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From Sunitha Kambhampati <ksunitha...@gmail.com>
Subject Re: [jira] Commented: (DERBY-260) Derby is not stable on multiprocessor or Hyperthreating architectures.
Date Wed, 17 Aug 2005 17:04:55 GMT
Roland Beuker wrote:

> Hello Mike,
> Both Hibernate and Cloudscape (derby) responsible people telling me 
> there should no problem with their product in combination with dual 
> processor or Hyperthreating. But in real live this combination is not 
> stable. 

Can you explain what kind of problems were there ?   Maybe if there are 
some more details, someone could look into it.    Have you had a chance 
to try out with the latest 10.1 derby release.


> Too bad, because this could be a great combination (both complete Java 
> and free software). To save time I switched to a native database 
> (Ingres) but now I have a lot of installation issues. The problem is 
> reproducible. Just start a Hibernate project in combination with 
> Cloudscape on a Hyperthreating platform and things will go wrong. The 
> only issue is who’s responsible for this… Another problem is the fact 
> that there are not a lot of Cloudscape users in the Hibernate 
> community because the database is missing some features, which are 
> needed by Hibernate.
> http://forum.hibernate.org/viewtopic.php?t=942244&highlight=derby 
> <http://forum.hibernate.org/viewtopic.php?t=942244&highlight=derby>
> http://forum.hibernate.org/viewtopic.php?t=939827&highlight=derby 
> <http://forum.hibernate.org/viewtopic.php?t=939827&highlight=derby>
> http://forum.hibernate.org/viewtopic.php?t=939919&highlight=derby 
> <http://forum.hibernate.org/viewtopic.php?t=939919&highlight=derby>
> Regards,
> Roland Beuker
> Mike Matrigali (JIRA) wrote:
>>    [ http://issues.apache.org/jira/browse/DERBY-260?page=comments#action_12318943
>>Mike Matrigali commented on DERBY-260:
>>Roland did you ever get any more information about this.  Should we close this as
not a derby issue,  or at least not reproducible?
>>>Derby is not stable on multiprocessor or Hyperthreating architectures.
>>>         Key: DERBY-260
>>>         URL: http://issues.apache.org/jira/browse/DERBY-260
>>>     Project: Derby
>>>        Type: Bug
>>> Environment: P4 3GHz with Hyperthreating, 512 Mb, WIN2000 
>>>    Reporter: Roland Beuker
>>>I am using IBM Cloudscape Version 10.0 with Hibernate and it works great. But
at the time I was deploying my project on a target with a Hyperthreating CPU things went wrong
(database very unstable). It seems that Cloudscape is not functioning on multiprocessor or
Hyperthreating architectures. Has anyone some more information?
>>>Roland Beuker 

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