On Thu, Mar 3, 2011 at 9:52 AM, Fabio Napoleoni - ZENIT <fabio AT zenit DOT 
org> wrote:
>
> Il giorno 03/mar/2011, alle ore 04.52, Fabio Napoleoni - ZENIT ha scritto:
>
>> I have my director using an external raid device which exports its 
>> filesystem with nfs protocol as storage. I just ended my bacula 
>> configuration and just launched my first remote job. I have this in the 
>> report
>>
>> JobId 3: Job write elapsed time = 00:14:23, Transfer rate = 1.182 M 
>> Bytes/second
>>
>> which seems a little poor to me (our network is currently on a 100M switch, 
>> we're planning to upgrade with something better in the near future). 
>> Currently data flows from bacula-fd on client to bacula-sd on bacula server 
>> and then the storage daemon writes data on a volume mounted in an nfs 
>> partition, so data goes on the wire at the same time.
>>
>> Is advisable to enable data spooling in the storage daemon in this situation?
>
> I made a try with this results
>
> JobId 7: Spooling data ...
> JobId 7: Job write elapsed time = 00:13:07, Transfer rate = 1.295 M 
> Bytes/second
> JobId 7: Committing spooled data to Volume "FullVolume-0004". Despooling 
> 1,021,072,888 bytes ...
> JobId 7: Despooling elapsed time = 00:02:19, Transfer rate = 7.345 M 
> Bytes/second
> JobId 7: Sending spooled attrs to the Director. Despooling 6,816,214 bytes ...
>
> There is only a little improvement of performances.
>
> So I'm asking you what is the transfer rate in your jobs? These rates are 
> normal or are they slow compared to yours?
>

I use gigabit and LTO2 so I am seeing 20 to 50 MB/s per tape drive in
my 2 drive LTO2 autochanger.

John

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