rmuir commented on PR #13381: URL: https://github.com/apache/lucene/pull/13381#issuecomment-2119284297
somewhat related: i was playing around with the new `cachestat` syscall (it isn't relevant to us here directly, takes `fd`, etc), but the background did bring up the opposite concern of this PR: > such an application can learn whether the pages it is prefetching into the cache are still there by the time it gets around to using them. If those pages are being evicted, the prefetching is overloading the page cache and causing more work overall; in such situations, the application can back off and get better performance. https://lwn.net/Articles/917096/ You can play around with it easily on linux 6.x from the commandline: ```console $ fincore --output-all myindexdir/* ``` -- 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
