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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (NIFI-1460) Test Performance improvement. Test Timeout Mitigation.
Date Tue, 02 Feb 2016 23:01:39 GMT

    [ https://issues.apache.org/jira/browse/NIFI-1460?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15129270#comment-15129270
] 

ASF GitHub Bot commented on NIFI-1460:
--------------------------------------

Github user PuspenduBanerjee commented on the pull request:

    https://github.com/apache/nifi/pull/202#issuecomment-178875032
  
    @trkurc  Thanks for reviewing. let me know in case can be merged or if I need to create
a patch.


> Test Performance improvement. Test Timeout Mitigation.
> ------------------------------------------------------
>
>                 Key: NIFI-1460
>                 URL: https://issues.apache.org/jira/browse/NIFI-1460
>             Project: Apache NiFi
>          Issue Type: Improvement
>          Components: Core Framework, Tools and Build
>    Affects Versions: 0.4.1
>         Environment: linux, unix with true random number generator.
>            Reporter: Puspendu Banerjee
>            Priority: Minor
>              Labels: performance
>             Fix For: 0.5.0
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> Existing test case nifi-framework-core/src/test/java/org/apache/nifi/controller/TestStandardFlowFileQueue.java
uses a huge number of call to UUID.randomUUID() which is very slow in linux , unix environment
if there is not much activity [ like mouse move etc.] .In addition to that UUID.randomUUID()
depends on /dev/(u)random to get a random number, such system call costs IO and /dev/random
is bandwidth/rate limited  which again slows down overall performance.



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