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https://issues.apache.org/jira/browse/MESOS-4705?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15233098#comment-15233098
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Benjamin Mahler commented on MESOS-4705:
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[[email protected]] thanks for investigating the kernel code and clarifying.
[~fan.du] [[email protected]] This is the kind of information I'd like to see
in the code so that our methodology is clear to the reader. If you'd like to
remove kernel version checking as a part of this, that's fine as well so long
as the explanation is clear and correct.
> Slave failed to sample container with perf event
> ------------------------------------------------
>
> Key: MESOS-4705
> URL: https://issues.apache.org/jira/browse/MESOS-4705
> Project: Mesos
> Issue Type: Bug
> Components: cgroups, isolation
> Affects Versions: 0.27.1
> Reporter: Fan Du
> Assignee: Fan Du
>
> When sampling container with perf event on Centos7 with kernel
> 3.10.0-123.el7.x86_64, slave complained with below error spew:
> {code}
> E0218 16:32:00.591181 8376 perf_event.cpp:408] Failed to get perf sample:
> Failed to parse perf sample: Failed to parse perf sample line
> '25871993253,,cycles,mesos/5f23ffca-87ed-4ff6-84f2-6ec3d4098ab8,10059827422,100.00':
> Unexpected number of fields
> {code}
> it's caused by the current perf format [assumption |
> https://git-wip-us.apache.org/repos/asf?p=mesos.git;a=blob;f=src/linux/perf.cpp;h=1c113a2b3f57877e132bbd65e01fb2f045132128;hb=HEAD#l430]
> with kernel version below 3.12
> On 3.10.0-123.el7.x86_64 kernel, the format is with 6 tokens as below:
> value,unit,event,cgroup,running,ratio
> A local modification fixed this error on my test bed, please review this
> ticket.
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