mumrah edited a comment on pull request #9008: URL: https://github.com/apache/kafka/pull/9008#issuecomment-665795947
I ran the consumer perf test (at @hachikuji's suggestion) and took a profile. Throughput was around 500MB/s on trunk and on this branch  Zoomed in a bit on the records part:  This was with only a handful of partitions on a single broker (on my laptop), but it confirms that the new FetchResponse serialization is hitting the same sendfile path as the previous code. ---------------------------------------------------------------- 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: us...@infra.apache.org