Github user jieyu commented on the issue:

    https://github.com/apache/mesos/pull/303
  
    Looks like on CentOS 7 (3.10.0-693.5.2.el7.x86_64). If kmem accounting is 
not enabled, the `memory.kmem.limit_in_bytes` will always show 0. And reading 
`memory.kmem.slabinfo` will give `Input/output error`
    
    I think we should probably add an agent flag to control the enabling of 
kmem accounting feature, and only report stats if kmem accounting is enabled.


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