Thanks for the replies, Kenneth and Les. Kenneth, do you find that SMB is faster than rsync for backing up Windows boxes?
Les, that' not good news if 2-3 hour incremental backups and 7 hour full backups are par for the course. Is the slowdown due to the network-transfer time, or is some kind of checksum being run on every single one of the 21,000+ files, even during an incremental backup? If so, why isn't the "--checksum-seed=32761" option making any difference? Thanks. It'd be nice if I could setup some blackout times for this Windows PC, but unfortunately it gets turned on in the morning, used sporadically (but consistently) during the day, then turned off at night. > Date: Mon, 13 Sep 2010 23:38:49 -0500 > From: lesmikes...@gmail.com > To: backuppc-users@lists.sourceforge.net > Subject: Re: [BackupPC-users] Why does my rsync backup takes 7 hours? > > That seems slow, but not completely out of line. If the machines are on all > the > time you would normally want a blackout period set for the times you are > likely > to be working. A couple of things to check: the server needs to hold the > entire directory listing in RAM, so be sure it has enough to avoid swapping. > Also, on the windows side you might have an on-access virus scanner slowing > you > down. > > -- > Les Mikesell > lesmikes...@gmail.com > On 9/13/10 10:26 PM, George Adams wrote: > > > > Hi, all. I'm running BackupPC 3.1.0 on a Linux server (in my home), using > > it to backup my WinXP box (on the same network) via rsync (which is run as > > a service under WinXP via Cygwin). > > > > The process seems to work, but it's really, really slow. Here's what I > > mean: > > > > Backup# Type Filled Level Start Date Duration/mins Age/days Server Backup > > Path > > 568 incr no 1 8/25 08:00 428.5 19.6 > > /backup/Photos/568 > > 569 incr no 1 9/11 09:00 171.4 2.6 > > /backup/Photos/569 > > 570 incr no 1 9/12 21:00 156.8 1.1 > > /backup/Photos/570 > > > > As you can see, the last couple of incremental backups of the photos > > directories on my XP box have taken between 2-3 hours, and the full backup > > takes a whopping 7 hours. > > > > TOTAL TOTAL TOTAL EXIST EXIST NEW NEW > > Backup# Type #Files Size/MB MB/sec #Files Size/MB #Files Size/MB > > 568 full 21665 132328.3 5.15 21665 132328.3 1 0.0 > > 569 incr 21702 132850.0 12.92 21673 132848.9 29 1.1 > > 570 incr 21719 132850.4 14.12 21694 132849.8 80 0.6 > > > > Now granted, this is a lot of files - 21,000+ files, 132GB. But even given > > that, are these incredibly long backup durations REALLY to be expected? > > Even worse, the WinXP computer really is almost unusable while this is > > going on. The hard drive is so busy (and rsync so resource-intensive) that > > other applications take forever to launch, run, etc. What I had hoped > > would be a quiet, unobtrusive way to backup the PC during the day actually > > makes it fairly unusable for several hours. > ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/