[jira] [Commented] (MESOS-2534) PerfTest.ROOT_SampleInit test fails.

["Ian Downes (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MESOS-2534?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14376980#comment-14376980 ] 

Ian Downes commented on MESOS-2534:
-----------------------------------

https://reviews.apache.org/r/32420/

> PerfTest.ROOT_SampleInit test fails.
> ------------------------------------
>
>                 Key: MESOS-2534
>                 URL: https://issues.apache.org/jira/browse/MESOS-2534
>             Project: Mesos
>          Issue Type: Bug
>          Components: test
>    Affects Versions: 0.22.0
>            Reporter: Benjamin Mahler
>            Assignee: Ian Downes
>              Labels: twitter
>
> From MESOS-2300 as well, it looks like this test is not reliable:
> {code}
> [ RUN      ] PerfTest.ROOT_SampleInit
> ../../src/tests/perf_tests.cpp:147: Failure
> Expected: (0u) < (statistics.get().cycles()), actual: 0 vs 0
> ../../src/tests/perf_tests.cpp:150: Failure
> Expected: (0.0) < (statistics.get().task_clock()),
> {code}
> It looks like this test samples PID 1, which is either {{init}} or {{systemd}}. Per a chat with [~idownes] this should probably sample something that is guaranteed to be consuming cycles.



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