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https://issues.apache.org/jira/browse/CASSANDRA-13078?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16076962#comment-16076962
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Ariel Weisberg commented on CASSANDRA-13078:
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It's fine we would just override it for CircleCI so it's 1. For ASF Jenkins it
really depends on how big those boxes, but I am pretty sure we can pick a
number > 1. A quad-core box can handle 4 just fine.
> Increase unittest test.runners to speed up the test
> ---------------------------------------------------
>
> Key: CASSANDRA-13078
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13078
> Project: Cassandra
> Issue Type: Improvement
> Components: Testing
> Reporter: Jay Zhuang
> Priority: Minor
> Attachments: unittest.png, unittest_time.png
>
>
> The unittest takes very long time to run (about 40 minutes on a macbook). By
> overriding the
> [{{test.runners}}|https://github.com/apache/cassandra/blob/cassandra-3.0/build.xml#L62],
> it could speed up the test, especially on powerful servers. Currently, it's
> set to 1 by default. I would like to propose to set the {{test.runners}} by
> the [number of CPUs
> dynamically|http://www.iliachemodanov.ru/en/blog-en/15-tools/ant/48-get-number-of-processors-in-ant-en].
> For example, {{runners = num_cores / 4}}. What do you guys think?
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