On Tuesday 14 June 2005 19:36, Alan Jedlow wrote:
> Hi,
>
> I've built/installed/configured bacula-1.36.3-1.src.rpm on a
> Dell PowerEdge 2650(Dual Xeon 3.06GHz, 2 GB mem.); I'm using
> MySQL as the database.  The director, file, and storage
> services are all on this machine.
>
> I started a full backup of a 820 GB partition to a Qualstar
> TLS-4210 AIT2 tape library over a week ago; here's the
> latest client status:
>
> JobId 1 Job NightlySave.2005-06-03_17.43.14 is running.
>      Backup Job started: 03-Jun-05 17:43
>      Files=38,440,336 Bytes=221,072,291,925 Bytes/sec=238,689
>      Files Examined=41,386,068
>
> Is "Bytes/sec=238,689" typical perfomance ?

I have found that the throughput varies hugely between hosts. I
can typically backup from unix clients at between 11 and 2MB/s
and between 3-1MB/s from windows clients. I have some Windows
machines which seem to be unable to do better than 50KB/s.

To summarise, I think you could expect more.

In my environment I found that running the daemons on the
independant hosts improved performance a lot, so you might
find you get better performance by having a separate systems to
run the SQL database, storage daemon, and so on instead of having
one big box as you do now. I'm using the cheapest Dell servers
I can get and decent SATA discs (with FreeBSD 5.4) and happy with
it.

In my experience larger backups seem to run much slower, perhaps
the computational complexity of the algorithm grows without
bound as files/data is added (I have no idea if this is the case
or not)

> thanks,
>    alan
>
>
>
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HTH,
-- 
Dominic
GoodforBusiness.co.uk
I.T. Services for SMEs in the UK.


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