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From "Naumova Natalya (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HARMONY-5285) [classlib][startup][performance] double reading of resources from jars
Date Thu, 20 Dec 2007 13:45:43 GMT

     [ https://issues.apache.org/jira/browse/HARMONY-5285?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Naumova Natalya  updated HARMONY-5285:
--------------------------------------

    Component/s: Classlib

> [classlib][startup][performance] double reading of resources from jars
> ----------------------------------------------------------------------
>
>                 Key: HARMONY-5285
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5285
>             Project: Harmony
>          Issue Type: Sub-task
>          Components: Classlib
>            Reporter: Naumova Natalya 
>
> The problem is in ZipEntry reading: some of JarEntry's are reading twice : resources
in jars for instance. Besides reading jar entries is not effective : it's reading via classlib
portlib, that uses systems calls always and there is no cashing of entries that were read
before.
> If one look to the file usage while jar loading he[she] see that the significant number
of reads happen from one offset (ecpesially for jars resources). 

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