	n/a	19.4	58.7
game_meteor_contest	n/a	19.4	60.9
game_pidigits	n/a	19.3	64.9
perf_gc_traversal	n/a	19.3	66.1
game_regex_dna	n/a	19.3	87.2