benwtrent commented on PR #11860: URL: https://github.com/apache/lucene/pull/11860#issuecomment-1320660919
OK, I did some more performance testing @jpountz @rmuir Every once in a while, I see some extreme 100%/99.9% latency spikes in KNN search times. This happened on about half of the runs I did locally. It seems like spikes like this are typical in the 99.9%, but these are way more extreme: ``` 100th percentile service time | knn-search-10-100 | 7.02746 | 215.784 | 208.757 | ms | +2970.58% | ``` Additionally, flush has indeed been effected. I tested more thoroughly with a larger data set: ``` refresh-after-index | 23.5835 | 37.4973 | 13.9138 | ms | +59.00% | ``` I typically see an increase of 10-20ms increase over the baseline. All the numbers: https://gist.github.com/benwtrent/cc9718bf8cb6d353cee37964472f98df -- 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: issues-unsubscr...@lucene.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For additional commands, e-mail: issues-h...@lucene.apache.org
