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From "Knut Anders Hatlen (JIRA)" <derby-...@db.apache.org>
Subject [jira] Reopened: (DERBY-212) Optimize some specific methods in Network Server to improve performance
Date Thu, 12 Jan 2006 11:08:21 GMT
     [ http://issues.apache.org/jira/browse/DERBY-212?page=all ]
     
Knut Anders Hatlen reopened DERBY-212:
--------------------------------------

     Assign To: Dyre Tjeldvoll  (was: Knut Anders Hatlen)

Reopening the issue since my patch didn't address everything mentioned
in the description. Dyre has started optimizing parseSQLDTA_work(), so
I reassign the issue to him.

> Optimize some specific methods in Network Server to improve performance
> -----------------------------------------------------------------------
>
>          Key: DERBY-212
>          URL: http://issues.apache.org/jira/browse/DERBY-212
>      Project: Derby
>         Type: Improvement
>   Components: Network Server, Performance
>     Versions: 10.1.1.0
>     Reporter: Kathey Marsden
>     Assignee: Dyre Tjeldvoll
>     Priority: Minor
>  Attachments: DERBY-212-parsePKGNAMCSN-2.diff, throughput-normalized.png, throughput.png
>
> In reviewing the Network Server Code and profiling there were 
> several areas that showed potential for providing performance 
> improvement.
> Functions that need optimizing to prevent unneeded object 
> creation and excessive decoding
> parsePKGNAMCSN()
> parseSQLDTA_work()
> buildDB2CursorName()
> In DDMWriter and DDMReader, use System Routines in 
> java.util.Arrays and System.arrayCopy instead of 
> writing code to do functions like copy arrays and 
> pad strings.

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