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https://issues.apache.org/jira/browse/NIFI-1460?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15131379#comment-15131379
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Puspendu Banerjee commented on NIFI-1460:
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[~tkurc] Thanks for you fast review, insights & having belief that
brainstorming produces something nice.
> 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
> Assignee: Tony Kurc
> Priority: Minor
> Labels: performance
> Fix For: 0.6.0
>
> 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.
> Workaround is rngd daemon(ref: http://linux.die.net/man/8/rngd)
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