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Re: [Duplicity-talk] duplicity collection status slowness
From: |
Erik Romijn |
Subject: |
Re: [Duplicity-talk] duplicity collection status slowness |
Date: |
Mon, 25 Aug 2014 18:19:42 +0200 |
Hello all,
Is there anyone who might be able to provide any insights regarding this issue?
I'm happy to dig into the code myself, but I don't really know what would be
the best place to start.
cheers,
Erik
On 20 Jul 2014, at 19:39, Erik Romijn <address@hidden> wrote:
> Hello all,
>
> I'm using duplicity to run a few backups for my servers, and generally found
> it to work very well. However, although my data is incredibly tiny, duplicity
> has become incredibly slow, which I think I've narrowed down to the
> collection status process.
>
> My source file size is only 20MB, but running this backup takes about 7
> minutes, and is almost completely cpu bound. Running the collection status
> takes nearly the same amount, so it would seem that this is where the
> slowness comes from.
>
> I make incremental backups every 15 minutes, with a full backup after 23
> hours, so 92 sets per day. I currently have 19 backup chains, according to
> collection status, and there are no orphaned or incomplete sets. The source
> file size is about 20MB. In total the destination volume is 154MB now.
> Running verify confirms that the backups are correct.
>
> These numbers are for the backups of my /var/log, but I have another backup
> of an unrelated directory of about 300MB on the same backup schema, which
> shows similar numbers for collection status.
>
> One workaround would be for me to move the files away from the duplicity
> destination, so that the total collection appears smaller. But that leaves me
> to wonder: why does collection status take so much time, particularly
> considering it's cpu bound?
>
> I'm running duplicity 0.6.23 with python 2.7.6 on an Ubuntu 14.04 VPS.
>
> The full duplicity command line I use is:
> /usr/bin/duplicity --full-if-older-than 23h --encrypt-sign-key [...]
> --verbosity info --ssh-options=-oIdentityFile=/root/.ssh/backup_rsa
> --exclude-globbing-filelist /root/duplicity_log_exclude_filelist.txt /var/log
> sftp://address@hidden/[...]/backups/log
>
> Can anyone here provide insights into what might be the issue, and what would
> be the best approach to tackle this?
>
> cheers,
> Erik
>
>
>
>
>
>
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- Re: [Duplicity-talk] duplicity collection status slowness,
Erik Romijn <=