Bacula-users

Re: [Bacula-users] very slow backups, around 5mb/sec

2016-06-21 23:10:35
Subject: Re: [Bacula-users] very slow backups, around 5mb/sec
From: Randy Katz <rkatz AT simplicityhosting DOT com>
To: bacula-users AT lists.sourceforge DOT net
Date: Tue, 21 Jun 2016 20:09:36 -0700
I would really like to know how much speed gain you get when you switch
to Mysql or Postgres, please

post it here, thanks.


On 6/21/2016 1:36 PM, fgd9329g wrote:
> This might be a dumb question, but I can't figure it out. 
>
> Debian 8
> Bacula Version: 5.2.6
> sqlite3 -version 3.8.7.1
> Backing up to disks, not tape.
>
> I have two bacula systems, both have this same slowness issue. Here's what 
> the final output of our largest job looks like:
>
> Elapsed time:           4 days 1 hour 58 mins 23 secs
> Priority:               10
> FD Files Written:       20,103,048
> SD Files Written:       20,103,048
> FD Bytes Written:       922,921,450,734 (922.9 GB)
> SD Bytes Written:       925,825,875,288 (925.8 GB)
> Rate:                   2616.7 KB/s
> Software Compression:   54.4 %
> VSS:                    no
> Encryption:             no
> Accurate:               no
>
> The bacula server and remote server both have 10GB network cards. On the 
> bacula server, if I scp a directory from the remote server it will transfer 
> at about 50MB/sec and a single multi-GB file will transfer close to 
> 300MB/sec. So the network seems okay. Even an rsync takes ~40sec when bacula 
> takes 12 minutes on the same directory.
>
> The bacula and remote servers are pretty hefty too: 20+ cores, 32GB of ram, 
> SAS hard drives, 10GB network cards. During the backup process they don't 
> appear to be busy; one core is at 11%, the memory sits around 1gb used, iotop 
> reports very low IO%. 
>
> I thought it might be a network issue, so I copied a directory locally to the 
> bacula server then backed it up. It only went marginally faster, and here's 
> that output:
>
> Elapsed time:           12 mins 43 secs
> Priority:               10
> FD Files Written:       93,592
> SD Files Written:       93,592
> FD Bytes Written:       3,989,758,931 (3.989 GB)
> SD Bytes Written:       4,000,333,487 (4.000 GB)
> Rate:                   5229.0 KB/s
> Software Compression:   67.9 %
> VSS:                    no
> Encryption:             no
> Accurate:               no
>
>
> The bacula-dir section for the big job looks like:
> FileSet {
>         Name = "mail set"
>         Include {
>                 Options {
>                         compression = GZIP
>                         signature = MD5
>                         }
>                 File = /usr
>                 File = /etc
>                 File = /var/spool/cyrus/mail
>                 File = /var
>                 }
>         Exclude {
>                 File = /proc
>                 File = /tmp
>                 File = /.journal
>                 File = /.fsck
>                 File = /var/cache
>                 }
>         }
> Job {
>     Name = "mail"
>     JobDefs = "Default"
>     Client = mail-fd
>     FileSet = "mail set"
>     Spool Attributes = yes
> }
>
>
> Turning off compression didn't seem to make much of a difference either. I 
> just don't know what to do at this point. Does anybody have an idea for why 
> these transfers are so slow through bacula?
>
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>
>
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