On Thu, Feb 18, 2010 at 07:51:13AM -0700, Mike Bydalek wrote:
> Recently I've started using BackupPC to backup my file server and am
> seeing some things that just don't quite make much sense. Lately
> backups have been taking quite some time, in fact the current one
> started on 2/16 @ 11pm and is still running. I do have a lot of data,
> around 330G, but not a whole lot changes on a daily basis.
>
> Here are my latest backups with the times:
>
> Compression performance for files already in the pool and newly
> compressed files.
> Existing Files New Files
> Backup# Type Comp Level Size/MB Comp/MB Comp
> Size/MB Comp/MB Comp
> 0 full 3 78446.6 45871.8 41.5% 258032.2
> 155715.6 39.7%
> 2 incr 3 276482.0 165123.8 40.3% 143.0 70.3
> 50.8%
> 3 incr 3 900.7 530.7 41.1% 964.7 469.5 51.3%
> 4 incr 3 113.5 2.7 97.6% 218.0 30.8 85.9%
> 5 incr 3 73.4 6.1 91.7% 194.8 32.2 83.5%
> 6 incr 3 304.3 172.2 43.4% 1735.9 944.0 45.6%
> 7 incr 3 275955.3 165019.1 40.2% 1337.0 658.0
> 50.8%
> 8 incr 3 520.4 249.4 52.1% 672.7 282.5 58.0%
> 9 incr 3 502.9 243.5 51.6% 587.6 264.1 55.1%
> 10 incr 3 116.8 3.7 96.8% 201.5 24.3 88.0%
> 11 incr 3 14.0 3.0 78.7% 244.3 32.8 86.6%
> 12 incr 3 127.1 5.3 95.9% 82.2 22.3 72.8%
> 13 incr 3 276989.9 165643.4 40.2% 329.3 40.7
> 87.7%
> 14 incr 3 275957.9 165146.0 40.2% 1503.5 615.1
> 59.1%
>
> My question is, why did backups 13 and 14 backup all that data? Same
> with 2 and 7 for that matter.
What level are your incremental backups? if backup 2 was at level 1
and backup 7 was at level 1 (you use levels 1 2 3 4 5 6) and backup 13
is back at level 1 that's kind of what I would expect since level 1
backs up everything since since the last full.
However 14 should be quite a bit less unelss it was also a level 1.
> Below is my config. I'm still messing with the IncrLevels and have a
> super short period just to get some increments and all that going.
[...]
> $Conf{IncrLevels} = [
> '1',
> '2',
> '3',
> '4',
> '5',
> '6'
> ];
--
-- rouilj
John Rouillard System Administrator
Renesys Corporation 603-244-9084 (cell) 603-643-9300 x 111
------------------------------------------------------------------------------
Download Intel® Parallel Studio Eval
Try the new software tools for yourself. Speed compiling, find bugs
proactively, and fine-tune applications for parallel performance.
See why Intel Parallel Studio got high marks during beta.
http://p.sf.net/sfu/intel-sw-dev
_______________________________________________
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/
