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https://jira.codehaus.org/browse/SUREFIRE-947?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kristian Rosenvold updated SUREFIRE-947:
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      Description: I am running on a multicore machine with 
{{forkMode="perthread"}} + {{threadCount="1"}} + {{reuseForks="true"}} and not 
seeing any parallelism—at least {{jps -lm}} reports only one 
{{surefirebooter.jar}} process. {{perCoreThreadCount}} defaults to {{true}} so 
I expected to see 4 (or 8?) processes. Seems that I have to explicitly specify 
a larger {{threadCount}} in order to get actual parallelism.  (was: I am 
running on a multicore machine with {{forkMode="perthread"}} + 
{{threadCount="1"}} + {{reuseForks="true"}} and not seeing any parallelism—at 
least {{jps -lm}} reports only one {{surefirebooter.jar}} process. 
{{perCoreThreadCount}} defaults to {{true}} so I expected to see 4 (or 8?) 
processes. Seems that I have to explicitly specify a larger {{threadCount}} in 
order to get actual parallelism.)
      Environment: 32-bit Linux 3.2.0 kernel (Ubuntu Precise), Java 7u9, 
i5-2520M CPU × 4  (was: 32-bit Linux 3.2.0 kernel (Ubuntu Precise), Java 
7u9, i5-2520M CPU × 4)
    Fix Version/s: 2.14
    
> perCoreThreadCount ineffective
> ------------------------------
>
>                 Key: SUREFIRE-947
>                 URL: https://jira.codehaus.org/browse/SUREFIRE-947
>             Project: Maven Surefire
>          Issue Type: Bug
>          Components: Junit 4.7+ (parallel) support
>    Affects Versions: 2.13
>         Environment: 32-bit Linux 3.2.0 kernel (Ubuntu Precise), Java 7u9, 
> i5-2520M CPU × 4
>            Reporter: Jesse Glick
>             Fix For: 2.14
>
>
> I am running on a multicore machine with {{forkMode="perthread"}} + 
> {{threadCount="1"}} + {{reuseForks="true"}} and not seeing any 
> parallelism—at least {{jps -lm}} reports only one 
> {{surefirebooter.jar}} process. {{perCoreThreadCount}} defaults to {{true}} 
> so I expected to see 4 (or 8?) processes. Seems that I have to explicitly 
> specify a larger {{threadCount}} in order to get actual parallelism.

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