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From Mike Matrigali <mikem_...@sbcglobal.net>
Subject Re: [jira] Commented: (DERBY-260) Derby is not stable on multiprocessor or Hyperthreating architectures.
Date Tue, 10 May 2005 17:12:31 GMT
I also would like to see more information on this.  I have been running 
the full set of tests on a 2 processor windows 2000 machine for the last
5 years or so.  The machine is slow by today's standards (700 mhz 
processors), but I don't know of any outstanding database server issues 
due to multiprocessor.

Sunitha Kambhampati (JIRA) wrote:
>      [ http://issues.apache.org/jira/browse/DERBY-260?page=comments#action_64651 ]
> Sunitha Kambhampati commented on DERBY-260:
> -------------------------------------------
> I have run some simple tests on a 1cpu (linux machine) with hyperthreading enabled and
once on a 2cpu (Intel Xeon) win2k machine with hyperthreading enabled and it worked fine.

> Can you provide more details on what issues you noticed. That would really help to resolve
this issue. 
>>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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