document: wrap parsed data in storage ref

[dduan]

Reduce retain traffic when copying TOMLDocument.

[github-actions]

Comparing results between 'main' and 'pull_request'

Host 'runnervmh13bl' with 4 'x86_64' processors with 15 GB memory, running:
#18~24.04.1-Ubuntu SMP Sat Jun 28 04:46:03 UTC 2025

TOMLDecoderBenchmarks

Decode toml.io example metrics

Time (wall clock): results within specified thresholds, fold down for details.

Time (wall clock) (μs) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	68	69	69	70	74	87	134	7107
pull_request	64	64	65	65	69	84	130	7390
Δ	-4	-5	-4	-5	-5	-3	-4	283
Improvement %	6	7	6	7	7	3	3	283

Retains: results within specified thresholds, fold down for details.

Retains *	p0	p25	p50	p75	p90	p99	p100	Samples
main	622	622	622	622	622	622	622	7107
pull_request	438	438	438	438	438	438	438	7390
Δ	-184	-184	-184	-184	-184	-184	-184	283
Improvement %	30	30	30	30	30	30	30	283

Parse toml.io example metrics

Time (wall clock): results within specified thresholds, fold down for details.

Time (wall clock) (ns) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	5961	6083	6123	6163	6231	9295	30408	10000
pull_request	6111	6231	6275	6323	6415	10415	30247	10000
Δ	150	148	152	160	184	1120	-161	0
Improvement %	-3	-2	-2	-3	-3	-12	1	0

Retains: results within specified thresholds, fold down for details.

Retains *	p0	p25	p50	p75	p90	p99	p100	Samples
main	5	6	6	6	6	6	6	10000
pull_request	5	6	6	6	6	6	6	10000
Δ	0	0	0	0	0	0	0	0
Improvement %	0	0	0	0	0	0	0	0

decode canada.toml metrics

Time (wall clock): results within specified thresholds, fold down for details.

Time (wall clock) (ms) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	262	262	264	264	265	265	265	4
pull_request	253	253	254	254	255	255	255	4
Δ	-9	-9	-10	-10	-10	-10	-10	0
Improvement %	3	3	4	4	4	4	4	0

Retains: results within specified thresholds, fold down for details.

Retains (K) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	1674	1674	1674	1674	1674	1674	1674	4
pull_request	1226	1226	1226	1226	1226	1226	1226	4
Δ	-448	-448	-448	-448	-448	-448	-448	0
Improvement %	27	27	27	27	27	27	27	0

decode twitter.toml metrics

Time (wall clock): results within specified thresholds, fold down for details.

Time (wall clock) (μs) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	8937	8987	9003	9036	9069	9347	9495	110
pull_request	8288	8405	8413	8438	8495	8684	8887	118
Δ	-649	-582	-590	-598	-574	-663	-608	8
Improvement %	7	6	7	7	6	7	6	8

Retains: results within specified thresholds, fold down for details.

Retains (K) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	66	66	66	66	66	66	66	110
pull_request	45	45	45	45	45	45	45	118
Δ	-21	-21	-21	-21	-21	-21	-21	8
Improvement %	32	32	32	32	32	32	32	8

parse GitHub events archive metrics

Time (wall clock): results within specified thresholds, fold down for details.

Time (wall clock) (ms) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	165	165	166	166	179	179	179	6
pull_request	166	166	166	173	178	178	178	6
Δ	1	1	0	7	-1	-1	-1	0
Improvement %	-1	-1	0	-4	1	1	1	0

Retains: results within specified thresholds, fold down for details.

Retains (K) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	77	77	77	77	77	77	77	6
pull_request	77	77	77	77	77	77	77	6
Δ	0	0	0	0	0	0	0	0
Improvement %	0	0	0	0	0	0	0	0

parse canada.toml metrics

Time (wall clock): results within specified thresholds, fold down for details.

Time (wall clock) (ms) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	16	17	17	18	18	19	19	58
pull_request	18	18	19	19	19	20	20	54
Δ	2	1	2	1	1	1	1	-4
Improvement %	-12	-6	-12	-6	-6	-5	-5	-4

Retains: results within specified thresholds, fold down for details.

Retains *	p0	p25	p50	p75	p90	p99	p100	Samples
main	129	130	130	130	130	130	130	58
pull_request	129	130	130	130	130	130	130	54
Δ	0	0	0	0	0	0	0	-4
Improvement %	0	0	0	0	0	0	0	-4

parse twitter.toml metrics

Time (wall clock): results within specified thresholds, fold down for details.

Time (wall clock) (μs) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	2735	2771	2777	2789	2943	4041	5116	346
pull_request	2760	2779	2787	2796	2810	2898	3354	352
Δ	25	8	10	7	-133	-1143	-1762	6
Improvement %	-1	0	0	0	5	28	34	6

Retains: results within specified thresholds, fold down for details.

Retains *	p0	p25	p50	p75	p90	p99	p100	Samples
main	1289	1290	1290	1290	1290	1290	1290	346
pull_request	1289	1290	1290	1290	1290	1290	1290	352
Δ	0	0	0	0	0	0	0	6
Improvement %	0	0	0	0	0	0	0	6