db-derby-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Mike Matrigali (JIRA)" <derby-...@db.apache.org>
Subject [jira] Commented: (DERBY-465) Embedded Derby-PointBase comparison
Date Wed, 20 Jul 2005 18:21:54 GMT
    [ http://issues.apache.org/jira/browse/DERBY-465?page=comments#action_12316262 ] 

Mike Matrigali commented on DERBY-465:
--------------------------------------

note that the results of the select * tests posted at http://jamie.ideasasylum.com/notebook/index.php?id=4,
show 50,000 row select of same table
you are using takes 375 ms. on a slightly slower machine.  There is definitely something strange
going on with your results.  I have read over 
the .java files you posted and nothing jumps out at me.  I recommend debugging the single
user derby select test, verify number of rows and 
that you aren't missing any errors.  

> Embedded Derby-PointBase comparison
> -----------------------------------
>
>          Key: DERBY-465
>          URL: http://issues.apache.org/jira/browse/DERBY-465
>      Project: Derby
>         Type: Wish
>   Components: Test
>     Versions: 10.0.2.1, 10.0.2.0
>  Environment: Windows Server 2003, 4 processors, summary CPU 3.00 Ghz, RAM 1 Gb
>     Reporter: Peter Kovgan
>  Attachments: Benchmarks_info_independent.doc, DBOperations.java, Multithreading-access
read.doc, User.java, derby-optimization.doc, derby-pb1.doc
>
> I have tested 4 major embedded DB.
> I have found that major disadvantage of Derby is 
> 1)low insert speed and 
> 2)significant performance degradation in select, update, delete  operation speed starting
from some table size.
> PointBase in comparison has not such degradation.
> It will be better if you improve your product.
> Good luck and thank you.

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators:
   http://issues.apache.org/jira/secure/Administrators.jspa
-
For more information on JIRA, see:
   http://www.atlassian.com/software/jira


Mime
View raw message