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
Run duration: 11m 19s

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
1.46	8.56	16.4

Runtime · ms · one-shot / repeated

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

Workload	Monty	CPython	PyPy
portfolio_risk	95.9 / 101	45.9 / 47.2	7.19 / 8.52
game_nbody	445 / 460	67.4 / 69.8	11.0 / 11.8
game_spectral_norm	359 / 372	68.6 / 69.8	13.1 / 14.5
game_fannkuch	n/a	242 / 269	52.4 / 55.2
expense_report	0.33 / 0.27	1.11 / 0.38	0.26 / 0.43
capacity_planning	41.2 / 41.8	10.5 / 9.57	2.64 / 3.05
api_report	0.65 / 0.38	1.16 / 0.48	0.30 / 0.55
perf_float	234 / 211	53.1 / 52.4	14.2 / 15.1
order_cleanup	0.41 / 0.33	1.17 / 0.49	0.31 / 0.53
perf_json_loads	1.18 / 0.90	2.10 / 1.39	0.72 / 1.04
perf_barnes_hut	4050 / 4220	622 / 635	388 / 315
game_regex_dna	n/a	181 / 182	131 / 99.2
stdout_lines	2.09 / 2.04	3.64 / 2.57	3.76 / 3.24
memory_string_list_short	198 / 186	83.5 / 81.6	52.5 / 71.5
perf_json_dumps	8.64 / 7.18	11.7 / 11.1	12.9 / 10.6
perf_gc_traversal	n/a	13.6 / 14.7	9.04 / 1190
memory_string_index_short	99.1 / 91.6	61.3 / 62.5	68.1 / 41.7
memory_customer_records	455 / 420	144 / 154	135 / 103
game_pidigits	n/a	142 / 148	98.2 / 103
text_json_parse_medium	10.0 / 7.63	9.46 / 9.67	6.61 / 7.32
text_csv_aggregate_medium	384 / 382	71.3 / 72.0	60.5 / 51.2
memory_string_index_long	135 / 120	70.7 / 71.6	77.1 / 50.9
text_json_lines_medium	12.1 / 12.3	15.2 / 15.3	11.3 / 11.9
text_json_parse_small	0.55 / 0.30	0.29 / 0.36	0.21 / 0.37
text_json_lines_small	0.67 / 0.42	0.48 / 0.55	0.43 / 0.55
text_json_transform_small	0.66 / 0.39	0.43 / 0.51	0.33 / 0.47
game_meteor_contest	n/a	69.5 / 70.5	53.5 / 54.1
text_csv_cleanup_medium	770 / 784	137 / 142	115 / 115
memory_string_list_long	262 / 234	92.0 / 88.9	75.1 / 78.8
text_json_transform_medium	12.3 / 10.2	10.2 / 10.6	9.60 / 10.2
text_line_logs_small	0.42 / 0.39	0.32 / 0.38	0.35 / 0.44
text_regex_logs_medium	23.8 / 23.3	12.8 / 12.5	16.1 / 14.4
text_regex_logs_small	1.05 / 0.70	0.53 / 0.49	1.53 / 0.68
text_line_logs_medium	17.1 / 17.7	7.30 / 6.66	10.7 / 10.9
ticket_search	23.5 / 24.5	7.90 / 7.52	12.2 / 13.3
perf_unpack_sequence	217 / 224	13.6 / 12.7	31.1 / 33.8
text_csv_aggregate_small	3.97 / 3.92	1.42 / 1.51	4.69 / 5.36
text_csv_cleanup_small	7.29 / 7.40	2.08 / 2.20	8.30 / 9.78

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
perf_json_dumps	19.4	19.5	60.6
text_csv_aggregate_small	19.4	19.4	58.6
text_json_parse_medium	23.6	23.7	126
capacity_planning	19.4	19.5	58.2
game_spectral_norm	19.4	19.5	59.2
ticket_search	19.4	19.4	60.3
text_csv_cleanup_small	19.4	19.4	59.2
text_json_transform_medium	23.7	23.8	126
text_json_lines_small	19.4	19.4	58.0
perf_unpack_sequence	19.5	19.5	62.7
perf_json_loads	19.5	19.5	57.5
stdout_lines	19.5	19.5	59.5
game_nbody	19.5	19.5	58.8
api_report	19.5	19.5	57.5
order_cleanup	19.4	19.4	57.4
text_line_logs_medium	23.6	23.6	125
text_json_parse_small	19.4	19.4	57.9
text_line_logs_small	19.4	19.4	57.9
text_json_lines_medium	24.2	24.1	124
perf_barnes_hut	19.4	19.4	88.9
expense_report	19.5	19.4	57.5
text_regex_logs_medium	21.6	21.5	127
text_regex_logs_small	19.5	19.4	58.2
portfolio_risk	19.4	19.3	58.5
text_json_transform_small	19.5	19.3	57.9
memory_string_index_long	67.5	53.3	124
memory_string_index_short	56.0	41.7	108
text_csv_cleanup_medium	49.9	33.1	147
text_csv_aggregate_medium	42.2	27.4	149
memory_string_list_long	112	69.2	125
memory_string_list_short	89.5	45.9	99.6
memory_customer_records	156	67.4	134
perf_float	57.8	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	19.5	65.0
perf_gc_traversal	n/a	19.5	66.1
game_regex_dna	n/a	19.4	87.0