Re: Creating objects in the database

Hi Klaus,

Thanks for the reply. I am doing a comparison of Open Source object
databases and I have so far tried to add 20000 objects to various other
databases. These other databases do not give me the problems that I
mentioned when I use Prevayler. I would therefore like to know if there
is an error that I may be overlooking. I have attached the code with
this message.

Peter.

-----Original Message-----
From: Klaus Wuestefeld [mailto:[email protected]] 
Sent: Friday, February 06, 2009 10:49 PM
To: Open discussion about the Prevayler project.
Subject: Re: [Prevayler-discussion] Creating objects in the database

Are you doing SCADA or OLTP?


On Fri, Feb 6, 2009 at 3:24 PM, William Pietri <[email protected]>
wrote:
> Khayundi, Peter wrote:
>
> I am doing some timings with the Prevayler database. I inserted 20000
items
> into the database and timed this operation. The experiment was
repeated 10
> times. The resulting times differ widely and have a high standard
deviation.
> Does anybody have an explanation as to why the same experiment should
have
> such widely different timings?
>
>
>
> Hi, Peter. My first two guesses: other IO on the same disk and Java
garbage
> collection. You can reduce problems with the first by using a separate
disk,
> and with the latter by giving Java lots more RAM than necessary. There
are
> also assorted tunings you can do, but those depend on OS and JDK
version.
>
>
> William
>
> --
> William Pietri - [email protected] - +1-415-643-1024
> Agile consulting, coaching, and development: http://www.scissor.com/
> We'd love feedback on our new blog: http://agilefocus.com/
>
>
>
>
>
>
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code to
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local
resources and data with the reach of the web. Download the Adobe AIR SDK
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software. With Adobe AIR, Ajax developers can use existing skills and code to
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resources and data with the reach of the web. Download the Adobe AIR SDK and
Ajax docs to start building applications today-http://p.sf.net/sfu/adobe-com

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