gianm commented on pull request #10287: URL: https://github.com/apache/druid/pull/10287#issuecomment-756630739
> circling back on this. my cluster with 161k segments takes ~20ms to execute `LogUsedSegments`. This duty should scale fairly linearly with number of segments so you'd have to 50x that number of segments to hit 1 second if that is true. I really look forward to when I can deploy #10603 in my larger production environment to confirm. I should be able to do this in mid-Jan. You could also use `sjk` to grab a flame graph of a couple of coordinator run cycles (maybe let the tool run for 5 minutes). It would be illuminating as to exactly where the time is going. Some instructions here: https://support.imply.io/hc/en-us/articles/360033747953-Profiling-Druid-queries-using-flame-graphs (That's written with profiling queries in mind, but the technique would work just as well for profiling anything.) ---------------------------------------------------------------- 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] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
