gsmiller commented on issue #12317: URL: https://github.com/apache/lucene/issues/12317#issuecomment-1556202535
I'm no expert in this area of our codec, but I'm curious to understand the issue a bit better. From the flame chart you provide, it looks like you're primarily looking at an indexing-related performance issue. Is that correct? When you disabled the patch, did you notice query-time performance changes? Compression isn't only useful for saving disk space; it's useful for keeping index pages hot in the OS cache and getting better data locality, which translates to better query-time performance. If your customer is running a 16gb heap on a machine with 32gb of memory, I wonder if they're benefitting much from the page cache? Is the heap squeezing out available memory for the page cache? -- 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] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
