[jira] Closed: (DERBY-212) Optimize some specific methods in Network Server to improve performance

["Kathey Marsden (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DERBY-212?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kathey Marsden closed DERBY-212.
--------------------------------


> Optimize some specific methods in Network Server to improve performance
> -----------------------------------------------------------------------
>
>                 Key: DERBY-212
>                 URL: https://issues.apache.org/jira/browse/DERBY-212
>             Project: Derby
>          Issue Type: Improvement
>          Components: Network Server, Performance
>    Affects Versions: 10.1.1.0
>            Reporter: Kathey Marsden
>         Assigned To: 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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