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Posted to derby-dev@db.apache.org by "Kristian Waagan (JIRA)" <ji...@apache.org> on 2011/02/16 19:07:24 UTC

[jira] Commented: (DERBY-5048) Tune the istat knobs and possibly add existing knobs

    [ https://issues.apache.org/jira/browse/DERBY-5048?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12995422#comment-12995422 ] 

Kristian Waagan commented on DERBY-5048:
----------------------------------------

Hi Rick,

This looks very much like DERBY-4940?
And did you mean to write possibly add *new* knobs?

> Tune the istat knobs and possibly add existing knobs
> ----------------------------------------------------
>
>                 Key: DERBY-5048
>                 URL: https://issues.apache.org/jira/browse/DERBY-5048
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL, Store, Test
>    Affects Versions: 10.8.0.0
>            Reporter: Rick Hillegas
>
> There is a discussion about reasonable defaults for the undocumented istat knobs and about whether additional knobs are needed: http://old.nabble.com/forum/Search.jtp?forum=105&local=y&query=question+about+istats+thresholds
> This issue is a place to continue those discussions and, if necessary, to hang patches. At the moment, we are still planning to not document these knobs. Instead, we would like to gain experience about how istat behaves in the wild. From that experience, we hope to figure out whether these are the right knobs, how to set reasonable defaults for them, and whether we should document how to override Derby's defaults.

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