I aslo run FB 2.5 on DELL poweredge with RAID 0 on wndows 2008 R2
and we don't have such problem

On 12/2/2010 8:25 PM, Maarten Klerk wrote:
> Hi all,
>
> Does anyone have a suggestion to solve the following problem?
>
> We are running Windows Server 2008 R2 on a brand new Dell PowerEdge
> with 4 cores and a RAID contoller system, with 2 harddisks.
>
> On top of it we run an application server and a firebird server (2.1,
> superserver).
>
> In this configuration Firebird seems to be very slow. It really slows
> down our whole application. It seems to be caused by the combination
> of firebird and a RAID controller. (I googled it). I would like to
> prove that this is the problem in our case as well.
>
> We did the following test in order to narrow down the problem. It was
> done by means of IBExpert and SQL Server Management console.
>
> In IBExpert we created the following tables:
> TESTTBL and CLONE, created a before insert trigger on testtbl
> Filled CLONE with 15000 records
> Run ‘insert into testtbl select * from clone;’
>
> We ‘ve got the following results:
>
> Firebird:
>
> Laptop 1: 3 seconds
> Laptop 2: 1,7 second
> Server: 5 seconds
>
> We did the same test on SQL Server Express (just to have a comparison).
>
>
> SQLServer Express:
> Laptop 1: 520 ms
> Laptop 2: 400 ms
> Server: : 400 ms
>
> Can anyone from the firebird community help me to explain the
> differences and explain what might be wrong in the configuration?
>
> How is the firebird driver behaving with respect to keeping files open?
>
>
> Thanks in advance!
>
> Maarten Klerk
>
>
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