Avatar for the rstackjs user
rstackjs
rspack-sources
BlogDocsChangelog

perf: optimize to_json by pre-allocating buffer capacity

#226Merged
Comparing
perf-json-size-hint
(
11b5614
) with
main
(
022a860
)
CodSpeed Performance Gauge
+41%
Improvement
1
Untouched
10
Skipped
7

Benchmarks

18 total
source_map_to_json
benches/bench.rs::rspack_sources::bench_rspack_sources::rspack_sources
CodSpeed Performance Gauge
+41%
16.3 ms11.5 ms
concat_generate_string_with_cache
benches/bench.rs::rspack_sources::bench_rspack_sources::rspack_sources
CodSpeed Performance Gauge
+6%
13.7 µs13 µs
complex_replace_source_source
benches/bench.rs::rspack_sources::bench_rspack_sources::rspack_sources
CodSpeed Performance Gauge
0%
2.7 ms2.7 ms
cached_source_hash
benches/bench.rs::rspack_sources::bench_rspack_sources::rspack_sources
CodSpeed Performance Gauge
0%
3 µs3 µs
complex_replace_source_size
benches/bench.rs::rspack_sources::bench_rspack_sources::rspack_sources
CodSpeed Performance Gauge
0%
221.3 µs221.3 µs
complex_replace_source_map
benches/bench.rs::rspack_sources::bench_rspack_sources::rspack_sources
CodSpeed Performance Gauge
0%
9.4 ms9.4 ms
complex_replace_source_map_cached_source_stream_chunks
benches/bench.rs::rspack_sources::bench_rspack_sources::rspack_sources
CodSpeed Performance Gauge
0%
6.6 ms6.6 ms
parse_source_map_from_json
benches/bench.rs::rspack_sources::bench_rspack_sources::rspack_sources
CodSpeed Performance Gauge
0%
48 ms48 ms
repetitive_react_components_source
benches/bench.rs::rspack_sources::bench_rspack_sources::rspack_sources
CodSpeed Performance Gauge
0%
251.9 µs252.3 µs
repetitive_react_components_map
benches/bench.rs::rspack_sources::bench_rspack_sources::rspack_sources
CodSpeed Performance Gauge
-1%
1.8 ms1.8 ms
concat_generate_string
benches/bench.rs::rspack_sources::bench_rspack_sources::rspack_sources
CodSpeed Performance Gauge
-2%
42.6 µs43.7 µs
concat_generate_base64_with_cache
benches/bench.rs::rspack_sources::bench_rspack_sources::rspack_sources
Skipped
17.3 µs*
concat_generate_base64
benches/bench.rs::rspack_sources::bench_rspack_sources::rspack_sources
Skipped
48 µs*
concat_generate_string_with_cache_as_key
benches/bench.rs::rspack_sources::bench_rspack_sources::rspack_sources
Skipped
3 µs*
concat_generate_string_as_key
benches/bench.rs::rspack_sources::bench_rspack_sources::rspack_sources
Skipped
14.7 µs*
complex_replace_source
benches/bench.rs::rspack_sources::bench_rspack_sources::rspack_sources
Skipped
55.4 ms*
stringify_source_map_to_json
benches/bench.rs::rspack_sources::bench_rspack_sources::rspack_sources
Skipped
14.7 ms*
source_map_clone
benches/bench.rs::rspack_sources::bench_rspack_sources::rspack_sources
Skipped
1.1 µs*

Commits

Click on a commit to change the comparison range
Base
main
022a860
+41.31%
perf: optimize to_json by pre-allocating buffer capacity
0f25804
4 days ago
by SyMind
0%
update comments
11b5614
4 days ago
by SyMind
© 2026 CodSpeed Technology
Home Terms Privacy Docs