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From "Sonal Gupta (Jira)" <j...@apache.org>
Subject [jira] [Updated] (SLING-9077) Improve runtime complexity of o.a.s.api.resource.path.PathSet's factory methods
Date Tue, 18 Feb 2020 10:04:00 GMT

     [ https://issues.apache.org/jira/browse/SLING-9077?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sonal Gupta updated SLING-9077:
-------------------------------
    Attachment: PerformanceScript.sh

> Improve runtime complexity of o.a.s.api.resource.path.PathSet's factory methods
> -------------------------------------------------------------------------------
>
>                 Key: SLING-9077
>                 URL: https://issues.apache.org/jira/browse/SLING-9077
>             Project: Sling
>          Issue Type: Improvement
>            Reporter: Dirk Rudolph
>            Priority: Major
>         Attachments: PerformanceScript.sh
>
>
> With SLING-8946 the PathSet used to keep track of the excluded paths for resource observation
event propagation of individual ResourceProviders started to grow. (The excludes PathSet of
the root-ResourceProvider / now contains all other ResourceProviders in a system).
> While registering a new ResourceProvider the context update builds a new PathSet which
is optimised with in PathSet#optimize() with O(n^2). Esp. when starting up the environment
this is consuming massive CPU time as it grows to O(n^3): for each RP calculate the exclusion
PathSet with O(n^2).



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