[jira] [Commented] (FELIX-5987) Slow ServiceComponentRuntime with delivering ServiceReferenceDTOs

["Thomas Watson (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FELIX-5987?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16763121#comment-16763121 ] 

Thomas Watson commented on FELIX-5987:
--------------------------------------

I ran into an NPE using this latest fix.  I fixed that in FELIX-6055

> Slow ServiceComponentRuntime with delivering ServiceReferenceDTOs
> -----------------------------------------------------------------
>
>                 Key: FELIX-5987
>                 URL: https://issues.apache.org/jira/browse/FELIX-5987
>             Project: Felix
>          Issue Type: Improvement
>          Components: Declarative Services (SCR)
>    Affects Versions: scr-2.1.8, scr-2.1.10, scr-2.1.12, scr-2.1.14
>            Reporter: Carsten Ziegeler
>            Assignee: Karl Pauls
>            Priority: Major
>             Fix For: scr-2.1.16
>
>         Attachments: patch.txt
>
>
> Since the 2.1.8 we switched the DTO generation in the runtime service to use the ServiceReferenceDTO from the framework instead of duplicating that logic. However, as the framework only provides a method to get all ServiceReferences for a bundle, this results in a huge drop in performance within the DTO generation. This gets even worse if a set of DTOs is to be generated, as each time the framework is asked for all DTOs of a bundle.
> As there is no other way to get the ServiceReferenceDTO from the framework, the service runtime should probably cache the information; 



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