BackupPC-users

Re: [BackupPC-users] (somewhat solved) Backing up many small files

2013-02-05 11:05:46
Subject: Re: [BackupPC-users] (somewhat solved) Backing up many small files
From: "Sorin Srbu" <sorin.srbu AT orgfarm.uu DOT se>
To: "'General list for user discussion, questions and support'" <backuppc-users AT lists.sourceforge DOT net>
Date: Tue, 5 Feb 2013 17:03:50 +0100
> -----Original Message-----
> From: Sorin Srbu [mailto:sorin.srbu AT orgfarm.uu DOT se]
> Sent: Tuesday, February 05, 2013 4:38 PM
> To: 'General list for user discussion, questions and support'
> Subject: Re: [BackupPC-users] (somewhat solved) Backing up many small
> files
>
> > Oh, yeah. I remember that one now, I followed it rather closely for a
> > while. Thanks for the reminder!
> >
> > Doing the suggested find-operation. Will be back in a while with more
> > info.
>
> Only about 2 milion files.
> user@BPC-client ~/ [0]# find /home | wc -l
> 1883781
>
> And the test incremental backup took 118.5 min's for 61 MB.
>
> Somewhat better I guess after the noa* tweaks. I'm inclined to believe
> that
> the bootle-neck is, as Markus points out, that the client maybe isn't
> to
> top-notch and the sheer number of files to be checked.
>
> I'll leave this issue as somewhat solved and maybe wait for BPC to
> implement
> a more modern rsync-strategi as mention in the archived thread above.
>
> Thanks everybody!

A quick additional note, the drives on the client seem to be pretty fast, even 
compared to the raid0 array...

user@BPC-client ~/ [0]#  hdparm -tT /dev/sd[ab]

/dev/sda:
 Timing cached reads:   10832 MB in  2.00 seconds = 5416.82 MB/sec
 Timing buffered disk reads:  208 MB in  3.02 seconds =  68.77 MB/sec

/dev/sdb:
 Timing cached reads:   11108 MB in  2.00 seconds = 5554.84 MB/sec
 Timing buffered disk reads:  254 MB in  3.00 seconds =  84.54 MB/sec

-- 
/Sorin

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