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https://issues.apache.org/jira/browse/MESOS-4705?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15186716#comment-15186716
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Fan Du commented on MESOS-4705:
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Thanks for the head up!
I know this RR, the new API does not connected to perf event isolator so far,
and in addition current behavior requires run perf with specified duration as
well as interval, IMO, this means a gap for the new API.
btw, it would be great if there is an example or test code for the new API for
reference.
> 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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