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https://issues.apache.org/jira/browse/NIFI-2851?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15582434#comment-15582434
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ASF GitHub Bot commented on NIFI-2851:
--------------------------------------

Github user olegz commented on the issue:

    https://github.com/apache/nifi/pull/1116
  
    @markap14 PR comments are addressed. Thanks for reviewing. Back at ya!


> Improve performance of SplitText
> --------------------------------
>
>                 Key: NIFI-2851
>                 URL: https://issues.apache.org/jira/browse/NIFI-2851
>             Project: Apache NiFi
>          Issue Type: Improvement
>          Components: Core Framework
>            Reporter: Mark Payne
>            Assignee: Oleg Zhurakousky
>             Fix For: 1.1.0
>
>
> SplitText is fairly CPU-intensive and quite slow. A simple flow that splits a 
> 1.4 million line text file into 5k line chunks and then splits those 5k line 
> chunks into 1 line chunks is only capable of pushing through about 10k lines 
> per second. This equates to about 10 MB/sec. JVisualVM shows that the 
> majority of the time is spent in the locateSplitPoint() method. Isolating 
> this code and inspecting how it works, and using some micro-benchmarking, it 
> appears that if we refactor the calls to InputStream.read() to instead read 
> into a byte array, we can improve performance.



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