On 5/09/2012 02:52, James Harper wrote:
>>       Hi
>>
>> I have Bacula 5.01 Director installed on a Linux Ubuntu 10.04 server, and a
>> Bacula 5.2.10 Client (Bacula-fd) running on a Windows Server 2008
>> R2 SP1 server, with Hyper-V role installed. Purpose is her to backup the host
>> server, not the virtual machines.
>>
>> Initially the backup transfer rate was extremely slow (kbytes/sec).
>> Changing the Network adapter (Broadcom NetXstreme 5714) settings to
>> Large end Offload (LSO) = off as suggested in some posts increased the
>> transfer rate to 1MB/sec, which is still 10 to 80 times slower than the 
>> transfer
>> rates I have with other servers running Linux or Windows 7. Transferring a 
>> file
>> 'by hand' over the net runs at 80 MB/sec ...So I suspect a problem with
>> Bacula-fd.
>>
>> Any idea how to configure the server so that I can get decent backup transfer
>> speeds ? I can't imagine these servers can't be managed by Bacula.
>>
> First use something like iperf to make sure that the problem is not bacula. 
> Test all possible combinations of send/receive for the following:
>
> . host server
> . bacula sd server
> . another pc/server that is separate (can be linux or windows)
>
> That should give you concrete evidence as to whether the problem is related 
> to bacula. Hyper-V network can be terribly difficult in some cases.
>
> James
>
>
>
>
> -----
> Aucun virus trouve dans ce message.
> Analyse effectuee par AVG - www.avg.fr
> Version: 2012.0.2197 / Base de donnees virale: 2437/5249 - Date: 04/09/2012
>
>
>

Thanks James for the suggestion.

I have made the performance tests : copying a file from the host server 
to another Windows 7 PC was done at 80MBytes/sec.

Using iperf I measured following performances :

bacula-fd = the windows server 2008 R2 host, 1Gb/sec NIC
bacula-dir = a linux ubuntu 10.04 PC, 1 100Mb/sec NIC
bacula-sd = a linux ubuntu 10.04 server, 1 Gbite/sec NIC


iperf server            iperf client                Performance
----------------            --------------- --------------------

bacula-fd                bacula-dir                10 MBytes/sec
bacula-fd                bacula-sd                111 MBytes/sec
bacula-dir                bacula-fd                10 MBytes/sec
bacula-sd                bacula-fd                 26 MBytes/sec

So normally the bacula client should be able to write to the bacula 
storage at 26MBytes/sec ?

Any suggestions ?

Paul

-- 
Paul VAN WAMBEKE
ICT OpenUp! and GPI Projects
National Botanic Garden of Belgium
Bouchout Domain, Nieuwelaan 38
1860 Meise

Tel: ++32 2 260 09 66
Fax: ++32 2 260 09 45


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