Hi, I use rsync for hardlink-backup ... since I run this quite frequently, linux happily fills its cache with stuff that should not realy go there .... I have set /proc/sys/vm/swappiness to 0 which helps, but since this acts across board it is not ideal. Better would be to use posix_fadvise to POSIX_FADV_DONTNEED drop the cache while reading and writing to disk ... I did not find anything in the archive on this ... has anyone attempted to implement this ? cheers tobi -- Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten http://tobi.oetiker.ch tobi@oetiker.ch ++41 62 213 9902