[MESOS-4705] Linux 'perf' parsing logic may fail when OS distribution has perf backports.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.27.1
• Fix Version/s: 0.26.2, 0.27.3, 0.28.2, 1.0.0
• Component/s: containerization
• Assignee: Fan Du
• Reporter: Fan Du
• Shepherd: Benjamin Mahler
• Created: 18/Feb/16 09:04
• Updated: 06/Jul/18 21:27
• Resolved: 25/Apr/16 22:48

Description

When sampling container with perf event on Centos7 with kernel
3.10.0-123.el7.x86_64, slave complained with below error spew:

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

it's caused by the current perf format assumption 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.

Issue Links

• is duplicated by: MESOS-4655 PerfEventIsolatorTest.ROOT_CGROUPS_Sample failed in CentOS 7.1
• relates to: MESOS-7049 CgroupsAnyHierarchyWithPerfEventTest.ROOT_CGROUPS_PERF_PerfTest is broken on Fedora 25.
• relates to: MESOS-2834 Support different perf output formats