Jason Hughes wrote:
Nils Breunese (Lemonbit) wrote:Any ideas on how we can reduce the load? More/less nightly jobs? Less concurrent backups? Other tips? We used to backup 15 servers onto one BackupPC server, but now almost all of our backups are failing and the load is through the roof. Can we just go and install BackupPC 2.1.3 again?Are you sure the only change in your environment was BackupPC? I mean, did the file usage on any of the servers shift in some way so that more files are being backed up? Did you change transport mechanisms on any servers? File systems?
I'm pretty sure those servers are still pretty much the same. Transport mechanism didn't change (rsync over ssh), file systems are still the same. I did set some options differently. I disabled blackout periods as I figured we didn't need them (and probably could backup *more* machines if we'd allow backups during working hours). I also enabled multilevel backups ([1, 2, 3]), could that effect the load this much?
I noticed my SMB backups began a lot faster when I upgraded from a 10/100 network port to a gigabit port on my backup machine, though rsync wasn't affected too much. Adding memory to it also helped I think (from 128mb up to 256mb, to reduce the amount of paging by measuring the high-water mark and surpassing it).
All machines involved have at least 512 MB RAM and a 100 Mb connection. They're not on the same LAN though, they all have public IP addresses.
Nils Breunese.
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