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https://issues.apache.org/jira/browse/FELIX-2436?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12881239#action_12881239
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Holger Hoffstätte commented on FELIX-2436:
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A much better solution would be to turn jnotify 
(http://jnotify.sourceforge.net/) into a bundle and let the OS do the heavy 
lifting instead.


> Reduce the number files created by the fileinstall Scanner.
> -----------------------------------------------------------
>
>                 Key: FELIX-2436
>                 URL: https://issues.apache.org/jira/browse/FELIX-2436
>             Project: Felix
>          Issue Type: Improvement
>          Components: File Install
>    Affects Versions: fileinstall-2.0.8
>            Reporter: Peter Lawrey
>         Attachments: reduce_object_construction.patch
>
>
> The fileinstaller is called regularly and there can be two or more instances 
> in a server.
> However its object allocation doesn't considered that 99.999+% of the time 
> none of the files change. 
> (polling one per second and changing files once per day is means the file 
> installer will see a change 0.001% of the time)
> In our application, polling every second results in the Scanner creating more 
> objects than the application itself. We can turn down the polling rate but 
> even at once every 10s it creates more objects than any other component!
> For this reason I have changed the Scanner to first check whether any files 
> have changed attempting to compute what has changed.
> See atached for a patch of the changes.  This reduces the number of obejcts 
> created by atleast a factor of 3.

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