Hallo Thomas,
in der neuesten Distribution des Raspberry Wheezy ist die JVM von Oracle
intergriert.
Ich finde die Performance für diese kleine Maschine nicht so schlecht:
select auf eine Tabelle (10 Spalten) mit 100000 Sätzen in ca. 10mSec.
(Ergebnis: 1 Satz)
Für meine Anwendung ist das völlig ok.
Was allerdings total nervt ist das DriverManager.GetConnection(), welches
nämlich fast 7 Sekunden läuft. Da ich vorhabe, 12 Threads mit je einer
Connection zu verwenden ist das ein ziemliches Problem beim Startup des
Systems ...
Vielleicht hast Du da noch einen Tipp für mich!?
Danke
Peter
The latest distribution of Raspberry Wheezy contains the Oracle JVM.
I think the performance of this little machine is not so bad:
select on a table (10 columns) with 100,000 records in about 10mSec.
(result: 1 record)
For my application that's complete ok.
However, what totally sucks is the DriverManager.getConnection (), which in
fact needs almost seven seconds to return. Since I plan to use 12 threads,
each with a connection that is quite a problem during startup of the system
...
Maybe you've got a idea for me to solve this.
Thank you
Peter
.
Am Donnerstag, 2. Januar 2014 14:12:37 UTC+1 schrieb Famco:
>
> Hi,
>
> I am working on a home project with h2 on Raspberry Pi. I managed to get
> the h2 running and it seems to work good and pretty fast. Now I have some
> questions wich the manual doesnt answer:
>
> 1) the quickstart section on the homepage tells that using "jdbc:h2:~/test"
> should create the test database in the homedirectory. In fact the database
> exists (because it works!), but i cannot find the file on the raspberry pi.
> 2) should I use any special settings to avoid problems caused by an
> unexpected "powerdown" of the raspberry?
>
> Thank you in advance
>
> Famco
>
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