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From "Aleksey Shipilev (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HARMONY-5931) [classlib][pack200][performance] Some ClassConstantPool content may not be needed
Date Mon, 04 Aug 2008 15:02:47 GMT

     [ https://issues.apache.org/jira/browse/HARMONY-5931?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aleksey Shipilev updated HARMONY-5931:
--------------------------------------

    Attachment: pack200-ccp-profiler.patch

pack200-ccp-profiler.patch
The profiler.

On 5x7 JDT unpacking scenario the output is following:
====================================================
16690694 org.apache.harmony.unpack200.bytecode.ByteCode
12761804 org.apache.harmony.unpack200.bytecode.CPUTF8
3568564 org.apache.harmony.unpack200.bytecode.CPNameAndType
2565464 org.apache.harmony.unpack200.bytecode.CPMethodRef
1932419 org.apache.harmony.unpack200.bytecode.CPClass
1075584 org.apache.harmony.unpack200.bytecode.CPMethod
1049894 org.apache.harmony.unpack200.bytecode.CodeAttribute
1049894 org.apache.harmony.unpack200.bytecode.LineNumberTableAttribute
1049894 org.apache.harmony.unpack200.bytecode.LocalVariableTableAttribute
706964 org.apache.harmony.unpack200.bytecode.CPFieldRef
692859 org.apache.harmony.unpack200.bytecode.CPField
674274 org.apache.harmony.unpack200.bytecode.CPInterfaceMethodRef
348319 org.apache.harmony.unpack200.bytecode.CPString
143569 org.apache.harmony.unpack200.bytecode.SourceFileAttribute
115534 org.apache.harmony.unpack200.bytecode.ConstantValueAttribute
100904 org.apache.harmony.unpack200.bytecode.InnerClassesAttribute
77734 org.apache.harmony.unpack200.bytecode.NewAttribute
40844 org.apache.harmony.unpack200.bytecode.ExceptionsAttribute
38499 org.apache.harmony.unpack200.bytecode.CPInteger
19109 org.apache.harmony.unpack200.bytecode.CPLong
7279 org.apache.harmony.unpack200.bytecode.DeprecatedAttribute
769 org.apache.harmony.unpack200.bytecode.CPDouble
629 org.apache.harmony.unpack200.bytecode.CPFloat

> [classlib][pack200][performance] Some ClassConstantPool content may not be needed
> ---------------------------------------------------------------------------------
>
>                 Key: HARMONY-5931
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5931
>             Project: Harmony
>          Issue Type: Improvement
>         Environment: Latest pack200
>            Reporter: Aleksey Shipilev
>         Attachments: pack200-ccp-profiler.patch
>
>
> ClassConstantPool is one peformance-important component of pack200. This issue reviews
the data patterns in ClassConstantPool.

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