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From "aaron pieper (JIRA)" <j...@apache.org>
Subject [jira] Updated: (CXF-2544) Performance degradation in attachment logic in CXF 2.2.4
Date Mon, 16 Nov 2009 23:29:39 GMT

     [ https://issues.apache.org/jira/browse/CXF-2544?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

aaron pieper updated CXF-2544:
------------------------------

    Attachment: CxfBug1.java

This is a test case which demonstrates the performance degradation. It needs apache commons-io.jar
on the classpath, for IOUtils.copy(). File.

Executing this test case results in the following output, in CXF v2.2.4:
8,193.82 kb file created: C:\DOCUME~1\piepera\LOCALS~1\Temp\cxf.CxfBug18256
9.75 seconds
Done.

CXF 2.2.2 produces the following output:
8,193.82 kb file created: C:\DOCUME~1\piepera\LOCALS~1\Temp\cxf.CxfBug19656
1.078 seconds
Done.

> Performance degradation in attachment logic in CXF 2.2.4
> --------------------------------------------------------
>
>                 Key: CXF-2544
>                 URL: https://issues.apache.org/jira/browse/CXF-2544
>             Project: CXF
>          Issue Type: Bug
>    Affects Versions: 2.2.4
>            Reporter: aaron pieper
>         Attachments: CxfBug1.java
>
>
> AttachmentDeserializer attaches a DelegatingInputStream to the message, which contains
the attachment body. The performance of this InputStream has been significantly degraded from
CXF 2.2.2 to CXF 2.2.4. For example, a 55 megabyte file used to take around three seconds
to parse - now it takes over one minute.
> I've attached a performance test which demonstrates the issue, using an 8 megabyte file.
In CXF v2.2.2, this test takes a fraction of a second to run. In CXF v2.2.4, this test takes
about 10 seconds on my machine.
> I tried to track down the cause of the degradation. AttachmentDeserializer  line 206
calls "new InternetHeaders(stream)" which takes a long time to complete. Since CXF v2.2.2
and CXF v2.2.4 use the same version of this InternetHeaders class, I believe it must be a
change in the way the stream is being put together.

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