[ 
https://issues.apache.org/jira/browse/PDFBOX-5823?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17860122#comment-17860122
 ] 

Jonathan Prates commented on PDFBOX-5823:
-----------------------------------------

hi [~lehmi] is there any estimated date for the 3.0.3 to go live?

> StringUtil.PATTERN_SPACE memory optmisation
> -------------------------------------------
>
>                 Key: PDFBOX-5823
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-5823
>             Project: PDFBox
>          Issue Type: Improvement
>          Components: PDModel
>    Affects Versions: 3.0.3 PDFBox
>            Reporter: Jonathan Prates
>            Assignee: Andreas Lehmkühler
>            Priority: Minor
>             Fix For: 3.0.3 PDFBox, 4.0.0
>
>         Attachments: Main-1.java, Main.java, Screenshot 2024-05-19 at 
> 22.39.10.png, Screenshot 2024-05-19 at 22.40.17.png, Screenshot 2024-05-21 at 
> 20.21.43.png
>
>
> PDAbstractContentStream uses StringUtil.PATTERN_SPACE regexp to evaluate if a 
> word has a space in it 
> ([https://github.com/apache/pdfbox/blob/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/PDAbstractContentStream.java#L1624])
> For large documents ~800 pages and small string sequences (like a regular 
> word), it causes a memory overhead (see attached), due to the several extra 
> allocations. I've replaced the regexp for space and \t using word.contains, 
> and since it's a O ( 1 ) operation that does not require extra allocations, 
> memory used has been reduced.
> What would be the implications of replacing this block for contains()?
> Since \s is [ \t\n\x0B\f\r], I believe we have a simplified version to 
> allocate less memory.
>  



--
This message was sent by Atlassian Jira
(v8.20.10#820010)

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscr...@pdfbox.apache.org
For additional commands, e-mail: dev-h...@pdfbox.apache.org

Reply via email to