Yes i am atm, since it's just a quit check to run a query, but would
this explain the SQL executing this slowly?
I know i'm not using any "best" practises and things, this is the
first thing im doing with both NHibernate and EF.
Here is the code running it.
Configuration cfg = new Configuration();
cfg.Configure();
cfg.AddAssembly(typeof(Debiteur).Assembly);
ISessionFactory factory = cfg.BuildSessionFactory();
ISession session = factory.OpenSession();
IList<Debiteur> lijst = session.CreateCriteria(typeof
(Debiteur)).List<Debiteur>();
dataGridView1.DataSource = lijst;
On 12 aug, 13:22, Kim Johansson <hagbarddenst...@gmail.com> wrote:
> Are you creating a new SessionFactory each run? (SLOOOOOOOOOOOW!!!)
>
> You should use a single instance SessionFactory and just create new
> sessions.
>
> F.B. ten Kate wrote:
> > Hello there, im currently looking at some differences between both
> > ORM's and to get a good feel for both i try to query from one table
> > and simply drop all the data in a DataGridView.
>
> > Easy as pie right?
>
> > Now here is the different SQL's beeing generated
>
> > NHibernate:
>
> > "SELECT this_.Debiteur_ID as Debiteur1_0_0_, this_.Debiteurnaam as
> > Debiteur2_0_0_, this_.Entiteit_ID as Entiteit3_0_0_, this_.Sorteernaam
> > as Sorteern4_0_0_, this_.DatumWijziging as
> > DatumWij5_0_0_, this_.Actief_NeeJa as Actief6_0_0_ FROM tbl_Debiteur
> > this_"
>
> > Enitity Framework:
>
> > "SELECT
> > [Extent1].[Actief_NeeJa] AS [Actief_NeeJa],
> > [Extent1].[DatumWijziging] AS [DatumWijziging],
> > [Extent1].[Debiteur_ID] AS [Debiteur_ID],
> > [Extent1].[Debiteurnaam] AS [Debiteurnaam],
> > [Extent1].[Entiteit_ID] AS [Entiteit_ID],
> > [Extent1].[Sorteernaam] AS [Sorteernaam]
> > FROM [dbo].[tbl_Debiteur] AS [Extent1]"
>
> > Okay, so sofar EF wins in readability atleast but i dont intend to
> > actually look at the queries so i'm not worried.
>
> > I noticed that NHibernate was ALOT slower then EF, the reasons seemed
> > like a mistery to me so i ran SQL Profiler.
>
> > When i run the NHibernate project the query runs for a duration of
> > 19369 (milliseconds)
>
> > Then i run Enitity frame work which runs for a duration of 3621
> > (milliseconds)
>
> > (I clear caches between the different queries)
>
> > I then run the query in SQL Management Studio, The NHibernate has a
> > duration of 4291 (milliseconds)
> > I do the same for the Enitity framework which has a duration of 4291
> > (milliseconds)
>
> > Can anyone explain to me these durations? mostly the NHibernate time
> > when running it from application code is HUGE. Eventhough the SQL is
> > exactly the same...
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