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Perf/packed api - #21

Merged
jcfangc merged 9 commits into
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perf/packed-api
Sep 14, 2026
Merged

Perf/packed api#21
jcfangc merged 9 commits into
mainfrom
perf/packed-api

Cover unaligned packed views

3a73633
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CodSpeed / CodSpeed Performance Analysis failed Sep 14, 2026 in 0s

1 benchmark regressed

⚠️ Different runtime environments detected

Some benchmarks with significant performance changes were compared across different runtime environments,
which may affect the accuracy of the results.

Open the report in CodSpeed to investigate

⚡ 13 improved benchmarks
❌ 1 regressed benchmark
✅ 213 untouched benchmarks
🆕 516 new benchmarks
⏩ 210 skipped benchmarks1

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Benchmark BASE HEAD Efficiency
❌ cmp/len_64/identical/ours_string 499.7 ns 558.1 ns -10.45%
⚡ count_ones/len_4096/all_zeros/leading/ours_string 180.6 ns 151.4 ns +19.27%
⚡ count_ones/len_65/all_zeros/leading/ours_string 180.6 ns 151.4 ns +19.27%
⚡ count_zeros/len_65/dense/leading/ours_str 183.9 ns 154.7 ns +18.85%
⚡ count_zeros/len_65/dense/trailing/ours_str 250.3 ns 221.1 ns +13.19%
⚡ count_zeros/len_65/alternating/trailing/ours_str 251.4 ns 222.2 ns +13.13%
⚡ count_ones/len_4096/all_zeros/leading/ours_str 271.7 ns 242.5 ns +12.03%
⚡ count_ones/len_65/all_zeros/leading/ours_str 271.7 ns 242.5 ns +12.03%
⚡ count_ones/len_65/all_zeros/trailing/ours_str 276.4 ns 247.2 ns +11.8%
⚡ count_ones/len_65/dense/trailing/ours_str 277.8 ns 248.6 ns +11.73%
⚡ count_ones/len_65/alternating/ours_string 278.6 ns 249.4 ns +11.69%
⚡ count_ones/len_65/dense/ours_string 278.6 ns 249.4 ns +11.69%
⚡ count_ones/len_65/sparse/ours_string 278.6 ns 249.4 ns +11.69%
⚡ count_zeros/len_65/all_zeros/trailing/ours_str 279.7 ns 250.6 ns +11.64%
🆕 packed_access/get_random_stream/bits_1_len_1048576/ours_packed_str_unaligned N/A 17.9 ms N/A
🆕 packed_access/get_random_stream/bits_1_len_1048576/ours_packed_string N/A 14.2 ms N/A
🆕 packed_access/get_sequential/bits_1_len_1048576/ours_packed_str_unaligned N/A 11.4 ms N/A
🆕 packed_access/get_sequential/bits_1_len_1048576/ours_packed_string N/A 9.1 ms N/A
🆕 packed_access/get_random_stream/bits_1_len_64/ours_packed_str_unaligned N/A 1.4 µs N/A
🆕 packed_access/get_random_stream/bits_1_len_64/ours_packed_string N/A 994.7 ns N/A
... ... ... ... ...

ℹ️ Only the first 20 benchmarks are displayed. Go to the app to view all benchmarks.

Tip

Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.

Comparing perf/packed-api (3a73633) with main (4e3b6b7)

Open in CodSpeed

Footnotes

  1. 210 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

View more details on CodSpeed