Hi List, I use rsync with the --link-dir feature for hard-linked snapshot-like backups. If there are large files involved, this will blow away the file-system cache. The result is a bad performance hit for applications that had all their files happily in cache before.
Using posix_fadvise and mincore, I wrote a patch that enables rsync to operate without disturbing the file-system-cache. http://insights.oetiker.ch/linux/fadvise.html (This is an update to an earlier version of the patch, that did not use mincore and thus dropped files from cache that had been there BEFORE rsync ran) cheers tobi -- Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten http://it.oetiker.ch [EMAIL PROTECTED] ++41 62 213 9902 -- To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html
