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https://issues.apache.org/jira/browse/MESOS-3082?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15089443#comment-15089443
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Jan Schlicht edited comment on MESOS-3082 at 1/8/16 4:26 PM:
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Tests trying to sample using perf with the 'cycles' value can cause failures of
other tests if run in a virtual machine that does not support _CPU performance
counters_. E.g. running {{sudo ./bin/mesos-tests.sh
--gtest_filter="\*ROOT_CGROUPS_Sample"}} will fail and sometimes keep a child
process running. This process will block some cgroups from being removed. This
affects all test processes that are run afterwards that try to clean up some
cgroups before being run (mostly {{ROOT_CGROUPS_*}}).
I'd suggest to disable these tests if in a virtual machine without _CPU
performance counters_.
was (Author: nfnt):
Tests trying to sample using perf with the 'cycles' value can cause failures of
other tests if run in a virtual machine that does not support _CPU performance
counters_. E.g. running {{sudo ./bin/mesos-tests.sh
--gtest_filter="\*ROOT_CGROUPS_Sample"}} will fail and sometimes keep a child
process running. This process will block some cgroups from being removed. This
affects all test processes that are run afterwards that try to clean up some
cgroups before being run (mostly {{ROOT_CGROUPS_*}}).
I'd suggest to disable these test if in a virtual machine without _CPU
performance counters_.
> Perf related tests rely on 'cycles' which might not always be present.
> ----------------------------------------------------------------------
>
> Key: MESOS-3082
> URL: https://issues.apache.org/jira/browse/MESOS-3082
> Project: Mesos
> Issue Type: Bug
> Environment: Ubuntu 14.04 (in a virtual machine)
> Reporter: Benjamin Hindman
> Assignee: Jan Schlicht
> Labels: mesosphere
>
> When running the tests on Ubuntu 14.04 the 'cycles' value collected by perf
> is always 0, meaning certain tests always fail. These lines in the test have
> been commented out for now and a TODO has been attached which links to this
> JIRA issue, since the solution is unclear. In particular, 'cycles' might not
> properly be counted because it is a hardware counter and this particular
> machine was a virtual machine. Either way, we should determine the best
> events to collect from perf in either VM or physical settings.
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