adriangb commented on PR #9511: URL: https://github.com/apache/arrow-rs/pull/9511#issuecomment-4057469543
@alamb this is the point: ``` true_count(all_true, 65536) 1.00 228.0±0.13ns ? ?/sec vs has_true(all_true, 65536) 1.00 13.7±0.03ns ? ?/sec ``` and ```` true_count(all_false, 65536) 1.00 227.8±0.19ns ? ?/sec vs has_false(all_false, 65536) 1.00 13.6±0.03ns ? ?/sec ``` By stopping early we get huge wins. At the same time we the worst case is not any slower: ``` true_count(all_true, 65536) 1.00 228.0±0.13ns ? ?/sec vs. has_false(all_true, 65536) 1.00 123.1±0.63ns ? ?/sec ``` (in fact a bit faster because it's a cheaper operation) I had to do some chunked vectorization to be able to achieve both of these goals. -- 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. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
