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From "Scott Chen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-1167) Make ProcfsBasedProcessTree collect rss memory information
Date Fri, 06 Nov 2009 19:06:32 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12774374#action_12774374
] 

Scott Chen commented on MAPREDUCE-1167:
---------------------------------------

Thanks, Vinod.
1. I will find out what is the standard way to obtain PAGESIZE.
2. I will use bytes everywhere for rss. I agree it is more clear that way.
3. Throwing exception in getCumulativeRssMem() is also a good suggestion. I will follow this
one as well.

> Make ProcfsBasedProcessTree collect rss memory information
> ----------------------------------------------------------
>
>                 Key: MAPREDUCE-1167
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1167
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>          Components: tasktracker
>    Affects Versions: 0.20.1
>            Reporter: Scott Chen
>         Attachments: MAPREDUCE-1167-v2.patch, MAPREDUCE-1167.patch
>
>
> Right now ProcfsBasedProcess collects only virtual memory. We can make it collect rss
memory as well.
> Later we can use rss in TaskMemoryManagerThread to obtain better memory management.

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