Path: csiph.com!news.mixmin.net!news.unit0.net!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: Jolly Roger Newsgroups: comp.sys.mac.system,comp.sys.mac.hardware.storage Subject: Re: Sierra's Time Machine's backups slower? Date: 27 Apr 2017 18:31:20 GMT Organization: People for the Ethical Treatment of Pirates Lines: 46 Message-ID: References: <1n53swa.ty5yhv1uib5rwN%dempson@actrix.gen.nz> <1n53w4s.a8tohs1unrh8xN%nj_kruse@me.com> <5902365e$0$8033$b1db1813$2411a48f@news.astraweb.com> X-Trace: individual.net C4kHmWhD5U7OGqv9WFpViAlyb/8gt7yJt4CHKylusc3sPiX5OM Cancel-Lock: sha1:KhSqcaz0fR5AVvWAhPpem8/k3OM= Mail-Copies-To: nobody User-Agent: slrn/1.0.1 (Darwin) Xref: csiph.com comp.sys.mac.system:105652 comp.sys.mac.hardware.storage:1547 On 2017-04-27, JF Mezei wrote: > On 2017-04-27 07:49, Andre G. Isaak wrote: > >> Deleting a time-machine backup is considerably slower than deleting a >> comparably sized group of files, and I assume the reason for this is >> that the OS performs consistency checks when deleting multiply-linked >> folders. > > I view it differently: Your view is based on ignorance and is therefore irrelevant. > Say File1.txt has remained unchanged for 6 months or 180 days/backups. > So you have one copy of file1.txt with 180 directory entries pointing to it. Nope. > Deletting the January 1 backup won't free up space used by File1.txt, it > merely decrements the "number of entries" counter for the file to 179. Nope. That's not how it works. > You then have to go and delete the Jan 2 backup etc etc. Nope. That's not how it works either. > So you have to loop through al backups (oldest to newest) deleting all > files in each until you have enough free space. Since vast majority of > file entries in a daily backup have a "count" higher than 1, deleting > them won't cause freeing of disk space, so you have to delete a whole > lot of file entries just to free up a certain amount of disk space. > > So it may end up deleteing say 10,000 file entries without freeing any > disk space because those files are also used in the next day's backup. LOL! Wow... You're just pulling this straight out of your ass... [remainder of clueless ramblings rightfully ignored] You should really stick to talking about what you actually know. -- E-mail sent to this address may be devoured by my ravenous SPAM filter. I often ignore posts from Google. Use a real news client instead. JR