cyb70289 opened a new pull request #7285: URL: https://github.com/apache/arrow/pull/7285
Unaligned bitmap comparision are currently processed bit-by-bit. Comparing word-by-word in uint64 improves performance significantly. Bechmark(comparing two identical bitmaps with 64K bits) jumps from 86M/s to 5.7G/s on my test machine. NOTE: This patch may hurt performance if two bitmaps differ at the very begining bits, as it always loads and compares 64 bits if possible. Bit by bit comparison will notice the difference and return false earlier. This should not be a problem in practice. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
