https://bugzilla.samba.org/show_bug.cgi?id=12498
Bug ID: 12498 Summary: --fuzzy --fuzzy hugely impacts performance even if its' not needed Product: rsync Version: 3.1.2 Hardware: All OS: All Status: NEW Severity: normal Priority: P5 Component: core Assignee: way...@samba.org Reporter: ben.rub...@gmail.com QA Contact: rsync...@samba.org Hello, I make backups to a Rsync daemon. Each backup is made to an empty directory, using 20 --link-dest parameters, so that already uploaded files are hard-linked. Perfect. I made some tests adding --fuzzy --fuzzy so that non-existing files can use a base-file, when possible. It works perfectly, really good thing to find a base-file within link-dest directories. However, it really slows down the backup process, even when it's not needed. For example, it terribly impacts performance even for a backup with no new files at all, for which all files will be hard-linked. Here are some backup durations for a backup with no new files : - without -yy : 9 seconds - with -y : 9 seconds - with --y and 1 --link-dest : 11 seconds - with --y and 8 --link-dest : 22 seconds - with --y and 20 --link-dest : 37 seconds My question is then, could it be possible for --fuzzy --fuzzy (-yy) to only work for files which really need to be uploaded ? So to avoid working for files which will simply be hard-linked. Would such a modification only impact daemon side ? (would be great) Thank you very much ! Best regards, Ben -- You are receiving this mail because: You are the QA Contact for the bug. -- Please use reply-all for most replies to avoid omitting the mailing list. To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html