You are viewing a plain text version of this content. The canonical link for it is here.

Posted to common-dev@hadoop.apache.org by "Chris Nauroth (JIRA)" <ji...@apache.org> on 2015/02/13 21:37:12 UTC

[jira] [Resolved] (HADOOP-7832) Using mincore to understand the effect of fadvise in the Linux page cache

     [ https://issues.apache.org/jira/browse/HADOOP-7832?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chris Nauroth resolved HADOOP-7832.
-----------------------------------
    Resolution: Done
      Assignee: Cristina L. Abad

The attached patch does not apply to current trunk.  From reading the prior discussion, it sounds like the intent was to share the patch so that others could repeat the experiments, but there was not necessarily an intent to push it into the codebase permanently.  Based on that, I'm resolving this jira as Done.  Please feel free to reopen if needed.

> Using mincore to understand the effect of fadvise in the Linux page cache
> -------------------------------------------------------------------------
>
>                 Key: HADOOP-7832
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7832
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: io, native, performance
>            Reporter: Cristina L. Abad
>            Assignee: Cristina L. Abad
>            Priority: Minor
>         Attachments: hadoop-7714-20s-205-mincore.txt
>
>
> This Jira adds a way to log the percentage of pages of a file that were on the Linux page cache (when the file is being opened) with the purpose of measuring the effect of issuing posix_fadvise (POSIX_FADV_DONTNEED) calls.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)