[jira] Updated: (CHUKWA-447) Load increased by 50% when using ExecAdaptor instead of org.apache.hadoop.chukwa.inputtools.plugin.metrics.Exec+FileTailingAdaptor

["Ari Rabkin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CHUKWA-447?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ari Rabkin updated CHUKWA-447:
------------------------------

    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

I just committed this.

Not sure this entirely will resolve issue; I had thought most of the time the ExecAdaptor is blocked waiting on the underlying process, but that may depend which processes are being invoked.  Certainly the fix is worthwhile regardless.

> Load increased by 50% when using ExecAdaptor instead of org.apache.hadoop.chukwa.inputtools.plugin.metrics.Exec+FileTailingAdaptor
> ----------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: CHUKWA-447
>                 URL: https://issues.apache.org/jira/browse/CHUKWA-447
>             Project: Chukwa
>          Issue Type: Improvement
>          Components: input tools
>    Affects Versions: 0.3.0, 0.4.0
>         Environment: Redhat EL 5.1, Java 6
>            Reporter: Eric Yang
>            Assignee: Eric Yang
>             Fix For: 0.5.0
>
>         Attachments: CHUKWA-447.patch, Picture 4.png
>
>
> While I am coming up a fix for CHUKWA-446, I notice the load average increased by ExecAdaptor.  There is probably something that could be improved to reduce the cost of ExecAdaptor.

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