[jira] [Reopened] (JCR-3117) Stats for the PersistenceManager

["Alex Parvulescu (Reopened) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/JCR-3117?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alex Parvulescu reopened JCR-3117:
----------------------------------

      Assignee:     (was: Alex Parvulescu)

reopening to reconsider new patches
                
> Stats for the PersistenceManager
> --------------------------------
>
>                 Key: JCR-3117
>                 URL: https://issues.apache.org/jira/browse/JCR-3117
>             Project: Jackrabbit Content Repository
>          Issue Type: Sub-task
>          Components: jackrabbit-core
>            Reporter: Alex Parvulescu
>            Priority: Minor
>             Fix For: 2.3.2
>
>         Attachments: 0001-JCR-3117-Stats-for-the-PersistenceManager.patch, JCR-3117.patch
>
>
> Statistics for the PersistenceManager impl that cover: 
>  - bundle cache access count, 
>  - bundle cache miss count, 
>  - bundle cache miss avg duration (this avg includes the penalty of having to load from the underlying storage / can be interpreted as avg read latency as there is no cache involved) 
>  - bundle writes per second
> What it doesn't cover is :
>  - number of bundles
>  - size of workspace
> as these are values that are expensive to compute on demand, and caching them would imply being able to store the values (which is not possible currently).

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