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https://issues.apache.org/jira/browse/MESOS-5075?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15221526#comment-15221526
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haosdent edited comment on MESOS-5075 at 6/19/16 10:54 AM:
-----------------------------------------------------------
Patch: https://reviews.apache.org/r/43284/
| Wait for process:reap in CGROUPS_ROOT_PerfRollForward. |
https://reviews.apache.org/r/46300/ |
| Wait for process:reap in PerfEventIsolatorTest.ROOT_CGROUPS_Sample. |
https://reviews.apache.org/r/43284/ |
was (Author: haosd...@gmail.com):
Patch: https://reviews.apache.org/r/43284/
> Remain processes when running perf event related test cases
> -----------------------------------------------------------
>
> Key: MESOS-5075
> URL: https://issues.apache.org/jira/browse/MESOS-5075
> Project: Mesos
> Issue Type: Bug
> Reporter: haosdent
> Assignee: haosdent
> Labels: isolation, perf
>
> Currently when running single perf event related test cases, I always saw
> {code}
> [----------] Global test environment tear-down
> ../../src/tests/environment.cpp:790: Failure
> Failed
> Tests completed with child processes remaining:
> -+- 22886 /home/haosdent/mesos/build/src/.libs/mesos-tests
> --gtest_filter=CgroupsIsolatorTest.ROOT_CGROUPS_PerfEventSubsystemSample
> --verbose
> \-+- 22963 /home/haosdent/mesos/build/src/.libs/mesos-tests
> --gtest_filter=CgroupsIsolatorTest.ROOT_CGROUPS_PerfEventSubsystemSample
> --verbose
> \-+- 22965 perf stat --all-cpus --field-separator , --log-fd 1 --event
> cycles --cgroup mesos/5f02f820-cc63-471b-98b9-37bbc4fde674 --event task-clock
> --cgroup mesos/5f02f820-cc63-471b-98b9-37bbc4fde674 -- sleep 0.25
> \--- 22966 sleep 0.25
> [==========] 1 test from 1 test case ran. (3165 ms total)
> {code}
> In {{PerfEventIsolatorTest.ROOT_CGROUPS_Sample}}, we add a sleep.
> {code}
> sleep(2);
> {code}
> This could avoid the remain processes in most cases, but a better approach is
> to discard and kill perf sample process before exit.
> As discussion in [r43284 | https://reviews.apache.org/r/43284/], discard
> did't work as well except waiting for process exit. So need to investigate
> why discard didn't work and fix it.
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