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

Posted to issues@commons.apache.org by "Liyin Liang (JIRA)" <ji...@apache.org> on 2012/06/01 07:31:25 UTC

[jira] [Updated] (IO-332) Improve tailer's reading performance

     [ https://issues.apache.org/jira/browse/IO-332?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Liyin Liang updated IO-332:
---------------------------

    Attachment: IO-332-1.diff

Attach a diff file. This diff re-writes the Tailer.readLines() method. With this diff, the reading performance can improve 100X.
                
> Improve tailer's reading performance
> ------------------------------------
>
>                 Key: IO-332
>                 URL: https://issues.apache.org/jira/browse/IO-332
>             Project: Commons IO
>          Issue Type: Improvement
>            Reporter: Liyin Liang
>         Attachments: IO-332-1.diff
>
>
> Now, Tailer triggers a lot of calls to the underlying runtime system, that is, RandomAccessFile.read(), a native method that returns the next byte of the file. This approach is too slow to meet our need. The performance can be improved by using a large buffer, that is using RandomAccessFile.read(byte[]). Then Tailer only rarely accesses the underlying system.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira