Re: [BackupPC-users] BackupPC 3 load

[Nils B. (Lemonbit) <ni...@le...>]

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.