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From "Rajesh Balamohan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-5551) Ignore deleted file mapping from memory computation when smaps is enabled
Date Fri, 23 Sep 2016 05:43:20 GMT

     [ https://issues.apache.org/jira/browse/YARN-5551?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rajesh Balamohan updated YARN-5551:
-----------------------------------
    Attachment: YARN-5551.branch-2.002.patch

Attaching .2 version which takes into account "anonymous".  

> Ignore deleted file mapping from memory computation when smaps is enabled
> -------------------------------------------------------------------------
>
>                 Key: YARN-5551
>                 URL: https://issues.apache.org/jira/browse/YARN-5551
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Rajesh Balamohan
>            Assignee: Rajesh Balamohan
>            Priority: Minor
>         Attachments: YARN-5551.branch-2.001.patch, YARN-5551.branch-2.002.patch
>
>
> Currently deleted file mappings are also included in the memory computation when SMAP
is enabled. For e.g
> {noformat}
> 7f612004a000-7f612004c000 rw-s 00000000 00:10 4201507513                 /dev/shm/HadoopShortCircuitShm_DFSClient_NONMAPREDUCE_-521969216_162_734673185
(deleted)
> Size:                  8 kB
> Rss:                   4 kB
> Pss:                   2 kB
> Shared_Clean:          0 kB
> Shared_Dirty:          4 kB
> Private_Clean:         0 kB
> Private_Dirty:         0 kB
> Referenced:            4 kB
> Anonymous:             0 kB
> AnonHugePages:         0 kB
> Swap:                  0 kB
> KernelPageSize:        4 kB
> MMUPageSize:           4 kB
> 7fbf28000000-7fbf68000000 rw-s 00000000 08:02 11927571                   /tmp/7298569189125604642/arena-1291157252088664681.cache
(deleted)
> Size:            1048576 kB
> Rss:               17288 kB
> Pss:               17288 kB
> Shared_Clean:          0 kB
> Shared_Dirty:          0 kB
> Private_Clean:       232 kB
> Private_Dirty:     17056 kB
> Referenced:        17288 kB
> Anonymous:             0 kB
> AnonHugePages:         0 kB
> Swap:                  0 kB
> KernelPageSize:        4 kB
> MMUPageSize:           4 kB
> {noformat}
> It would be good to exclude these from getSmapBasedRssMemorySize() computation.  



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