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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2020/08/12 16:49:29 UTC

[GitHub] [arrow] pitrou edited a comment on pull request #7940: ARROW-9702: [C++] Move bpacking SIMD to runtime path.

pitrou edited a comment on pull request #7940:
URL: https://github.com/apache/arrow/pull/7940#issuecomment-672989561


   Here are some benchmarks on an AMD Ryzen CPU (AVX2-enabled):
   * before:
   ```
   BM_PlainDecodingBoolean/1024         344 ns          344 ns      2030607 bytes_per_second=2.77389G/s
   BM_PlainDecodingBoolean/4096        1084 ns         1084 ns       640969 bytes_per_second=3.52035G/s
   BM_PlainDecodingBoolean/32768       7896 ns         7895 ns        88481 bytes_per_second=3.86522G/s
   BM_PlainDecodingBoolean/65536      15708 ns        15706 ns        44567 bytes_per_second=3.88619G/s
   ```
   * after:
   ```
   BM_PlainDecodingBoolean/1024         270 ns          270 ns      2577129 bytes_per_second=3.53353G/s
   BM_PlainDecodingBoolean/4096         743 ns          743 ns       944192 bytes_per_second=5.13327G/s
   BM_PlainDecodingBoolean/32768       5062 ns         5061 ns       138290 bytes_per_second=6.02987G/s
   BM_PlainDecodingBoolean/65536       9968 ns         9967 ns        70110 bytes_per_second=6.12384G/s
   ```


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