[jira] Updated: (DERBY-2328) Reduce monitor contention in SinglePool

["Knut Anders Hatlen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DERBY-2328?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Knut Anders Hatlen updated DERBY-2328:
--------------------------------------

    Attachment: unused.diff

LanguageConnectionContext has a method called getLockSpace(int) which creates a compatibility space, but the method is not used. unused.diff removes the method so that it doesn't complicate things when the use of compatibility space objects changes. All the tests passed.

> Reduce monitor contention in SinglePool
> ---------------------------------------
>
>                 Key: DERBY-2328
>                 URL: https://issues.apache.org/jira/browse/DERBY-2328
>             Project: Derby
>          Issue Type: Sub-task
>          Components: Performance, Services
>    Affects Versions: 10.3.0.0
>            Reporter: Knut Anders Hatlen
>         Assigned To: Knut Anders Hatlen
>            Priority: Minor
>         Attachments: unused.diff
>
>
> When multiple threads enter the lock manager, there might be contention on SinglePool's monitor. The contention should be reduced in order to improve scalability.

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