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https://issues.apache.org/jira/browse/DERBY-1664?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12907146#action_12907146
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Knut Anders Hatlen commented on DERBY-1664:
-------------------------------------------

I ran the tests on my workstation (running Solaris 11 Express snv_147), and got 
these results (averaged over 10 runs):

Java 1.6.0_21:

CONFIGURA&|DRIVERLOAD          |DBCREATE            |DBCLOSE             
|REOPEN              |TABLECREATE         
-------------------------------------------------------------------------------------------------------------------
DISK      |231                 |801                 |8                   |11    
              |117                 
MEMORY    |231                 |675                 |6                   |8     
              |111                 

CONFIGURA&|DRIVERLOAD          |DBCREATE            |DBCLOSE             
|REOPEN              |TABLECREATE         
-------------------------------------------------------------------------------------------------------------------
DISK      |0                   |253                 |4                   |10    
              |9                   
MEMORY    |0                   |153                 |2                   |5     
              |4                   

Java 1.7.0-ea-b108:

CONFIGURA&|DRIVERLOAD          |DBCREATE            |DBCLOSE             
|REOPEN              |TABLECREATE         
-------------------------------------------------------------------------------------------------------------------
DISK      |250                 |745                 |8                   |11    
              |129                 
MEMORY    |250                 |660                 |6                   |8     
              |138                 

CONFIGURA&|DRIVERLOAD          |DBCREATE            |DBCLOSE             
|REOPEN              |TABLECREATE         
-------------------------------------------------------------------------------------------------------------------
DISK      |0                   |247                 |4                   |8     
              |8                   
MEMORY    |0                   |145                 |2                   |5     
              |4                   

So in my experiments there was no difference in DRIVERLOAD between memory and 
disk databases, as one would expect.

> Derby startup time is too slow
> ------------------------------
>
>                 Key: DERBY-1664
>                 URL: https://issues.apache.org/jira/browse/DERBY-1664
>             Project: Derby
>          Issue Type: Improvement
>          Components: Store
>            Reporter: David Van Couvering
>         Attachments: derby_1664.java, perftest.diff
>
>
> I know it's hard to measure what "too slow" is, but this is a common 
> complaint and this affects overall perception of Derby.  This appears to be 
> related to another common complaint that it takes too long to create tables.  
> I am marking this as Urgent because of the impact it has to Derby perception 
> and the fact that the 10.2 release is going to get such wide distribution 
> through the Sun JDK.
> For background, see http://www.nabble.com/Startup-time-tf2012748.html#a5531684

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